Rhodium-Catalyzed Cyanation of C(sp2)–H Bond of Alkenes
摘要:
Efficient and selective rhodium-catalyzed cyanation of chelation-assisted C-H bonds of alkenes has been accomplished using environmentally benign N-cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS) as a cyanating reagent. The developed methodology tolerates various functional groups and allows the synthesis of diverse substituted acrylonitriles in good to excellent yields. Furthermore, the potential of the methodology was demonstrated through the formal synthesis of chlorpheniramine-based antagonist.
Copper-Catalyzed C–H Stereoselective Cyanation of Alkenes by Using an α-Iminonitrile as a Cyanating Reagent
作者:Yong-Ming Zhu、Zhen-Bang Chen、Qing-Qing Gao、Kui Liu
DOI:10.1055/s-0037-1610680
日期:2019.1
Abstract The first copper-catalyzed cyanation through alkene C–H bond activation by using an α-iminonitrile as a cyanating agent has been realized. The approach efficiently constructs acrylonitriles in good yields with the advantages of high regioselectivity, cost-benefit, and operational simplicity. The first copper-catalyzed cyanation through alkene C–H bond activation by using an α-iminonitrile
An efficient rhodium-catalyzed regioselective C-H bond cyanation of arenes was developed using tert-butyl isocyanide as the cyanide source. A wide range of (hetero)aryl and cycloalkenyl nitriles could be afforded with high regioselectivity and good functional group tolerance.