syn-Selective and Enantioselective Direct Cross-Aldol Reactions between Aldehydes Catalyzed by an Axially Chiral Amino Sulfonamide

2007 ◽  
Vol 46 (10) ◽  
pp. 1738-1740 ◽  
Author(s):  
Taichi Kano ◽  
Yukako Yamaguchi ◽  
Youhei Tanaka ◽  
Keiji Maruoka
Keyword(s):  
Aldol Reactions ◽  
Axially Chiral ◽  
Direct Cross

syn-Selective and Enantioselective Direct Cross-Aldol Reactions Between Aldehydes Catalyzed by an Axially Chiral Amino Sulfonamide.

ChemInform ◽  
2007 ◽  
Vol 38 (25) ◽  
Author(s):  
Taichi Kano ◽  
Yukako Yamaguchi ◽  
Youhei Tanaka ◽  
Keiji Maruoka
Keyword(s):  
Aldol Reactions ◽  
Axially Chiral ◽  
Direct Cross

syn-Selective and Enantioselective Direct Cross-Aldol Reactions between Aldehydes Catalyzed by an Axially Chiral Amino Sulfonamide

2007 ◽  
Vol 119 (10) ◽  
pp. 1768-1770 ◽  
Author(s):  
Taichi Kano ◽  
Yukako Yamaguchi ◽  
Youhei Tanaka ◽  
Keiji Maruoka
Keyword(s):  
Aldol Reactions ◽  
Axially Chiral ◽  
Direct Cross

Theoretical Study of Stereoselectivity for Syn-Selective Cross-Aldol Reactions of Aldehydes Catalyzed by Chiral Diamine Organocatalysts

2013 ◽  
Vol 798-799 ◽  
pp. 59-62
Author(s):  
Cheng Yan Zhao ◽  
Ai Ping Fu ◽  
Hong Liang Li ◽  
Ping Wang ◽  
Yong Xu ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Enantiomeric Excess ◽  
Aldol Reactions ◽  
Quantum Mechanical ◽  
Computational Studies ◽  
Poor Agreement ◽  
Chiral Diamine ◽  
Direct Cross ◽  
The Subject ◽  
Chiral Diamines

Quantum mechanical calculations have been performed to study the stereoselectivities in the direct cross-aldol reactions of aldehydes catalyzed by simple chiral diamines. The detailed computational studies on the stereochemistry-controlling step of the subject reactions have been presented by DFT calculations at the B3LYP/6-31G* level. The poor agreement between the calculated and the observed diastereomeric ratio and enantiomeric excess values is obtained for all diamines catalysts. Further M06-2X calculations can provide a reasonable explanation for the observed syn-selectivities of the asymmetric cross-aldol reaction between propionaldehyde and 4-nitrobenzaldehyde.

Design of a Binaphthyl-Based Axially Chiral Amino Acid as an Organocatalyst for Direct Asymmetric Aldol Reactions

2006 ◽  
Vol 1 (1-2) ◽  
pp. 210-215 ◽  
Author(s):  
Taichi Kano ◽  
Osamu Tokuda ◽  
Jun Takai ◽  
Keiji Maruoka
Keyword(s):  
Amino Acid ◽  
Aldol Reactions ◽  
Asymmetric Aldol ◽  
Axially Chiral

scholarly journals Aldol Reactions of Axially Chiral 5-Methyl-2-(o-aryl)imino-3-(o-aryl)-thiazolidine-4-ones

Molecules ◽  
2016 ◽  
Vol 21 (6) ◽  
pp. 788
Author(s):  
Sule Erol Gunal ◽  
Ilknur Dogan
Keyword(s):  
Aldol Reactions ◽  
Axially Chiral
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