A green and mild method has been developed for the conversion of β-ketonitriles into α-ketoesters under catalyst-free conditions. A plausible mechanism is that visible light promotes singlet oxygen generation to form the products through oxidative C–H bond functionalization and C–C σ -bond cleavage.
A novel and efficientoxidativeesterification method for the synthesis of [small alpha]-ketoesters has been developed under mild and environment benign conditions, which is a facile one-pot approach to [small alpha]-ketoesters from...
I<sub>2</sub>-promoted cross-dehydrogenative coupling of α-carbonyl aldehydes with alcohols for the synthesis of α-ketoesters
作者:A. Sagar、Shinde Vidyacharan、Duddu S. Sharada
DOI:10.1039/c4ra06028h
日期:——
A facile and efficient method for the synthesis of α-ketoesters from alcohols and α-carbonyl aldehydes has been developed at room temperature under metal-free conditions for the first time. Various alcohols and α-carbonyl aldehydes could participate in this reaction to afford the desired products in excellent yields.
Enantioselective Cyano-Alkoxycarbonylation of α-Oxoesters Promoted by Brønsted Acid–Lewis Base Cooperative Catalysts
作者:Kazuaki Ishihara、Yoshihiro Ogura
DOI:10.1021/acs.orglett.5b03093
日期:2015.12.18
The highly enantioselective cyano-alkoxycarbonylation of alpha-oxoesters with alkyl cyanoformates is promoted by a new chiral Bronsted acid-Lewis base cooperative organocatalyst. The present catalysis can be performed at room temperature under nitrogen or air.