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Diastereoselective aldol reaction: a) R. Annunziata, M. Cinquini, F. Cozzi, P. G. Cozzi, E. Consolandi, Tetrahedron 1991, 47, 7897-7910; b) K.-H. Suh, D.-J. Choo, Tetrahedron Lett. 1995, 36, 6109-6112; c) G. Lalic, A. D. Aloise, M. D. Shair, J. Am. Chem. Soc. 2003, 125, 2852-2853; Asymmetric aldol reaction.
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Asymmetric aldol reaction
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Diastereoselective aldol reaction: a) R. Annunziata, M. Cinquini, F. Cozzi, P. G. Cozzi, E. Consolandi, Tetrahedron 1991, 47, 7897-7910; b) K.-H. Suh, D.-J. Choo, Tetrahedron Lett. 1995, 36, 6109-6112; c) G. Lalic, A. D. Aloise, M. D. Shair, J. Am. Chem. Soc. 2003, 125, 2852-2853; Asymmetric aldol reaction.
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
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(2002)
Org. Lett.
, vol.4
, pp. 2109-2112
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-
Boeckman Jr., R.K.1
Clark, T.J.2
Shook, B.C.3
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32
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12444268072
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
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(2002)
Angew. Chem.
, vol.114
, pp. 2910-2914
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-
Longbottom, D.A.1
Morrison, A.J.2
Dixon, D.J.3
Ley, S.V.4
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33
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0037008172
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
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(2002)
Angew. Chem. Int. Ed.
, vol.41
, pp. 2786-2790
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-
-
34
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0037746922
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
-
(2002)
Org. Lett.
, vol.4
, pp. 2893-2895
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-
Bu, X.1
Wu, X.2
Xie, G.3
Guo, Z.4
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35
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2242488344
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-
Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
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(2002)
Angew. Chem.
, vol.114
, pp. 4755-4758
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Evans, D.A.1
Rajapakse, H.A.2
Chiu, A.3
Stenkamp, D.4
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36
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85047698843
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
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(2002)
Angew. Chem. Int. Ed.
, vol.41
, pp. 4573-4576
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37
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0037067104
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
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(2002)
J. Am. Chem. Soc.
, vol.124
, pp. 6552-6554
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-
Endo, A.1
Yanagisawa, A.2
Abe, M.3
Tohma, S.4
Kan, T.5
Fukuyama, T.6
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38
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0037195704
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
-
(2002)
J. Org. Chem.
, vol.67
, pp. 8618-8621
-
-
Aggarwal, V.K.1
Esquivel-Zamora, B.N.2
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39
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0038198909
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
-
(2003)
Org. Lett.
, vol.5
, pp. 1737-1740
-
-
Agapiou, K.1
Krische, M.J.2
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40
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0346150281
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
-
(2003)
Org. Lett.
, vol.5
, pp. 4587-4590
-
-
Ingenito, R.1
Wenschuh, H.2
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41
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Some recent reports: a) R. K. Jr., Boeckman, T. J. Clark, B. C. Shook, Org. Lett. 2002, 4, 2109-2112; b) D. A. Longbottom, A. J. Morrison, D. J. Dixon, S. V. Ley, Angew. Chem. 2002, 114, 2910-2914; Angew. Chem. Int. Ed. 2002, 41, 2786-2790; c) X. Bu, X. Wu, G. Xie, Z. Guo, Org. Lett. 2002, 4, 2893-2895; d) D. A. Evans, H. A. Rajapakse, A. Chiu, D. Stenkamp, Angew. Chem. 2002, 114, 4755-4758; Angew. Chem. Int. Ed. 2002, 41, 4573-4576; e) A. Endo, A. Yanagisawa, M. Abe, S. Tohma, T. Kan, T. Fukuyama, J. Am. Chem. Soc. 2002, 124, 6552-6554; f) V. K. Aggarwal, B. N. Esquivel-Zamora, J. Org. Chem. 2002, 67, 8618-8621; g) K. Agapiou, M. J. Krische, Org. Lett. 2003, 5, 1737-1740; h) R. Ingenito, H. Wenschuh, Org. Lett. 2003, 5, 4587-4590; i) J. A. Camarero, B. J. Hackel, J. J. de Yoreo, A. R. Mitchell, J. Org. Chem. 2004, 69, 4145-4151.
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(2004)
J. Org. Chem.
, vol.69
, pp. 4145-4151
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This thioesterification was accelerated by the addition of a cationic surfactant (CTAB). It is reasonable to postulate that this surfactant activates the carbonyl group of the aldehyde. Namely, the aldehyde in the cationic micellar system formed by the cationic surfactant would be activated by the cationic effect.
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The yields of these thioesterifications were affected by the electron density of the functional groups of aldehydes. It is reasonable to suppose that the acyl radical intermediate of the thioesterification is stabilized by electrical effects. That is, the acyl radical formed from the aliphatic aldehyde or aromatic aldehyde with an electron-releasing substituent would be stabilized by the captodative effect. On the other hand, the acyl radical formed from the aromatic aldehyde with an electron-withdrawing substituent would not be stabilized, therefore, the thioesterification with 1j and 1k did not proceed at all; cf. captodative effect: L. Stella, J. N. Harvey, in Radicals in Organic Synthesis, Vol. 1 (Eds.: P. Renaud, M. P. Sibi), Wiley-VCH, Weinheim, 2001, pp. 360-380. (Equation Presented)
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It is possible that this thioesterification proceeds via the nucleophilic addition of the thiyl radical to the aldehyde. Namely, the thiyl radical produced by the disulfide nucleophilically attacks the carbonyl group of the aldehyde, and then the alkoxyl radical (X) is formed. Next, the hydride radical is eliminated from the alkoxyl radical intermediate (X), and the thioesterification is achieved. If this thioesterification will proceed via this plausible reaction mechanism, the aldehydes with an electron-withdrawing substitute (1j, 1k) should be nucleophilically attacked by the thiyl radical. However, these thioesterification with 1j and 1k did not proceed at all (Table 4, entries 10, 11). In addition, the alkyl or aryl radical is more stable than the hydride radical, therefore, it is difficult that the hydride radical eliminates from the alkoxyl radical intermediate (X). Accordingly, it might be inferred from this reactivity that this thioesterification is achieved via the acyl radical intermediate (Scheme 1). (Equation Presented)
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84
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0037463474
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