Enantioposition-Selective Copper-Catalyzed Azide–Alkyne Cycloaddition for Construction of Chiral Biaryl Derivatives
摘要:
A highly enantioposition-selective copper-catalyzed azidealkyne cycloaddition (CuAAC) of dialkynes bearing prochiral biaryls has been developed for the construction of 1,2,3-triazoles bearing axially chiral biaryl groups in up to 76% yield and up to 99% ee.
Enantioposition-Selective Copper-Catalyzed Azide–Alkyne Cycloaddition for Construction of Chiral Biaryl Derivatives
摘要:
A highly enantioposition-selective copper-catalyzed azidealkyne cycloaddition (CuAAC) of dialkynes bearing prochiral biaryls has been developed for the construction of 1,2,3-triazoles bearing axially chiral biaryl groups in up to 76% yield and up to 99% ee.
Mechanistic Insights into Copper-Catalyzed Azide–Alkyne Cycloaddition (CuAAC): Observation of Asymmetric Amplification
作者:Yasuhiro Uozumi、Takao Osako
DOI:10.1055/s-0034-1380534
日期:——
A mechanistic study of copper-catalyzed azide-alkyne cycloaddition (CuAAC) was examined using an enantioposition-selective asymmetric CuAAC as a probe reaction system. Based on the observed asymmetric amplification (a positive nonlinear effect), we proposed that a dimeric chiral copper complex is involved as a reactive intermediate in the copper-catalyzed azide-alkyne cycloaddition.
Enantioposition-Selective Copper-Catalyzed Azide–Alkyne Cycloaddition for Construction of Chiral Biaryl Derivatives
作者:Takao Osako、Yasuhiro Uozumi
DOI:10.1021/ol502778j
日期:2014.11.21
A highly enantioposition-selective copper-catalyzed azidealkyne cycloaddition (CuAAC) of dialkynes bearing prochiral biaryls has been developed for the construction of 1,2,3-triazoles bearing axially chiral biaryl groups in up to 76% yield and up to 99% ee.