A Novel Synthesis of Highly Branched-Alkyl Aryl Ketones Using the Conjugate Addition of the Gilman Lithio Cuprate toβ-Methylthio-α,β-unsaturated Ketones: Abnormal Reactivity of the Intermediary Enolates toward Molecular Oxygen

1999 ◽  
Vol 28 (2) ◽  
pp. 107-108 ◽  
Author(s):  
Takayuki Arai ◽  
Motohiro Akazome ◽  
Katsuyuki Ogura
Keyword(s):  
Molecular Oxygen ◽  
Conjugate Addition ◽  
Alkyl Aryl ◽  
Unsaturated Ketones ◽  
Novel Synthesis ◽  
Aryl Ketones

Organocuprates as electron transfer reagents. Evaluation for conjugate addition of electrophiles to α,β-unsaturated ketones

1981 ◽  
Vol 34 (1) ◽  
pp. 181 ◽  
Author(s):  
DJ Hannah ◽  
RAJ Smith ◽  
I Teoh ◽  
RT Weavers
Keyword(s):  
Electron Transfer ◽  
Conjugate Addition ◽  
Alkyl Aryl ◽  
Unsaturated Ketones ◽  
Electron Transfer Properties ◽  
Synthetic Application ◽  
Transfer Properties

The reaction of a series of organocuprate systems containing alkyl, aryl, alkynyl, silylalkyl or phenylthio groups with (1) is reported. Some of these organocuprates showed electron transfer properties and were relatively unreactive toward conjugate addition, hence have potential synthetic application as organocuprates involving an external electrophile.

Nickel-catalyzed conjugate addition of alkynyl groups to .alpha.,.beta.-unsaturated ketones

1980 ◽  
Vol 45 (15) ◽  
pp. 3053-3061 ◽  
Author(s):  
Jeffrey Schwartz ◽  
Denise B. Carr ◽  
Robert T. Hansen ◽  
Fabian M. Dayrit
Keyword(s):  
Conjugate Addition ◽  
Unsaturated Ketones ◽  
Alpha Beta

Asymmetric conjugate additions of 2-substituted benzofuran-3(2H)-ones to α,β-unsaturated ketones catalyzed by chiral copper complexes

2017 ◽  
Vol 15 (19) ◽  
pp. 4191-4198 ◽  
Author(s):  
Haojiang Wang ◽  
Yifeng Wang ◽  
Cheng Zhang ◽  
Yidong Jiang ◽  
Mingming Chu ◽  
...  
Keyword(s):  
Copper Complexes ◽  
Conjugate Addition ◽  
Conjugate Additions ◽  
Unsaturated Ketones

A highly enantioselective conjugate addition of 2-substituted benzofuran-3(2H)-ones to α,β-unsaturated ketones promoted by chiral copper complexes has been developed.

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