Highly enantioselective allylation of aldehydes catalyzed by indium(III) - PYBOX complex

Organic Letters

Volumn 7, Issue 1, 2005, Pages 159-161

  Lu, Jun ^a,b   Ji, Shun Jun ^b   Teo, Yong Chua ^a   Loh, Teck Peng ^a,b  

^a NATIONAL UNIVERSITY OF SINGAPORE   (Singapore)

^b SOOCHOW UNIVERSITY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

ALDEHYDE; ALDEHYDE DERIVATIVE; AROMATIC CARBOXYLIC ACID; INDIUM 111; ALLYL COMPOUND; INDIUM; INDIUM(III) PYBOX; INDIUM(III)-PYBOX; ORGANOMETALLIC COMPOUND; OXAZOLE DERIVATIVE; PYRIDINE DERIVATIVE;

ALLYLATION; ARTICLE; CATALYSIS; CHIRALITY; ENANTIOSELECTIVITY; CHEMISTRY; STEREOISOMERISM;

ALDEHYDES; ALLYL COMPOUNDS; CATALYSIS; INDIUM; ORGANOMETALLIC COMPOUNDS; OXAZOLES; PYRIDINES; STEREOISOMERISM;

EID: 12344274699     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol047711c     Document Type: Article

References (35)

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9. For some examples see: (b) Keck, G. E.; Tarbet, K. H.; Geraci, L. S. J. Am. Chem. Soc. 1993, 115, 8467. (c) Cosata, A. L.; Piazza, M. G.; Tagliavini, E.; Trombini, C.; Ronchi, A. U. J. Am. Chem. Soc. 1993, 115, 7001. (d) Yanagisawa, A.; Nakashima, H.; Ishiba, A.; Yamamoto, H. J. Am. Chem. Soc. 1996, 118, 4723. (e) Yanagisawa, A.; Ishiba, A.; Nakashima, H.; Yamamoto, H. Synlett 1996, 88. (f) Yanagisawa, A.; Nakashima, H.; Nakatsuka, Y.; Ishiba, A.; Yamamoto, H. Bull. Chem. Soc. Jpn. 2001, 74, 1129. (g) Hanawa, H.; Hashimoto, T.; Maruoka, K. J. Am. Chem. Soc. 2003, 125, 1708. (h) Cozzi, P. G.; Orioli, P.; Tagliavini, E.; Umani-Ronchi, A. Tetrahedron Lett. 1997, 38, 145. (i) Loh, T.-P. In Science of Synthesis; Yamamoto, H., Ed.; Georg Thieme Verlag Stuttgart: New York, 2004; p 413.
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11. For some examples see: (b) Keck, G. E.; Tarbet, K. H.; Geraci, L. S. J. Am. Chem. Soc. 1993, 115, 8467. (c) Cosata, A. L.; Piazza, M. G.; Tagliavini, E.; Trombini, C.; Ronchi, A. U. J. Am. Chem. Soc. 1993, 115, 7001. (d) Yanagisawa, A.; Nakashima, H.; Ishiba, A.; Yamamoto, H. J. Am. Chem. Soc. 1996, 118, 4723. (e) Yanagisawa, A.; Ishiba, A.; Nakashima, H.; Yamamoto, H. Synlett 1996, 88. (f) Yanagisawa, A.; Nakashima, H.; Nakatsuka, Y.; Ishiba, A.; Yamamoto, H. Bull. Chem. Soc. Jpn. 2001, 74, 1129. (g) Hanawa, H.; Hashimoto, T.; Maruoka, K. J. Am. Chem. Soc. 2003, 125, 1708. (h) Cozzi, P. G.; Orioli, P.; Tagliavini, E.; Umani-Ronchi, A. Tetrahedron Lett. 1997, 38, 145. (i) Loh, T.-P. In Science of Synthesis; Yamamoto, H., Ed.; Georg Thieme Verlag Stuttgart: New York, 2004; p 413.
12. For some examples see: (b) Keck, G. E.; Tarbet, K. H.; Geraci, L. S. J. Am. Chem. Soc. 1993, 115, 8467. (c) Cosata, A. L.; Piazza, M. G.; Tagliavini, E.; Trombini, C.; Ronchi, A. U. J. Am. Chem. Soc. 1993, 115, 7001. (d) Yanagisawa, A.; Nakashima, H.; Ishiba, A.; Yamamoto, H. J. Am. Chem. Soc. 1996, 118, 4723. (e) Yanagisawa, A.; Ishiba, A.; Nakashima, H.; Yamamoto, H. Synlett 1996, 88. (f) Yanagisawa, A.; Nakashima, H.; Nakatsuka, Y.; Ishiba, A.; Yamamoto, H. Bull. Chem. Soc. Jpn. 2001, 74, 1129. (g) Hanawa, H.; Hashimoto, T.; Maruoka, K. J. Am. Chem. Soc. 2003, 125, 1708. (h) Cozzi, P. G.; Orioli, P.; Tagliavini, E.; Umani-Ronchi, A. Tetrahedron Lett. 1997, 38, 145. (i) Loh, T.-P. In Science of Synthesis; Yamamoto, H., Ed.; Georg Thieme Verlag Stuttgart: New York, 2004; p 413.
13. For some examples see: (b) Keck, G. E.; Tarbet, K. H.; Geraci, L. S. J. Am. Chem. Soc. 1993, 115, 8467. (c) Cosata, A. L.; Piazza, M. G.; Tagliavini, E.; Trombini, C.; Ronchi, A. U. J. Am. Chem. Soc. 1993, 115, 7001. (d) Yanagisawa, A.; Nakashima, H.; Ishiba, A.; Yamamoto, H. J. Am. Chem. Soc. 1996, 118, 4723. (e) Yanagisawa, A.; Ishiba, A.; Nakashima, H.; Yamamoto, H. Synlett 1996, 88. (f) Yanagisawa, A.; Nakashima, H.; Nakatsuka, Y.; Ishiba, A.; Yamamoto, H. Bull. Chem. Soc. Jpn. 2001, 74, 1129. (g) Hanawa, H.; Hashimoto, T.; Maruoka, K. J. Am. Chem. Soc. 2003, 125, 1708. (h) Cozzi, P. G.; Orioli, P.; Tagliavini, E.; Umani-Ronchi, A. Tetrahedron Lett. 1997, 38, 145. (i) Loh, T.-P. In Science of Synthesis; Yamamoto, H., Ed.; Georg Thieme Verlag Stuttgart: New York, 2004; p 413.
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16. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
17. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
18. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
19. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
20. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
21. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
22. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
23. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
24. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
25. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
26. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
27. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
28. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
29. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
30. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
31. For recent examples, see: (c) Mukaiyama, T.; Ohno, T.; Nishimura, T.; Han, J. S.; Kobayashi, S. Chem. Lett. 1990, 2239. (d) Trost, B. M.; Sharma, S.; Schmidt, T. J. Am. Chem. Soc. 1992, 114, 7903. (e) Loh, T.-P.; Pei, J.; Cao, G.-Q. J. Chem. Soc., Chem. Commun. 1996, 1819. (f) Loh, T.-P.; Pei, J.; Lin, M. J. Chem. Soc., Chem, Commun. 1996, 2315. (g) Loh, T.-P.; Chua, G.-L.; Vittal, J. J.; Wong, M.-W. J. Chem. Soc., Chem. Commun. 1998, 861. (h) Loh, T.-P.; Wei, L.-L. Tetrahedron Lett. 1998, 39, 323. (i) Loh, T.-P.; Huang, J.-M.; Goh, S.-H.; Vittal, J. J. Org. Lett. 2000, 2, 1291. (j) Yang, J.; Li, C.-J. Synlett 1999, 717. (k) Viswanathan, G.-S.; Yang, J.; Li, C.-J. Org. Lett. 1999, 1, 993. (l) Ranu, B. C.; Jana, U. J. Org. Chem. 1998, 63, 8212. (m) Ranu, B. C.; Hajra, A.; Jana, U. J. Org. Chem. 2000, 65, 6270. (n) Ali, T.; Chauhan, K. K.; Frost, C. G. Tetrahedron Lett. 1999, 40, 5621. (o) Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett 1999, 1743. (p) Tsuchimoto, T.; Maeda, T.; Shirakawa, E.; Kawakami, Y. J. Chem. Soc., Chem. Commun. 2000, 1573. (q) Gadhwal, S.; Sandhu, J. S. J. Chem. Soc., Perkin Trans. 1 2000, 2827. (r) Zhu, C.-J.; Yuan, F.; Gu, W.-J.; Pan, Y. J. Chem. Soc., Chem. Commun. 2003, 692.
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