-
1
-
-
1842851813
-
-
and references therein
-
For reviews on the asymmetric construction of quaternary carbon centers, see: a) C. J. Douglas, L. E. Overman, Proc. Natl. Acad. Sci. USA 2004, 101, 5363, and references therein;
-
(2004)
Proc. Natl. Acad. Sci. USA
, vol.101
, pp. 5363
-
-
Douglas, C.J.1
Overman, L.E.2
-
6
-
-
33746303778
-
-
For some leading examples that rely on different strategies, see: a) F. Wu, H. Li, R. Hong, L. Deng, Angew. Chem. 2006, 118, 961;
-
(2006)
Angew. Chem.
, vol.118
, pp. 961
-
-
Wu, F.1
Li, H.2
Hong, R.3
Deng, L.4
-
10
-
-
24944551844
-
-
d) M. D. Augustin, L. Palais, A. Alexakis, Angew. Chem. 2005, 117, 1400;
-
(2005)
Angew. Chem.
, vol.117
, pp. 1400
-
-
Augustin, M.D.1
Palais, L.2
Alexakis, A.3
-
13
-
-
0041738169
-
-
For recent reviews on catalytic asymmetric conjugate additions, see: a) T. Hayashi, K. Yamasaki, Chem. Rev. 2003, 103, 2829;
-
(2003)
Chem. Rev.
, vol.103
, pp. 2829
-
-
Hayashi, T.1
Yamasaki, K.2
-
15
-
-
25844445144
-
-
For the catalytic asymmetric construction of adjacent tertiary and quaternary centers, see: a) T. B. Poulsen, C. Alemparte, S. Saaby, M. Bella, K. A. Jørgensen, Angew. Chem. 2005, 117, 2956;
-
(2005)
Angew. Chem.
, vol.117
, pp. 2956
-
-
Poulsen, T.B.1
Alemparte, C.2
Saaby, S.3
Bella, M.4
Jørgensen, K.A.5
-
17
-
-
1842732181
-
-
b) J. F. Austin, S.-G. Kim, C. J. Sinz, W.-J. Xiao, D. W. C. MacMillan, Proc. Natl. Acad. Sci. USA 2004, 101, 5482.
-
(2004)
Proc. Natl. Acad. Sci. USA
, vol.101
, pp. 5482
-
-
Austin, J.F.1
Kim, S.-G.2
Sinz, C.J.3
Xiao, W.-J.4
MacMillan, D.W.C.5
-
18
-
-
13644249902
-
-
a) M. S. Taylor, D. N. Zalatan, A. M. Lerchner, E. N. Jacobsen, J. Am. Chem. Soc. 2005, 127, 1313;
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 1313
-
-
Taylor, M.S.1
Zalatan, D.N.2
Lerchner, A.M.3
Jacobsen, E.N.4
-
19
-
-
0037174368
-
-
see also reference [2a]
-
b) Y. Hamashima, D. Hotta, M. Sodeoka, J. Am. Chem. Soc. 2002, 124, 11 240; see also reference [2a].
-
(2002)
J. Am. Chem. Soc.
, vol.124
, pp. 11240
-
-
Hamashima, Y.1
Hotta, D.2
Sodeoka, M.3
-
20
-
-
18844451481
-
-
H. Li, Y. Wang, L. Tang, F. Wu, X. Liu, C. Guo, B. M. Foxman, L. Deng, Angew. Chem. 2005, 117, 107;
-
(2005)
Angew. Chem.
, vol.117
, pp. 107
-
-
Li, H.1
Wang, Y.2
Tang, L.3
Wu, F.4
Liu, X.5
Guo, C.6
Foxman, B.M.7
Deng, L.8
-
23
-
-
25444451331
-
-
For recent examples of the use of cinchona alkaloid derivatives as efficient chiral-base catalysts, see: a) S. Sobhani, D. Fielenbach, M. Marigo, T. C. Wabnitz, K. A. Jørgensen, Chem. Eur. J. 2005, 11, 5689;
-
(2005)
Chem. Eur. J.
, vol.11
, pp. 5689
-
-
Sobhani, S.1
Fielenbach, D.2
Marigo, M.3
Wabnitz, T.C.4
Jørgensen, K.A.5
-
24
-
-
33746698658
-
-
b) G. Bartoli, M. Bosco, A. Carlone, M. Locatelli, P. Melchiorre, L. Sambri, Angew. Chem. 2005, 117, 6375;
-
(2005)
Angew. Chem.
, vol.117
, pp. 6375
-
-
Bartoli, G.1
Bosco, M.2
Carlone, A.3
Locatelli, M.4
Melchiorre, P.5
Sambri, L.6
-
26
-
-
4143136647
-
-
for a recent review, see: c) S.-K. Tian, Y. Chen, J. Hang, L. Tang, P. McDaid, L. Deng, Acc. Chem. Res. 2004, 37, 621.
-
(2004)
Acc. Chem. Res.
, vol.37
, pp. 621
-
-
Tian, S.-K.1
Chen, Y.2
Hang, J.3
Tang, L.4
McDaid, P.5
Deng, L.6
-
27
-
-
47749122232
-
-
(Eds.: A. Berkessel, H. Gröger), Wiley-VCH, Weinheim
-
For general reviews on organocatalysis, see: a) Asymmetric Organocatalysis (Eds.: A. Berkessel, H. Gröger), Wiley-VCH, Weinheim, 2004;
-
(2004)
Asymmetric Organocatalysis
-
-
-
28
-
-
33746701707
-
-
Eds.: K. N. Houk, B. List
-
b) Acc. Chem. Res. 2004, 37(8), special issue (Eds.: K. N. Houk, B. List);
-
(2004)
Acc. Chem. Res.
, vol.37
, Issue.8 SPEC. ISSUE
-
-
-
31
-
-
0030010376
-
-
For some biological studies on enantioenriched α-substituted succinimides, see: a) S. Ahmed, Drug Des. Discovery 1996, 14, 77;
-
(1996)
Drug Des. Discovery
, vol.14
, pp. 77
-
-
Ahmed, S.1
-
32
-
-
18644362147
-
-
b) M. L. Curtin, R. B. Garland, H. R. Heyman, R. R. Frey, M. R. Michaelides, J. Li, L. J. Pease, K. B. Glaser, P. A. Marcotte, S. K. Davidsen, Bioorg. Med. Chem. Lett. 2002, 12, 2919 ;
-
(2002)
Bioorg. Med. Chem. Lett.
, vol.12
, pp. 2919
-
-
Curtin, M.L.1
Garland, R.B.2
Heyman, H.R.3
Frey, R.R.4
Michaelides, M.R.5
Li, J.6
Pease, L.J.7
Glaser, K.B.8
Marcotte, P.A.9
Davidsen, S.K.10
-
33
-
-
0006329242
-
-
for the synthetic derivatization of this useful scaffold to afford functionalized open-chain derivatives and substituted pyrrolidines, see: c) A. R. Katritzky, J. Yao, M. Qi, Y. Chou, D. J. Sikora, S. Davis, Heterocycles 1998, 48, 2677;
-
(1998)
Heterocycles
, vol.48
, pp. 2677
-
-
Katritzky, A.R.1
Yao, J.2
Qi, M.3
Chou, Y.4
Sikora, D.J.5
Davis, S.6
-
34
-
-
0037727677
-
-
d) R. Ballini, G. Bosica, G. Cioci, D. Fiorini, M. Petrini, Tetrahedron 2003, 59, 3603.
-
(2003)
Tetrahedron
, vol.59
, pp. 3603
-
-
Ballini, R.1
Bosica, G.2
Cioci, G.3
Fiorini, D.4
Petrini, M.5
-
35
-
-
33746728555
-
-
a) R. Shintani, W.-L. Duan, T. Nagano, A. Okada, T. Hayashi, Angew. Chem. 2005, 117, 4687;
-
(2005)
Angew. Chem.
, vol.117
, pp. 4687
-
-
Shintani, R.1
Duan, W.-L.2
Nagano, T.3
Okada, A.4
Hayashi, T.5
-
37
-
-
4644350930
-
-
b) R. Shintani, K. Ueyama, I. Yamada, T. Hayashi, Org. Lett. 2004, 6, 3425.
-
(2004)
Org. Lett.
, vol.6
, pp. 3425
-
-
Shintani, R.1
Ueyama, K.2
Yamada, I.3
Hayashi, T.4
-
38
-
-
33646594410
-
-
After our manuscript had been submitted, the use of the same strategy for asymmetric addition to substituted maleimides to afford quaternary stereocenters was reported: c) R. Shintani, W.-L. Duan, T. Hayashi, J. Am. Chem. Soc. 2006, 128, 5628.
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 5628
-
-
Shintani, R.1
Duan, W.-L.2
Hayashi, T.3
-
39
-
-
19544393388
-
-
For selected examples, see: a) B. Vakulya, Sz. Varga, A. Csámpai, T. Soos, Org. Lett. 2005, 7, 1967;
-
(2005)
Org. Lett.
, vol.7
, pp. 1967
-
-
Vakulya, B.1
Varga, Sz.2
Csámpai, A.3
Soos, T.4
-
42
-
-
33645455231
-
-
c) Y. Wang, X. Liu, L. Deng, J. Am. Chem. Soc. 2006, 128, 3928.
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 3928
-
-
Wang, Y.1
Liu, X.2
Deng, L.3
-
43
-
-
0033520752
-
-
a) Y. Iwabuchi, M. Nakatani, N. Yokoyama, S. Hatakeyama, J. Am. Chem. Soc. 1999, 121, 10 219;
-
(1999)
J. Am. Chem. Soc.
, vol.121
, pp. 10219
-
-
Iwabuchi, Y.1
Nakatani, M.2
Yokoyama, N.3
Hatakeyama, S.4
-
44
-
-
0141743697
-
-
b) S. Kawahara, A. Nakano, T. Esumi, Y. Iwabuchi, S. Hatakeyama, Org. Lett. 2003, 5, 3103.
-
(2003)
Org. Lett.
, vol.5
, pp. 3103
-
-
Kawahara, S.1
Nakano, A.2
Esumi, T.3
Iwabuchi, Y.4
Hatakeyama, S.5
-
47
-
-
49649133588
-
-
For quinine-catalyzed conjugate additions of carbon-centered nucleophiles with low selectivity, see: a) H. Wynberg, R. Helder, Tetrahedron Lett. 1975, 16, 4057;
-
(1975)
Tetrahedron Lett.
, vol.16
, pp. 4057
-
-
Wynberg, H.1
Helder, R.2
-
50
-
-
33645952823
-
-
during our studies, two highly selective reactions catalyzed by natural cinchona alkaloids were reported: d) B. Török, M. Abid, G. London, J. Esquibel, M. Török, S. C. Mhadgut, P. Yan, G. K. S. Prakash, Angew. Chem. 2005, 117, 3146;
-
(2005)
Angew. Chem.
, vol.117
, pp. 3146
-
-
Török, B.1
Abid, M.2
London, G.3
Esquibel, J.4
Török, M.5
Mhadgut, S.C.6
Yan, P.7
Prakash, G.K.S.8
-
52
-
-
23844490047
-
-
e) S. Lou, B. M. Taoka, A. Ting, S. E. Schaus, J. Am. Chem. Soc. 2005, 127, 11 256.
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 11256
-
-
Lou, S.1
Taoka, B.M.2
Ting, A.3
Schaus, S.E.4
-
53
-
-
33746675353
-
-
see references [2a] and [8a]
-
For similar effects of the size of the ester group on the selectivity of organocatalytic asymmetric transformations, see references [2a] and [8a].
-
-
-
-
55
-
-
33746754441
-
-
2O to give fine colorless needles of a single diastereomer with the configuration shown in Equation (2). The same crystal used for X-ray crystallography was analyzed by chiral HPLC, which confirmed the presence of the major enantiomer. CCDC-296418 (5) and -605040 (4d) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.
-
-
-
-
56
-
-
33746770112
-
-
note
-
The relative configuration of 6 was assigned by using NMR spectroscopic analysis with extensive NOE interaction studies; see the Supporting Information for details.
-
-
-
|