A directing effect of neighboring aromatic groups on the regiochemistry of formation and stereochemistry of alkylation and bromination of ketone lithium enolates. Evidence for lithium-arene coordination and dramatic effect of copper(I) in controlling stereochemistry and limiting polyalkylation
Organomanganese (II) reagents XVI1: copper-catalyzed 1,4-addition of organomanganese chlorides to conjugated enones
作者:Gérard Cahiez、Mouad Alami
DOI:10.1016/s0040-4039(00)99434-6
日期:1989.1
Copper-catalyzed conjugate addition of organomanganese chlorides to conjugated enones in THF, at 0°C, leads to the 1,4 addition products in high yields. The scope of the reaction is very large and the results are generally better than those obtained from organomagnesium compounds in the presence of a copper salt as well as from organocopper or cuprate reagents. Furthermore organomanganese chlorides are indisputably
Multifunctionalization of Unactivated Cyclic Ketones via Synergistic Catalysis of Copper and Diarylamine: Access to Cyclic α-Enaminone
作者:Yang Li、Ran Zhang、Xihe Bi、Junkai Fu
DOI:10.1021/acs.orglett.8b00125
日期:2018.2.16
A multifunctionalization of unactivated cyclicketonesvia synergistic catalysis of copper and diarylamine for the direct synthesis of cyclic α-enaminone is reported for the first time. This reaction goes through oxidative α-amination, followed by a desaturation, and features mild reaction conditions, a broad substrate scope, and great functional group tolerance.