Cobalt-Catalyzed Olefinic C–H Alkenylation/Alkylation Switched by Carbonyl Groups
摘要:
The first cobalt-catalyzed cross-couplings between olefins has been demonstrated to provide C(alkenyl)-H alkenylation and alkylation products, using complex [Cp*Co(CO)I-2]. While coupling partner acrylates afforded conjugated dienoates, alpha,beta-unsaturated ketones led to gamma-alkenyl ketones completely, representing a switchable C-H functionalization controlled by different carbonyl groups.
Cobalt−Rhodium Heterobimetallic Nanoparticle-Catalyzed Synthesis of α,β-Unsaturated Amides from Internal Alkynes, Amines, and Carbon Monoxide
作者:Ji Hoon Park、Sun Young Kim、Soo Min Kim、Young Keun Chung
DOI:10.1021/ol0706760
日期:2007.6.1
The first example of cobalt-rhodium heterobimetallic nanoparticle-catalyzed synthesis of alkenyl amides from alkynes, amines, and carbonmonoxide is described.