Asymmetric Michael Addition of Silyl Nitronates to Cyclic α,β-Unsaturated Ketones Catalyzed by Chiral Quaternary Ammonium Bifluorides: Isolation and Selective Functionalization of Enol Silyl Ethers of Optically Active γ-Nitro Ketones.

ChemInform ◽  
2006 ◽  
Vol 37 (17) ◽  
Author(s):  
Takashi Ooi ◽  
Kanae Doda ◽  
Saki Takada ◽  
Keiji Maruoka
Keyword(s):  
Michael Addition ◽  
Quaternary Ammonium ◽  
Optically Active ◽  
Silyl Ethers ◽  
Unsaturated Ketones ◽  
Selective Functionalization ◽  
Silyl Nitronates ◽  
Asymmetric Michael Addition ◽  
Enol Silyl Ethers

Chiral Primary Amino Amide Alcohol Organocatalyst for the Asymmetric Michael Addition of 4-Hydroxycoumarin with α,β-Unsaturated Ketones

Heterocycles ◽  
2015 ◽  
Vol 90 (2) ◽  
pp. 1124 ◽  
Author(s):  
Hiroto Nakano ◽  
Jun Kumagai ◽  
Yoshihito Kohari ◽  
Chigusa Seki ◽  
Koji Uwai ◽  
...  
Keyword(s):  
Michael Addition ◽  
Unsaturated Ketones ◽  
Asymmetric Michael Addition ◽  
Amino Amide ◽  
Primary Amino

Organocatalytic regioselective asymmetric Michael addition of azlactones to o-hydroxy chalcone derivatives

2015 ◽  
Vol 13 (20) ◽  
pp. 5698-5709 ◽  
Author(s):  
Shao-Yun Zhang ◽  
Gui-Yu Ruan ◽  
Zhi-Cong Geng ◽  
Nai-Kai Li ◽  
Ming Lv ◽  
...  
Keyword(s):  
Michael Addition ◽  
Optically Active ◽  
Chalcone Derivatives ◽  
Asymmetric Michael Addition

Regio- and enantio-selective Michael addition between azlactones with o-hydroxy chalcone derivatives is reported. Optically active N,O-aminals are obtained in good yields with good to excellent diastereo- and enantio-selectivities.

Asymmetric Michael addition of glycine imines via quaternary ammonium ion catalysis

2005 ◽  
Vol 46 (26) ◽  
pp. 4461-4464 ◽  
Author(s):  
Barry Lygo ◽  
Bryan Allbutt ◽  
Eirene H.M. Kirton
Keyword(s):  
Michael Addition ◽  
Quaternary Ammonium ◽  
Ammonium Ion ◽  
Asymmetric Michael Addition

Diastereodivergent Catalytic Asymmetric Michael Addition of 2-Oxindoles to α,β-Unsaturated Ketones by Chiral Diamine Catalysts

2015 ◽  
Vol 17 (11) ◽  
pp. 2732-2735 ◽  
Author(s):  
Yuan Wei ◽  
Shigang Wen ◽  
Zunwu Liu ◽  
Xinxin Wu ◽  
Bubing Zeng ◽  
...  
Keyword(s):  
Michael Addition ◽  
Unsaturated Ketones ◽  
Chiral Diamine ◽  
Asymmetric Michael Addition ◽  
Catalytic Asymmetric
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