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9
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2342570203
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For seminal studies, see: T. Akiyama, J. Itoh, K. Yokota, and K. Fuchibe Angew. Chem., Int. Ed. 43 2004 1566 1568
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Akiyama, T.1
Itoh, J.2
Yokota, K.3
Fuchibe, K.4
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11
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58049202980
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M. Hatano, T. Maki, K. Moriyama, M. Arinobe, and K. Ishihara J. Am. Chem. Soc. 130 2008 16858 16860
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J. Am. Chem. Soc.
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Hatano, M.1
Maki, T.2
Moriyama, K.3
Arinobe, M.4
Ishihara, K.5
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20
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0000345527
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For an enantioselective epoxidation of allylic alcohols using tartaric acid derivatives as a chiral ligand, see: T. Katsuki E.N. Jacobsen, A. Pfaltz, H. Yamamoto, Comprehensive Asymmetric Catalysis Vol. 2 1999 Springer Berlin 621 648
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Comprehensive Asymmetric Catalysis
, vol.2
, pp. 621-648
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Katsuki, T.1
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22
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37649026114
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-(c) For tetraaryl-1
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For tetraaryl-1,3-dioxolane-4,5-dimethanol (TADDOL) as a chiral ligand of metal complexes, see: D. Seebach, A.K. Beck, and A. Heckel Angew. Chem., Int. Ed. 40 2001 92 138
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Angew. Chem., Int. Ed.
, vol.40
, pp. 92-138
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Seebach, D.1
Beck, A.K.2
Heckel, A.3
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24
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0032955886
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For O,O′-diacyl tartaric acid as a chiral sources for enantioselective catalytic oxidation of sulfides to sulfoxides, see: H. Tohma, S. Takizawa, H. Watanabe, Y. Fukuoka, T. Maegawa, and Y. Kita J. Org. Chem. 64 1999 3519 3523
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J. Org. Chem.
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, pp. 3519-3523
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Tohma, H.1
Takizawa, S.2
Watanabe, H.3
Fukuoka, Y.4
Maegawa, T.5
Kita, Y.6
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25
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0034034737
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-(a) For reviews
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H. Tohma, S. Takizawa, H. Morioka, T. Maegawa, and Y. Kita Chem. Pharm. Bull. 48 2000 445 446
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Chem. Pharm. Bull.
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Tohma, H.1
Takizawa, S.2
Morioka, H.3
Maegawa, T.4
Kita, Y.5
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30
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38049021525
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For enantioselective F-C reaction of indole with α-imino esters catalyzed by chiral Brønsted acids, see: M.J. Wanner, P. Hauwert, H.E. Schoemaker, R. de Gelder, J.H. van Maarseveen, and H. Hiemstra Eur. J. Org. Chem. 2008 180 185
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Eur. J. Org. Chem.
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Wanner, M.J.1
Hauwert, P.2
Schoemaker, H.E.3
De Gelder, R.4
Van Maarseveen, J.H.5
Hiemstra, H.6
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32
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33846972343
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For enantioselective F-C reaction of indole with imines catalyzed by chiral Brønsted acids, see: Q. Kang, Z.-A. Zhao, and S.-L. You J. Am. Chem. Soc. 129 2007 1484 1485
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J. Am. Chem. Soc.
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Kang, Q.1
Zhao, Z.-A.2
You, S.-L.3
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33
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34547487981
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G.B. Rowland, E.B. Rowland, Y. Liang, J.A. Perman, and J.C. Antilla Org. Lett. 9 2007 2609 2611
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Org. Lett.
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, pp. 2609-2611
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Rowland, G.B.1
Rowland, E.B.2
Liang, Y.3
Perman, J.A.4
Antilla, J.C.5
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35
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77956675561
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Compound 3 was purchased from Aldrich Chemical Co. (Catalogue No. 302813-5G) and used as it was
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Compound 3 was purchased from Aldrich Chemical Co. (Catalogue No. 302813-5G) and used as it was.
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36
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77956662823
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note
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2O (0.01 mmol) was added to the solution in one portion. After completion of the reaction (monitored by TLC), a few drops of triethylamine was added to the reaction mixture. The mixture was directly purified by silica-gel column chromatography to yield product 4a.
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37
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77956680410
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The monohydrate of 3 was purchased from Aldrich Chemical Co. (Catalogue No. 108081-5G) and used as it was
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The monohydrate of 3 was purchased from Aldrich Chemical Co. (Catalogue No. 108081-5G) and used as it was.
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-
-
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38
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77956684405
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-
note
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The reaction did not proceed at all without 3 in either presence or absence of MS 4 under similar reaction conditions.
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-
-
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39
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77956689754
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-
note
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3.
-
-
-
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40
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77956705725
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-
note
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2O which was employed as the catalyst.
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-
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41
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77956706110
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-
note
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The catalysts having lower water content were prepared from synthetic O,O′-di-p-toluoyl-d-tartaric acid which included 0.3 equiv of water.
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