Phosphane sulfide/octacarbonyldicobalt-catalyzed Pauson - Khand reaction under an atmospheric pressure of carbon monoxide

Angewandte Chemie - International Edition

Volumn 39, Issue 3, 2000, Pages 631-633

  Hayashi, Minoru ^a   Hashimoto, Yukihiko ^a   Yamamoto, Yoji ^a   Usuki, Junji ^a   Saigo, Kazuhiko ^a  

^a UNIVERSITY OF TOKYO   (Japan)

Author keywords

Cobalt; Cycloadditions; Homogeneous catalysis; Pauson Khand reactions; S ligands

Indexed keywords

CARBON MONOXIDE; COBALT DERIVATIVE; CYCLOPENTENONE DERIVATIVE; ORGANOPHOSPHORUS COMPOUND;

ARTICLE; CATALYSIS; CHEMICAL REACTION; CHEMICAL STRUCTURE; REACTION ANALYSIS; SYNTHESIS;

EID: 0034603010     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1521-3773(20000204)39:3<631::AID-ANIE631>3.0.CO;2-B     Document Type: Article

References (35)

1. Recent reviews: a) N. E. Schore, Chem. Rev. 1988, 88, 1081-1119; b) N. E. Schore, Org. React. 1991, 40, 1-90; c) N. E. Schore in Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1037-1064; d) N. E. Schore in Comprehensive Organometallic Chemistry 11, Vol. 12 (Ed.: L. S. Hegedus), Pergamon, Oxford, 1995, pp. 703-739; e) O. Geis, H. G. Schmalz, Angew. Chem. 1998, 110, 955-958; Angew. Chem. Int. Ed. 1998, 37, 911-914; f) N. Jeong in Transition Metals in Organic Synthesis, Vol. 1 (Eds.: M. Beller, C. Bolm), Wiley-VCH, Weinheim, 1998, pp. 560-577.
2. Recent reviews: a) N. E. Schore, Chem. Rev. 1988, 88, 1081-1119; b) N. E. Schore, Org. React. 1991, 40, 1-90; c) N. E. Schore in Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1037-1064; d) N. E. Schore in Comprehensive Organometallic Chemistry 11, Vol. 12 (Ed.: L. S. Hegedus), Pergamon, Oxford, 1995, pp. 703-739; e) O. Geis, H. G. Schmalz, Angew. Chem. 1998, 110, 955-958; Angew. Chem. Int. Ed. 1998, 37, 911-914; f) N. Jeong in Transition Metals in Organic Synthesis, Vol. 1 (Eds.: M. Beller, C. Bolm), Wiley-VCH, Weinheim, 1998, pp. 560-577.
3. Recent reviews: a) N. E. Schore, Chem. Rev. 1988, 88, 1081-1119; b) N. E. Schore, Org. React. 1991, 40, 1-90; c) N. E. Schore in Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1037-1064; d) N. E. Schore in Comprehensive Organometallic Chemistry 11, Vol. 12 (Ed.: L. S. Hegedus), Pergamon, Oxford, 1995, pp. 703-739; e) O. Geis, H. G. Schmalz, Angew. Chem. 1998, 110, 955-958; Angew. Chem. Int. Ed. 1998, 37, 911-914; f) N. Jeong in Transition Metals in Organic Synthesis, Vol. 1 (Eds.: M. Beller, C. Bolm), Wiley-VCH, Weinheim, 1998, pp. 560-577.
4. Recent reviews: a) N. E. Schore, Chem. Rev. 1988, 88, 1081-1119; b) N. E. Schore, Org. React. 1991, 40, 1-90; c) N. E. Schore in Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1037-1064; d) N. E. Schore in Comprehensive Organometallic Chemistry 11, Vol. 12 (Ed.: L. S. Hegedus), Pergamon, Oxford, 1995, pp. 703-739; e) O. Geis, H. G. Schmalz, Angew. Chem. 1998, 110, 955-958; Angew. Chem. Int. Ed. 1998, 37, 911-914; f) N. Jeong in Transition Metals in Organic Synthesis, Vol. 1 (Eds.: M. Beller, C. Bolm), Wiley-VCH, Weinheim, 1998, pp. 560-577.
5. Recent reviews: a) N. E. Schore, Chem. Rev. 1988, 88, 1081-1119; b) N. E. Schore, Org. React. 1991, 40, 1-90; c) N. E. Schore in Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1037-1064; d) N. E. Schore in Comprehensive Organometallic Chemistry 11, Vol. 12 (Ed.: L. S. Hegedus), Pergamon, Oxford, 1995, pp. 703-739; e) O. Geis, H. G. Schmalz, Angew. Chem. 1998, 110, 955-958; Angew. Chem. Int. Ed. 1998, 37, 911-914; f) N. Jeong in Transition Metals in Organic Synthesis, Vol. 1 (Eds.: M. Beller, C. Bolm), Wiley-VCH, Weinheim, 1998, pp. 560-577.
6. Recent reviews: a) N. E. Schore, Chem. Rev. 1988, 88, 1081-1119; b) N. E. Schore, Org. React. 1991, 40, 1-90; c) N. E. Schore in Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1037-1064; d) N. E. Schore in Comprehensive Organometallic Chemistry 11, Vol. 12 (Ed.: L. S. Hegedus), Pergamon, Oxford, 1995, pp. 703-739; e) O. Geis, H. G. Schmalz, Angew. Chem. 1998, 110, 955-958; Angew. Chem. Int. Ed. 1998, 37, 911-914; f) N. Jeong in Transition Metals in Organic Synthesis, Vol. 1 (Eds.: M. Beller, C. Bolm), Wiley-VCH, Weinheim, 1998, pp. 560-577.
7. Recent reviews: a) N. E. Schore, Chem. Rev. 1988, 88, 1081-1119; b) N. E. Schore, Org. React. 1991, 40, 1-90; c) N. E. Schore in Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1037-1064; d) N. E. Schore in Comprehensive Organometallic Chemistry 11, Vol. 12 (Ed.: L. S. Hegedus), Pergamon, Oxford, 1995, pp. 703-739; e) O. Geis, H. G. Schmalz, Angew. Chem. 1998, 110, 955-958; Angew. Chem. Int. Ed. 1998, 37, 911-914; f) N. Jeong in Transition Metals in Organic Synthesis, Vol. 1 (Eds.: M. Beller, C. Bolm), Wiley-VCH, Weinheim, 1998, pp. 560-577.
8. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
9. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
10. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
11. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
12. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
13. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
14. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
15. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
16. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
17. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
18. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
19. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
20. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
21. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
22. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
23. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
24. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
25. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187-6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
26. For Co-catalyzed reactions, see: a) V. Rautenstrauch, P. Mégard, José Conesa, W. Küster, Angew. Chem. 1990, 102, 1441-1443; Angew. Chem. Int. Ed. Engl. 1990, 29, 1413-1416; b) N. Jeong, S. H. Hwang, Y. Lee, J. Am. Chem. Soc. 1994, 116, 3159-3160; c) B. Y. Lee, Y. K. Chung, J. Am. Chem. Soc. 1994, 116, 8793-8794; d) N. Y. Lee, Y. K. Chung, Tetrahedron Lett. 1996, 37, 3145-3148; e) B. L. Pagenkopf, T. Livinghouse, J. Am. Chem. Soc. 1996, 118, 2285-2286; f) N. Jeong, S. H. Hwang, Y. W. Lee, J. S. Lim, J. Am. Chem. Soc. 1997, 119, 10549-10550; g) T. Sugihara, M. Yamaguchi, J. Am. Chem. Soc. 1998, 120, 10782 10783; h) T. Sugihara, M. Yamaguchi, Synlett 1998, 1384-1386; i) O. B. Belanger, D. J. R. O'Mahony, T. Livinghouse, Tetrahedron Lett. 1998, 39, 7637-7640; j) D. H. Belanger, T. Livinghouse. Tetrahedron Lett. 1998, 39, 7641-7644; k) J. W. Kim, Y. K. Chung. Synthesis 1998, 142-144. For Ti-catalyzed reactions, see: l) F. A. Hicks, N.M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1996, 118, 9450 9451; m) K A. Hicks, S. L. Buchawald, J. Am. Chem. Soc. 1996, 118, 11 688- 11 689; n) S. C. Berk, R. B. Grossman, S. L. Buchwald, J. Am. Chem. Soc. 1993, 115, 4912-4913. For Rh-catalyzed reactions, see; o) Y. Koga, T. Kobayashi, K. Narasaka, Chem. Lett. 1998, 249-250; p) N. Jeong, S. Lee, B. K. Sung, Organometallics 1998, 17, 3642-3644. For Ru-catalyzed reactions, see: q) T. Kondo, N. Suzuki, T. Okada, T. Mitsudo, J. Am. Chem. Soc. 1997, 119, 6187- 6188; r) T. Morimoto, N. Chatani, Y. Fukumoto, S. Murai, J. Org. Chem. 1997, 62, 3762-3765.
27. For a detailed comparison of various Pauson-Khand-type reactions, see F. A. Hicks, N. M. Kablaoui, S. L. Buchwald, J. Am. Chem. Soc. 1999, 121, 5881-5898.
28. M. Hayashi, H. Takezaki, Y. Hashimoto, K. Takaoki, K. Saigo, Tetrahedron Lett. 1998, 39, 7529-7532.
29. D. C. Billington, I. M. Helps, P. L. Pauson, W. Thomson, D. Willison, J. Organomet. Chem. 1988, 354, 233-242.
30. We used commercially available octacarhonyldicobalt (Fluka and Kanto Chemicals) without further purification. Both products gave comparable results; in many cases the difference in yield was less than 2%.
31. A similar equilibrium was proposed to account for the acceleration arising from an internal sulfur ligand in an intramolecular Pauson-Khand reaction: M. E. Krafft, I. L. Scott, R. H. Romero, Tetrahedron Lett. 1992, 33, 3829-3832.
32. Cobalt-calalyzed Pauson-Khand reactions are usually performed in DME; see refs. [2b-c, 2h-j].
33. In the case of entry 5, reaction with a catalyst to additive ratio of 1:4 gave a better result than with a ratio of 1:6, but the reason for this is unclear.
34. T. Sugihara, M. Yamada, H. Ban, M. Yamaguchi, C. Kaneko, Angew. Chem. 1997, 109, 2884-2886; Angew. Chem. Int. Ed. Engl. 1997, 36, 2801-2804.
35. T. Sugihara, M. Yamada, H. Ban, M. Yamaguchi, C. Kaneko, Angew. Chem. 1997, 109, 2884-2886; Angew. Chem. Int. Ed. Engl. 1997, 36, 2801-2804.