Enantioselective 1,4-addition of aromatic nucleophiles to alpha,beta-unsaturated aldehydes using chiral organic catalysts
申请人:——
公开号:US20030236438A1
公开(公告)日:2003-12-25
Nonmetallic, chiral organic catalysts are used to catalyze the 1,4-addition of an aromatic nucleophile to an &agr;,&bgr;-unsaturated aldehyde. The aromatic nucleophile may be an N,N-disubstituted aniline compound, or an analog thereof. The reaction is efficient and enantioselective, and proceeds with a variety of substituted and unsubstituted aromatic nucleophiles and aldehydes. The invention also provides a method for the deamination of aromatic N,N-disubstituted amines such as those resulting from the 1,4-addition of an aromatic nucleophile to an &agr;,&bgr;-unsaturated aldehyde.
Enantioselective 1,4-addition of aromatic nucleophiles to α,β-unsaturated aldehydes using chiral organic catalysts
申请人:California Institute of Technology
公开号:US07173139B2
公开(公告)日:2007-02-06
Nonmetallic, chiral organic catalysts are used to catalyze the 1,4-addition of an aromatic nucleophile to an α,β-unsaturated aldehyde. The aromatic nucleophile may be an N,N-disubstituted aniline compound, or an analog thereof. The reaction is efficient and enantioselective, and proceeds with a variety of substituted and unsubstituted aromatic nucleophiles and aldehydes. The invention also provides a method for the deamination of aromatic N,N-disubstituted amines such as those resulting from the 1,4-addition of an aromatic nucleophile to an α,β-unsaturated aldehyde.
The Enantioselective Organocatalytic 1,4-Addition of Electron-Rich Benzenes to α,β-Unsaturated Aldehydes
作者:Nick A. Paras、David W. C. MacMillan
DOI:10.1021/ja025981p
日期:2002.7.1
The first enantioselectiveorganocatalyticalkylation of electron-rich benzene rings with α,β-unsaturated aldehydes has been accomplished. The use of iminium catalysis has provided a new strategy for the enantioselective construction of benzylic stereogenicity, an important chiral synthon for natural product and medicinal agent synthesis. The (2S,5S)-5-benzyl-2-tert-butylimidazolidinone amine catalyst