Aza-Michael reaction promoted by aqueous sodium carbonate solution
摘要:
A general and efficient aza-Michael reaction promoted by aqueous sodium carbonate solution has been developed. The reaction has complete mono-alkylation selectivity and proceeds with complete chirality retention for chiral amino esters. With a broad substrate scope, a well-common catalyst and simple operation, the catalytic approach provides a facile, practicable, economical, and environmentally benign method for the synthesis of beta-amino carbonyl compounds. (c) 2013 Elsevier Ltd. All rights reserved.
Aza-Michael reaction promoted by aqueous sodium carbonate solution
作者:Xiao-Ji Tang、Zhao-Lei Yan、Wen-Liang Chen、Ya-Ru Gao、Shuai Mao、Yan-Lei Zhang、Yong-Qiang Wang
DOI:10.1016/j.tetlet.2013.03.043
日期:2013.5
A general and efficient aza-Michael reaction promoted by aqueous sodium carbonate solution has been developed. The reaction has complete mono-alkylation selectivity and proceeds with complete chirality retention for chiral amino esters. With a broad substrate scope, a well-common catalyst and simple operation, the catalytic approach provides a facile, practicable, economical, and environmentally benign method for the synthesis of beta-amino carbonyl compounds. (c) 2013 Elsevier Ltd. All rights reserved.
Divergent Synthesis of Multisubstituted Tetrahydrofurans and Pyrrolidines via Intramolecular Aldol‐type Trapping of Onium Ylide Intermediates
作者:Changcheng Jing、Dong Xing、Lixin Gao、Jia Li、Wenhao Hu
DOI:10.1002/chem.201503621
日期:2015.12.21
divergent strategy for the synthesis of multisubstituted tetrahydrofurans and pyrrolidines, starting from easily accessible β‐hydroxyketones or β‐aminoketones to react with diazo compounds. Under RhII catalysis, this transformation is proposed to proceed through a metal–carbene‐induced oxonium ylide or ammonium ylide formation followed by an intramolecular aldol‐type trapping of these active intermediates