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For an early example of a highly selective catalyzed reaction, see: (a) Cram. D. J.; Sogah, G. D. Y. J. Chem. Soc., Chem. Commun. 1981, 625-628. For a recent example of a highly selective Mukaiyama Michael reaction, see: (b) Evans, D. A.; Rovis, T.; Kozlowski, M. C.; Tedrow, J. S. J. Am. Chem. Soc. 1999, 121, 1994-1995. For a review of catalyzed conjugate addition reactions, see: (c) Ferigna, B. I.; de Vries, A. H. M. Advances in Catalytic Processes; JAI Press: London, 1995; pp 151-192.
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For an early example of a highly selective catalyzed reaction, see: (a) Cram. D. J.; Sogah, G. D. Y. J. Chem. Soc., Chem. Commun. 1981, 625- 628. For a recent example of a highly selective Mukaiyama Michael reaction, see: (b) Evans, D. A.; Rovis, T.; Kozlowski, M. C.; Tedrow, J. S. J. Am. Chem. Soc. 1999, 121, 1994-1995. For a review of catalyzed conjugate addition reactions, see: (c) Ferigna, B. I.; de Vries, A. H. M. Advances in Catalytic Processes; JAI Press: London, 1995; pp 151-192.
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JAI Press: London
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For an early example of a highly selective catalyzed reaction, see: (a) Cram. D. J.; Sogah, G. D. Y. J. Chem. Soc., Chem. Commun. 1981, 625- 628. For a recent example of a highly selective Mukaiyama Michael reaction, see: (b) Evans, D. A.; Rovis, T.; Kozlowski, M. C.; Tedrow, J. S. J. Am. Chem. Soc. 1999, 121, 1994-1995. For a review of catalyzed conjugate addition reactions, see: (c) Ferigna, B. I.; de Vries, A. H. M. Advances in Catalytic Processes; JAI Press: London, 1995; pp 151-192.
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For recent reviews, see: (a) Tamura, R.; Kamimura, A.; Ono, N. Synthesis 1991, 423-434. (b) Fuji, K.; Node, M. Synlett 1991, 603. (c) Rosini, G.; Ballini, R. Synthesis 1988, 833-847.
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Node, M.2
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For recent reviews, see: (a) Tamura, R.; Kamimura, A.; Ono, N. Synthesis 1991, 423-434. (b) Fuji, K.; Node, M. Synlett 1991, 603. (c) Rosini, G.; Ballini, R. Synthesis 1988, 833-847.
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Ballini, R.2
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The addition of 1,3-dicarbonyl compounds to nitrostyrene has been reported to be promoted by chiral alkaloid catalysts in up to 43% ee. Brunner, H.; Kimel, B. Monatsh. Chem. 1996, 127, 1063-1072.
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Reider, P.J.7
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0032536002
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2-symmetric bis(oxazoline) ligands in asymmetric catalysis, see: Ghosh, A. K.; Mathivanan, P.; Cappiello, J. Tetrahedron: Asymmetry 1998, 9, 1-45.
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19
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0032496927
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For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074- 3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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J. Am. Chem. Soc.
, vol.120
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Sibi, M.P.1
Shay, J.J.2
Liu, M.3
Jasperse, C.P.4
-
20
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0000526974
-
-
For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074- 3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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(1997)
J. Org. Chem.
, vol.62
, pp. 3800
-
-
Sibi, M.P.1
Ji, J.2
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21
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0032495777
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For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074-3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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(1998)
J. Am. Chem. Soc.
, vol.120
, pp. 3074-3088
-
-
Kanemasa, S.1
Oderaotoshi, Y.2
Sakaguchi, S.3
Yamamoto, H.4
Tanaka, J.5
Wada, E.6
Curran, D.P.7
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22
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0032575232
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-
For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074- 3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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(1998)
Tetrahedron
, vol.54
, pp. 6099-6110
-
-
Carbone, P.1
Desimoni, G.2
Faita, G.3
Filippone, S.4
Righetti, P.5
-
23
-
-
0030995739
-
-
For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074- 3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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(1997)
Tetrahedron
, vol.53
, pp. 7671-7688
-
-
Desimoni, G.1
Faita, G.2
Invernizzi, A.G.3
Righetti, P.P.4
-
24
-
-
0030984060
-
-
For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074- 3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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(1997)
Tetrahedron: Asymmetry
, vol.8
, pp. 3079-3087
-
-
Takacs, J.M.1
Quincy, D.A.2
Shay, W.3
Jones, B.E.4
Ross C.R. III5
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25
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0026452321
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For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074- 3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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(1992)
Tetrahedron Lett.
, vol.33
, pp. 6807-6810
-
-
Corey, E.J.1
Ishihara, K.2
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26
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0000068548
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-
For examples of the use of bis(oxazoline)magnesium complexes in catalysis, see the following. Conjugate additions of O-benzylhydroxylamine to unsaturated amides: (a) Sibi, M. P.; Shay, J. J.; Liu, M.; Jasperse, C. P. J. Am. Chem. Soc. 1998, 120, 6615-6616. Radical additions to α,β-unsaturated imides: (b) Sibi, M. P.; Ji, J. J. Org. Chem. 1997, 62, 3800. Diels-Alder reaction: (c) Kanemasa, S.; Oderaotoshi, Y.; Sakaguchi, S.; Yamamoto, H.; Tanaka, J.; Wada, E.; Curran, D. P. J. Am. Chem. Soc. 1998, 120, 3074- 3088. (d) Carbone, P.; Desimoni, G.; Faita, G.; Filippone, S.; Righetti, P. Tetrahedron 1998, 54, 6099-6110. (e) Desimoni, G.; Faita, G.; Invernizzi, A. G.; Righetti, P. P. Tetrahedron 1997, 53, 7671-7688. (f) Takacs, J. M.; Quincy, D. A.; Shay, W.; Jones, B. E.; Ross, C. R., III. Tetrahedron: Asymmetry 1997, 8, 3079-3087. (g) Corey, E. J.; Ishihara, K. Tetrahedron Lett. 1992, 33, 6807-6810. Nitrone 1,3-dipolar cycloadditions: (h) Gothelf, K. V.; Hazell, R. G.; Jorgensen, K. A. J. Org. Chem. 1998, 53, 5483-5488.
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J. Org. Chem.
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Gothelf, K.V.1
Hazell, R.G.2
Jorgensen, K.A.3
-
27
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84920349640
-
-
note
-
The adducts of β-ketoesters with nitrostyrenes are formed as 1:1 mixtures of compounds diastereomeric at the product ketoester α-position due to rapid equilibration under the reaction conditions. By NMR, the enol tautomer is also observed sometimes. See Supporting Information.
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-
-
-
28
-
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84920342690
-
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note
-
3 is added, followed by 200 mg of 4-Å molecular sieves, and the resulting mixture is stirred for an additional 90 min. Following this, nitrostyrene (149 mg, 1 mmol, 1 equiv) is added, followed by ethyl acetoacetate (0.15 mL, 1.2 mmol, 1.2 equiv) and N-methylmorpholine (6.6 μL, 0.06 mmol, 0.06 equiv). Conversion and selectivity are determined by HPLC analysis. See the Supporting Information for details.
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-
-
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29
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0033547986
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See also ref 9
-
For a computational study of the effect of the bridge substituents on the Diels-Alder reaction catalyzed by bis(oxazoline)copper complexes, see: Davies, I. W.; Deeth, R. J.; Larsen, R. D.; Reider, P. J. Tetrahedron Lett. 1999, 40, 1233-1236. See also ref 9.
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(1999)
Tetrahedron Lett.
, vol.40
, pp. 1233-1236
-
-
Davies, I.W.1
Deeth, R.J.2
Larsen, R.D.3
Reider, P.J.4
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30
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84920347881
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-
note
-
The effect of water on magnesium bis(oxazoline)-catalyzed reactions has been documented in other cases (refs 10d,e,h). See the Supporting Information for an investigation of this effect.
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-
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32
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84987039439
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D = -33.8 (c 0.89 MeOH) for the (S)-isomer: Meyers, A. I.; Snyder, L. J. Org. Chem. 1993, 58, 36-42).
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(1994)
J. Prakt. Chem.
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Mulzer1
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34
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84920355834
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note
-
See Supporting Information for a description of possible transition states.
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