Positive Effect of Water in Asymmetric Direct Aldol Reactions with Primary Amine Organocatalyst: Experimental and Computational Studies

2015 ◽  
Vol 10 (10) ◽  
pp. 2112-2116 ◽  
Author(s):  
Shin A. Moteki ◽  
Hiroki Maruyama ◽  
Keiji Nakayama ◽  
Hai-Bei Li ◽  
Galina Petrova ◽  
...  
Keyword(s):  
Primary Amine ◽  
Aldol Reactions ◽  
Computational Studies ◽  
Effect Of Water ◽  
Positive Effect

ChemInform Abstract: Positive Effect of Water in Asymmetric Direct Aldol Reactions with Primary Amine Organocatalyst: Experimental and Computational Studies.

ChemInform ◽  
2016 ◽  
Vol 47 (6) ◽  
pp. no-no
Author(s):  
Shin A. Moteki ◽  
Hiroki Maruyama ◽  
Keiji Nakayama ◽  
Hai-Bei Li ◽  
Galina Petrova ◽  
...  
Keyword(s):  
Primary Amine ◽  
Aldol Reactions ◽  
Computational Studies ◽  
Effect Of Water ◽  
Positive Effect

scholarly journals Chiral Primary Amine Organocatalysts for Syn-selective Asymmetric Cross-Aldol Reactions

2011 ◽  
Vol 32 (6-8) ◽  
pp. 899-903 ◽  
Author(s):  
Qiang GAO ◽  
Yan LIU ◽  
Shengmei LU ◽  
Can LI
Keyword(s):  
Primary Amine ◽  
Aldol Reactions

ChemInform Abstract: Asymmetric Retro- and Transfer-Aldol Reactions Catalyzed by a Simple Chiral Primary Amine.

ChemInform ◽  
2010 ◽  
Vol 41 (35) ◽  
pp. no-no
Author(s):  
Sanzhong Luo ◽  
Pengxin Zhou ◽  
Jiuyuan Li ◽  
Jin-Pei Cheng
Keyword(s):  
Primary Amine ◽  
Aldol Reactions

Highly Enantioselective Directsyn- andanti-Aldol Reactions of Dihydroxyacetones Catalyzed by Chiral Primary Amine Catalysts

2008 ◽  
Vol 10 (4) ◽  
pp. 653-656 ◽  
Author(s):  
Sanzhong Luo ◽  
Hui Xu ◽  
Long Zhang ◽  
Jiuyuan Li ◽  
Jin-Pei Cheng
Keyword(s):  
Primary Amine ◽  
Aldol Reactions ◽  
Amine Catalysts

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.

Asymmetric Retro- and Transfer-Aldol Reactions Catalyzed by a Simple Chiral Primary Amine

2010 ◽  
Vol 16 (15) ◽  
pp. 4457-4461 ◽  
Author(s):  
Sanzhong Luo ◽  
Pengxin Zhou ◽  
Jiuyuan Li ◽  
Jin-Pei Cheng
Keyword(s):  
Primary Amine ◽  
Aldol Reactions

Positive Effect of Water Vapor on CO Oxidation at Low Temperature over Pd/CeO2–TiO2 Catalyst

2008 ◽  
Vol 126 (3-4) ◽  
pp. 353-360 ◽  
Author(s):  
Feixue Liang ◽  
Huaqing Zhu ◽  
Zhangfeng Qin ◽  
Hui Wang ◽  
Guofu Wang ◽  
...  
Keyword(s):  
Water Vapor ◽  
Low Temperature ◽  
Co Oxidation ◽  
Tio2 Catalyst ◽  
Effect Of Water ◽  
Positive Effect
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