-
1
-
-
33745683617
-
-
For reviews on Brønsted acid catalysis, see: a
-
For reviews on Brønsted acid catalysis, see: a) T. Akiyama, J. Itoh, K. Fuchibe, Adv. Synth. Catal. 2006, 348, 999-1010;
-
(2006)
Adv. Synth. Catal
, vol.348
, pp. 999-1010
-
-
Akiyama, T.1
Itoh, J.2
Fuchibe, K.3
-
3
-
-
33646468489
-
-
Angew. Chem. Int. Ed. 2006, 45, 1520-1543;
-
(2006)
Angew. Chem. Int. Ed
, vol.45
, pp. 1520-1543
-
-
-
4
-
-
33845477631
-
-
c) S. J. Connon, Angew. Chem. 2006, 118, 4013-4016;
-
(2006)
Angew. Chem
, vol.118
, pp. 4013-4016
-
-
Connon, S.J.1
-
5
-
-
33746272976
-
-
Angew. Chem. Int. Ed. 2006, 45, 3909-3912;
-
(2006)
Angew. Chem. Int. Ed
, vol.45
, pp. 3909-3912
-
-
-
7
-
-
38349189109
-
-
e) T. Akiyama, Chem. Rev. 2007, 107, 5744-5758;
-
(2007)
Chem. Rev
, vol.107
, pp. 5744-5758
-
-
Akiyama, T.1
-
8
-
-
53549096325
-
-
Ed, P. I. Dalko, Wiley-VCH, Weinheim
-
f) J. D. McGilvra, V. B. Gondi, V. H. Rawal in Enantioselective Organocatalysis: Reactions and Procedures (Ed.: P. I. Dalko), Wiley-VCH, Weinheim, 2007, pp. 189-254.
-
(2007)
Enantioselective Organocatalysis: Reactions and Procedures
, pp. 189-254
-
-
McGilvra, J.D.1
Gondi, V.B.2
Rawal, V.H.3
-
9
-
-
6044226554
-
-
a) T. Akiyama, J. Itoh, K. Yokota, K. Fuchibe, Angew. Chem. 2004, 116, 1592-1594;
-
(2004)
Angew. Chem
, vol.116
, pp. 1592-1594
-
-
Akiyama, T.1
Itoh, J.2
Yokota, K.3
Fuchibe, K.4
-
10
-
-
2342570203
-
-
Angew. Chem. Int. Ed. 2004, 43, 1566-1568;
-
(2004)
Angew. Chem. Int. Ed
, vol.43
, pp. 1566-1568
-
-
-
12
-
-
4644355914
-
-
c) D. Uraguchi, K. Sorimachi, M. Terada, J. Am. Chem. Soc. 2004, 126, 11804-11805;
-
(2004)
J. Am. Chem. Soc
, vol.126
, pp. 11804-11805
-
-
Uraguchi, D.1
Sorimachi, K.2
Terada, M.3
-
13
-
-
27644568945
-
-
d) T. Akiyama, Y. Saitoh, H. Morita, K. Fuchibe, Adv. Synth. Catal. 2005, 347, 1523-1526;
-
(2005)
Adv. Synth. Catal
, vol.347
, pp. 1523-1526
-
-
Akiyama, T.1
Saitoh, Y.2
Morita, H.3
Fuchibe, K.4
-
14
-
-
33746182597
-
-
e) S. Hoffmann, A. M. Seayad, B. List, Angew. Chem. 2005, 117, 7590-7593;
-
(2005)
Angew. Chem
, vol.117
, pp. 7590-7593
-
-
Hoffmann, S.1
Seayad, A.M.2
List, B.3
-
15
-
-
28044438742
-
-
Angew. Chem. Int. Ed. 2005, 44, 7424-7427;
-
(2005)
Angew. Chem. Int. Ed
, vol.44
, pp. 7424-7427
-
-
-
16
-
-
21644449826
-
-
f) D. Uraguchi, K. Sorimachi, M. Terada, J. Am. Chem. Soc. 2005, 127, 9360-9361;
-
(2005)
J. Am. Chem. Soc
, vol.127
, pp. 9360-9361
-
-
Uraguchi, D.1
Sorimachi, K.2
Terada, M.3
-
17
-
-
27844464898
-
-
g) G. B. Rowland, H. L. Zhang, E. B. Rowland, S. Chennamadhavuni, Y. Wang, J. C. Antilla, J. Am. Chem. Soc. 2005, 127, 15696-15697;
-
(2005)
J. Am. Chem. Soc
, vol.127
, pp. 15696-15697
-
-
Rowland, G.B.1
Zhang, H.L.2
Rowland, E.B.3
Chennamadhavuni, S.4
Wang, Y.5
Antilla, J.C.6
-
18
-
-
24044538628
-
-
h) T. Akiyama, H. Morita, J. Itoh, K. Fuchibe, Org. Lett. 2005, 7, 2583-2585;
-
(2005)
Org. Lett
, vol.7
, pp. 2583-2585
-
-
Akiyama, T.1
Morita, H.2
Itoh, J.3
Fuchibe, K.4
-
19
-
-
24044465512
-
-
i) M. Rueping, E. Sugiono, C. Azap, T. Theissmann, M. Bolte, Org. Lett. 2005, 7, 3781-3783;
-
(2005)
Org. Lett
, vol.7
, pp. 3781-3783
-
-
Rueping, M.1
Sugiono, E.2
Azap, C.3
Theissmann, T.4
Bolte, M.5
-
20
-
-
25444480017
-
-
j) M. Rueping, C. Azap, E. Sugiono, T. Theissmann, Synlett 2005, 2367-2369;
-
(2005)
Synlett
, pp. 2367-2369
-
-
Rueping, M.1
Azap, C.2
Sugiono, E.3
Theissmann, T.4
-
21
-
-
33746282355
-
-
k) M. Terada, K. Machioka, K. Sorimachi, Angew. Chem. 2006, 118, 2312-2315;
-
(2006)
Angew. Chem
, vol.118
, pp. 2312-2315
-
-
Terada, M.1
Machioka, K.2
Sorimachi, K.3
-
22
-
-
33746292951
-
-
Angew. Chem. Int. Ed. 2006, 45, 2254-2257;
-
(2006)
Angew. Chem. Int. Ed
, vol.45
, pp. 2254-2257
-
-
-
23
-
-
33746323600
-
-
l) M. Rueping, E. Sugiono, C. Azap, Angew. Chem. 2006, 118, 2679-2681;
-
(2006)
Angew. Chem
, vol.118
, pp. 2679-2681
-
-
Rueping, M.1
Sugiono, E.2
Azap, C.3
-
24
-
-
33646559779
-
-
Angew. Chem. Int. Ed. 2006, 45, 2617-2619;
-
(2006)
Angew. Chem. Int. Ed
, vol.45
, pp. 2617-2619
-
-
-
25
-
-
33845329144
-
-
m) M. Rueping, A. P. Antonchick, T. Theissmann, Angew. Chem. 2006, 118, 6903-6907;
-
(2006)
Angew. Chem
, vol.118
, pp. 6903-6907
-
-
Rueping, M.1
Antonchick, A.P.2
Theissmann, T.3
-
26
-
-
33750148995
-
-
Angew. Chem. Int. Ed. 2006, 45, 6751-6755.
-
(2006)
Angew. Chem. Int. Ed
, vol.45
, pp. 6751-6755
-
-
-
28
-
-
33845329553
-
-
Angew. Chem. Int. Ed. 2006, 45, 7832-7835;
-
(2006)
Angew. Chem. Int. Ed
, vol.45
, pp. 7832-7835
-
-
-
29
-
-
30744477746
-
-
b) R. I. Storer, D. E. Carrera, Y. Ni, D. W. C. MacMillan, J. Am. Chem. Soc. 2006, 128, 84-86;
-
(2006)
J. Am. Chem. Soc
, vol.128
, pp. 84-86
-
-
Storer, R.I.1
Carrera, D.E.2
Ni, Y.3
MacMillan, D.W.C.4
-
30
-
-
31944452587
-
-
c) J. Seayad, A. M. Seayad, B. List, J. Am. Chem. Soc. 2006, 128, 1086-1087;
-
(2006)
J. Am. Chem. Soc
, vol.128
, pp. 1086-1087
-
-
Seayad, J.1
Seayad, A.M.2
List, B.3
-
31
-
-
33749522044
-
-
d) T. Akiyama, H. Morita, K. Fuchibe, J. Am. Chem. Soc. 2006, 128, 13070-13071;
-
(2006)
J. Am. Chem. Soc
, vol.128
, pp. 13070-13071
-
-
Akiyama, T.1
Morita, H.2
Fuchibe, K.3
-
32
-
-
33846157409
-
-
e) H. Liu, L. F. Cun, A. Q. Mi, Y. Z. Jiang, L. Z. Gong, Org. Lett. 2006, 8, 6023-6026;
-
(2006)
Org. Lett
, vol.8
, pp. 6023-6026
-
-
Liu, H.1
Cun, L.F.2
Mi, A.Q.3
Jiang, Y.Z.4
Gong, L.Z.5
-
33
-
-
34250780205
-
-
f) M. Rueping, E. Sugiono, S. A. Moreth, Adv. Synth. Catal. 2007, 349, 759-764;
-
(2007)
Adv. Synth. Catal
, vol.349
, pp. 759-764
-
-
Rueping, M.1
Sugiono, E.2
Moreth, S.A.3
-
34
-
-
34548378986
-
-
g) M. Terada, S. Yokoyama, K. Sorimachi, D. Uraguchi, Adv. Synth. Catal. 2007, 349, 1863-1867;
-
(2007)
Adv. Synth. Catal
, vol.349
, pp. 1863-1867
-
-
Terada, M.1
Yokoyama, S.2
Sorimachi, K.3
Uraguchi, D.4
-
36
-
-
33846972343
-
-
i) Q. Kang, Z. A. Zhao, S. L. You, J. Am. Chem. Soc. 2007, 129, 1484-1485;
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 1484-1485
-
-
Kang, Q.1
Zhao, Z.A.2
You, S.L.3
-
37
-
-
34248524344
-
-
j) G. L. Li, Y. X. Liang, J. C. Antilla, J. Am. Chem. Soc. 2007, 129, 5830-5831;
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 5830-5831
-
-
Li, G.L.1
Liang, Y.X.2
Antilla, J.C.3
-
38
-
-
34548259270
-
-
k) M. Terada, K. Machioka, K. Sorimachi, J. Am. Chem. Soc. 2007, 129, 10336-10337;
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 10336-10337
-
-
Terada, M.1
Machioka, K.2
Sorimachi, K.3
-
39
-
-
35748940920
-
-
l) Y. Liang, E. B. Rowland, G. B. Rowland, J. A. Perman, J. C. Antilla, Chem. Commun. 2007, 4477-4479;
-
(2007)
Chem. Commun
, pp. 4477-4479
-
-
Liang, Y.1
Rowland, E.B.2
Rowland, G.B.3
Perman, J.A.4
Antilla, J.C.5
-
40
-
-
33947574500
-
-
m) M. Rueping, E. Sugiono, T. Theissmann, A. Kuenkel, A. Kockritz, A. Pews-Davtyan, N. Nemati, M. Beller, Org. Lett. 2007, 9, 1065-1068;
-
(2007)
Org. Lett
, vol.9
, pp. 1065-1068
-
-
Rueping, M.1
Sugiono, E.2
Theissmann, T.3
Kuenkel, A.4
Kockritz, A.5
Pews-Davtyan, A.6
Nemati, N.7
Beller, M.8
-
41
-
-
34547487981
-
-
n) G. B. Rowland, E. B. Rowland, Y. X. Liang, J. A. Perman, J. C. Antilla, Org. Lett. 2007, 9, 2609-2611;
-
(2007)
Org. Lett
, vol.9
, pp. 2609-2611
-
-
Rowland, G.B.1
Rowland, E.B.2
Liang, Y.X.3
Perman, J.A.4
Antilla, J.C.5
-
42
-
-
35048845079
-
-
o) G. L. Li, G. B. Rowland, E. B. Rowland, J. C. Antilla, Org. Lett. 2007, 9, 4065-4068;
-
(2007)
Org. Lett
, vol.9
, pp. 4065-4068
-
-
Li, G.L.1
Rowland, G.B.2
Rowland, E.B.3
Antilla, J.C.4
-
44
-
-
0001559304
-
-
E. Valencia, A. J. Freyer, M. Shamma, V. Fajardo, Tetrahedron Lett. 1984, 25, 599-602.
-
(1984)
Tetrahedron Lett
, vol.25
, pp. 599-602
-
-
Valencia, E.1
Freyer, A.J.2
Shamma, M.3
Fajardo, V.4
-
45
-
-
0034736019
-
-
a) B. Portevin, C. Tordjman, P. Pastoureau, J. Bonnet, G. De Nanteuil, J. Med. Chem. 2000, 43, 4582-4593;
-
(2000)
J. Med. Chem
, vol.43
, pp. 4582-4593
-
-
Portevin, B.1
Tordjman, C.2
Pastoureau, P.3
Bonnet, J.4
De Nanteuil, G.5
-
46
-
-
0346104837
-
-
b) T. L. Stuk, B. K. Assink, R. C. Bates, D. T. Erdman, V. Fedij, S. M. Jennings, J. A. Lassig, R. J. Smith, T. L. Smith, Org. Process Res. Dev. 2003, 7, 851-855.
-
(2003)
Org. Process Res. Dev
, vol.7
, pp. 851-855
-
-
Stuk, T.L.1
Assink, B.K.2
Bates, R.C.3
Erdman, D.T.4
Fedij, V.5
Jennings, S.M.6
Lassig, J.A.7
Smith, R.J.8
Smith, T.L.9
-
47
-
-
84980314283
-
-
a) T. Kurihara, K. Fukunaga, T. Sakaguchi, H. Hirano, J. Heterocycl. Chem. 1975, 12, 989-993;
-
(1975)
J. Heterocycl. Chem
, vol.12
, pp. 989-993
-
-
Kurihara, T.1
Fukunaga, K.2
Sakaguchi, T.3
Hirano, H.4
-
48
-
-
0030586190
-
-
b) P. J. Kukkola, N. A. Bilci, T. J. Ikeler, Tetrahedron Lett. 1996, 37, 5065-5068;
-
(1996)
Tetrahedron Lett
, vol.37
, pp. 5065-5068
-
-
Kukkola, P.J.1
Bilci, N.A.2
Ikeler, T.J.3
-
49
-
-
0035823825
-
-
c) N. Chatani, T. Asaumi, S. Yorimitsu, T. Ikeda, F. Kakiuchi, S. Murai, J. Am. Chem. Soc. 2001, 123, 10935-10941;
-
(2001)
J. Am. Chem. Soc
, vol.123
, pp. 10935-10941
-
-
Chatani, N.1
Asaumi, T.2
Yorimitsu, S.3
Ikeda, T.4
Kakiuchi, F.5
Murai, S.6
-
50
-
-
0036003119
-
-
d) M. Bao, H. Nakamura, A. Inoue, Y. Yamamoto, Chem. Lett. 2002, 158-159;
-
(2002)
Chem. Lett
, pp. 158-159
-
-
Bao, M.1
Nakamura, H.2
Inoue, A.3
Yamamoto, Y.4
-
52
-
-
0038575883
-
-
f) H. Miyabe, K. Yoshida, Y. Kobayashi, A. Matsumura, Y. Takemoto, Synlett 2003, 1031-1033;
-
(2003)
Synlett
, pp. 1031-1033
-
-
Miyabe, H.1
Yoshida, K.2
Kobayashi, Y.3
Matsumura, A.4
Takemoto, Y.5
-
54
-
-
33644981030
-
-
h) Q. Shi, P. L. Ornstein, K. Briner, T. I. Richardson, M. B. Arnold, R. T. Backer, J. L. Buckmaster, E. J. Canada, C. W. Doecke, L. W. Hertel, N. Honigschmidt, H. M. Hsiung, S Husain, S. L. Kuklish, M. J. Martinelli, J. T. Mullaney, T. P. O'Brien, M. R. Reinhard, R. Rothhaar, J. Shah, Z. Wu, C. Xie, J. M. Zgombick, M. J. Fisher, Bioorg. Med. Chem. Lett. 2006, 16, 2341-2346;
-
(2006)
Bioorg. Med. Chem. Lett
, vol.16
, pp. 2341-2346
-
-
Shi, Q.1
Ornstein, P.L.2
Briner, K.3
Richardson, T.I.4
Arnold, M.B.5
Backer, R.T.6
Buckmaster, J.L.7
Canada, E.J.8
Doecke, C.W.9
Hertel, L.W.10
Honigschmidt, N.11
Hsiung, H.M.12
Husain, S.13
Kuklish, S.L.14
Martinelli, M.J.15
Mullaney, J.T.16
O'Brien, T.P.17
Reinhard, M.R.18
Rothhaar, R.19
Shah, J.20
Wu, Z.21
Xie, C.22
Zgombick, J.M.23
Fisher, M.J.24
more..
-
55
-
-
33846000978
-
-
i) M. Buchert, S. Meinke, A. Prenzel, N. Deppermann, W. Maison, Org. Lett. 2006, 8, 5553-5556.
-
(2006)
Org. Lett
, vol.8
, pp. 5553-5556
-
-
Buchert, M.1
Meinke, S.2
Prenzel, A.3
Deppermann, N.4
Maison, W.5
-
57
-
-
0000604655
-
-
a) R. E. Gawley, S. R. Chemburkar, A. L. Smith, T. V. Anklekar, J. Org. Chem. 1988, 53, 5381-5383;
-
(1988)
J. Org. Chem
, vol.53
, pp. 5381-5383
-
-
Gawley, R.E.1
Chemburkar, S.R.2
Smith, A.L.3
Anklekar, T.V.4
-
59
-
-
0035680653
-
-
c) D. Enders, V. Braig, G. Raabe, Can. J. Chem. 2001, 79, 1528-1535;
-
(2001)
Can. J. Chem
, vol.79
, pp. 1528-1535
-
-
Enders, D.1
Braig, V.2
Raabe, G.3
-
60
-
-
53549097442
-
-
R. T. Backer, I. Collado Cano, O. De Frutos-Garcia, C. W. Doecke, M. J. Fisher, S. L. Kuklish, V. Mancuso, M. Martinelli, J. T. Mullaney, P. L. Ornstein, C. Xie, Eli Lilly & Co. , WO 2003/061660, 2003;
-
d) R. T. Backer, I. Collado Cano, O. De Frutos-Garcia, C. W. Doecke, M. J. Fisher, S. L. Kuklish, V. Mancuso, M. Martinelli, J. T. Mullaney, P. L. Ornstein, C. Xie, Eli Lilly & Co. ), WO 2003/061660, 2003;
-
-
-
-
62
-
-
38349022144
-
-
f) M. Lamblin, A. Couture, E. Deniau, P. Grandclaudon, Tetrahedron: Asymmetry 2008, 19, 111-123.
-
(2008)
Tetrahedron: Asymmetry
, vol.19
, pp. 111-123
-
-
Lamblin, M.1
Couture, A.2
Deniau, E.3
Grandclaudon, P.4
-
63
-
-
0028039221
-
-
a) Y. Sato, T. Nishimata, M. Mori, J. Org. Chem. 1994, 59, 6133-6135;
-
(1994)
J. Org. Chem
, vol.59
, pp. 6133-6135
-
-
Sato, Y.1
Nishimata, T.2
Mori, M.3
-
64
-
-
0006890108
-
-
b) Y. Sato, T. Nishimata, M. Mori, Heterocycles 1997, 44, 443-457;
-
(1997)
Heterocycles
, vol.44
, pp. 443-457
-
-
Sato, Y.1
Nishimata, T.2
Mori, M.3
-
65
-
-
34247897083
-
-
c) Z. Q. Wang, C. G. Feng, M. H. Xu, G. Q. Lin, J. Am. Chem. Soc. 2007, 129, 5336-5337;
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 5336-5337
-
-
Wang, Z.Q.1
Feng, C.G.2
Xu, M.H.3
Lin, G.Q.4
-
66
-
-
34548011736
-
-
d) T. Ogata, A. Ujihara, S. Tsuchida, T. Shimizu, A. Kaneshige, K. Tomioka, Tetrahedron Lett. 2007, 48, 6648-6650.
-
(2007)
Tetrahedron Lett
, vol.48
, pp. 6648-6650
-
-
Ogata, T.1
Ujihara, A.2
Tsuchida, S.3
Shimizu, T.4
Kaneshige, A.5
Tomioka, K.6
-
67
-
-
85190570567
-
-
Enantioselective stereoablative reactions afford enantiomerically enriched compounds by destroying a stereogenic element within a molecule. For a review, see: J. T. Mohr, D. C. Ebner, B. M. Stoltz, Org. Biomol. Chem. 2007, 5, 3571-3576
-
Enantioselective stereoablative reactions afford enantiomerically enriched compounds by destroying a stereogenic element within a molecule. For a review, see: J. T. Mohr, D. C. Ebner, B. M. Stoltz, Org. Biomol. Chem. 2007, 5, 3571-3576.
-
-
-
-
69
-
-
34250762375
-
-
b) M. Rueping, W. Ieawsuwan, A. P. Antonchick, B. J. Nachtsheim, Angew. Chem. 2007, 119, 2143-2146;
-
(2007)
Angew. Chem
, vol.119
, pp. 2143-2146
-
-
Rueping, M.1
Ieawsuwan, W.2
Antonchick, A.P.3
Nachtsheim, B.J.4
-
70
-
-
34250725648
-
-
Angew. Chem. Int. Ed. 2007, 46, 2097-2100;
-
(2007)
Angew. Chem. Int. Ed
, vol.46
, pp. 2097-2100
-
-
-
71
-
-
48349085300
-
-
c) P. Jiao, D. Nakashima, H. Yamamoto, Angew. Chem. 2008, 120, 2445-2447;
-
(2008)
Angew. Chem
, vol.120
, pp. 2445-2447
-
-
Jiao, P.1
Nakashima, D.2
Yamamoto, H.3
-
72
-
-
53249085441
-
-
Angew. Chem. Int. Ed. 2008, 47, 2411-2413.
-
(2008)
Angew. Chem. Int. Ed
, vol.47
, pp. 2411-2413
-
-
-
73
-
-
33845463690
-
-
For asymmetric Brønsted acid-catalyzed Michael additions of indoles, see: a
-
For asymmetric Brønsted acid-catalyzed Michael additions of indoles, see: a) W. Zhou, L. W. Xu, L. Li, L. Yang, C. G. Xia, Eur. J. Org. Chem. 2006, 5225-5227;
-
(2006)
Eur. J. Org. Chem
, pp. 5225-5227
-
-
Zhou, W.1
Xu, L.W.2
Li, L.3
Yang, L.4
Xia, C.G.5
-
74
-
-
53249096986
-
-
b) M. Rueping, B. J. Nachtsheim, S. A. Moreth, M. Bolte, Angew. Chem. 2008, 120, 603-606;
-
(2008)
Angew. Chem
, vol.120
, pp. 603-606
-
-
Rueping, M.1
Nachtsheim, B.J.2
Moreth, S.A.3
Bolte, M.4
-
75
-
-
38949210780
-
-
Angew. Chem. Int. Ed. 2008, 47, 593-596.
-
(2008)
Angew. Chem. Int. Ed
, vol.47
, pp. 593-596
-
-
-
76
-
-
0032924226
-
-
For examples of Brønsted and Lewis acid catalyzed formation of bis-indoles from imines, see: a W. H. Xie, K. M. Bloomfield, Y. F. Jin, N. Y. Dolney, P. G. Wang, Synlett 1999, 498-500;
-
For examples of Brønsted and Lewis acid catalyzed formation of bis-indoles from imines, see: a) W. H. Xie, K. M. Bloomfield, Y. F. Jin, N. Y. Dolney, P. G. Wang, Synlett 1999, 498-500;
-
-
-
-
77
-
-
0034040349
-
-
b) G. Babu, N. Sridhar, P. T. Perumal, Synth. Commun. 2000, 30, 1609-1614;
-
(2000)
Synth. Commun
, vol.30
, pp. 1609-1614
-
-
Babu, G.1
Sridhar, N.2
Perumal, P.T.3
-
78
-
-
0034840643
-
-
c) J. Hao, S. Taktak, K. Aikawa, Y. Yusa, M. Hatano, K. Mikami, Synlett 2001, 1443-1445;
-
(2001)
Synlett
, pp. 1443-1445
-
-
Hao, J.1
Taktak, S.2
Aikawa, K.3
Yusa, Y.4
Hatano, M.5
Mikami, K.6
-
79
-
-
2342483570
-
-
d) X. L. Mi, S. Z. Luo, J. Q. He, J. P. Cheng, Tetrahedron Lett. 2004, 45, 4567-4570.
-
(2004)
Tetrahedron Lett
, vol.45
, pp. 4567-4570
-
-
Mi, X.L.1
Luo, S.Z.2
He, J.Q.3
Cheng, J.P.4
-
80
-
-
53549133748
-
-
Potassium carbonate and activated neutral alumina also facilitated the aza-Michael addition of the Friedel-Crafts adduct 12a in comparable yield and diastereoselectivity; however, the reaction times were longer
-
Potassium carbonate and activated neutral alumina also facilitated the aza-Michael addition of the Friedel-Crafts adduct 12a in comparable yield and diastereoselectivity; however, the reaction times were longer.
-
-
-
-
81
-
-
0031566708
-
-
For an example of 1,3-cis-selective intramolecular hetero-Michael addition to form a five-membered ring, see: G. Mandville, C. Girard, R. Bloch, Tetrahedron: Asymmetry 1997, 8, 3665-3673.
-
For an example of 1,3-cis-selective intramolecular hetero-Michael addition to form a five-membered ring, see: G. Mandville, C. Girard, R. Bloch, Tetrahedron: Asymmetry 1997, 8, 3665-3673.
-
-
-
-
82
-
-
53549121507
-
-
2, the reaction of the Friedel-Crafts adduct 12a and indole (8a) to form bis-indole 11a was slow (<5% conversion after 24 h). In chlorobenzene, the Friedel-Crafts adduct 12a, although only sparingly soluble, underwent reaction with indole (8a) to form the bis-indole 11a.
-
2, the reaction of the Friedel-Crafts adduct 12a and indole (8a) to form bis-indole 11a was slow (<5% conversion after 24 h). In chlorobenzene, the Friedel-Crafts adduct 12a, although only sparingly soluble, underwent reaction with indole (8a) to form the bis-indole 11a.
-
-
-
-
83
-
-
53549120300
-
-
Racemic Friedel-Crafts adduct 12a was exposed to N-triflyl phosphoramide 7h in the absence of indole for 2 d. Following cyclization with DBU, isolindoline 10a was isolated in nearly quantitative yield and as a racemate. This provides further evidence that the enhancement of enantiomeric ratio is a result of a stereoablative nucleophilic displacement reaction: in the absence of a nucleophile, no enhancement occurs.
-
Racemic Friedel-Crafts adduct 12a was exposed to N-triflyl phosphoramide 7h in the absence of indole for 2 d. Following cyclization with DBU, isolindoline 10a was isolated in nearly quantitative yield and as a racemate. This provides further evidence that the enhancement of enantiomeric ratio is a result of a stereoablative nucleophilic displacement reaction: in the absence of a nucleophile, no enhancement occurs.
-
-
-
|