Highly asymmetric dihydroxylation of 1-aryl-1′-pyridyl alkenes
摘要:
The asymmetric dihydroxylation of 1-aryl-1'-pyridyl alkenes afforded the diols in high yield and excellent enantioselectivity. (C) 2000 Published by Elsevier Science Ltd.
Highly asymmetric dihydroxylation of 1-aryl-1′-pyridyl alkenes
摘要:
The asymmetric dihydroxylation of 1-aryl-1'-pyridyl alkenes afforded the diols in high yield and excellent enantioselectivity. (C) 2000 Published by Elsevier Science Ltd.
Catalytic Enantioselective Synthesis of α-Chiral Azaheteroaryl Ethylamines by Asymmetric Protonation
作者:Chao Xu、Calum W. Muir、Andrew G. Leach、Alan R. Kennedy、Allan J. B. Watson
DOI:10.1002/anie.201806956
日期:2018.8.27
The direct enantioselective synthesis of chiral azaheteroaryl ethylamines from vinyl‐substituted N‐heterocycles and anilines is reported. A chiral phosphoric acid (CPA) catalyst promotes dearomatizing aza‐Michael addition to give a prochiral exocyclic aryl enamine, which undergoes asymmetricprotonation upon rearomatization. The reaction accommodates a broad range of N‐heterocycles, nucleophiles, and