A palladium‐catalyzed four‐component carbonylative coupling reaction involving aryl halides, internal alkynes, arylboronic acids, and CO has been developed for the first time. All‐carbon substituted α‐unsaturated ketones and benzofulvenes can be selectively obtained in a highly regio‐ and stereocontrolled manner. Using Cu(TFA)2 as the additive, a series of tetrasubstituted α‐unsaturated ketones were
Ni-Catalyzed Divergent Cyclization/Carboxylation of Unactivated Primary and Secondary Alkyl Halides with CO<sub>2</sub>
作者:Xueqiang Wang、Yu Liu、Ruben Martin
DOI:10.1021/jacs.5b03340
日期:2015.5.27
A user-friendly Ni-catalyzed reductive cyclization/carboxylation of unactivated alkyl halides with. CO2 is described: The protocol operates under mild conditions with, an excellent chemoselectivity profile and a divergent syn/anti selectivity pattern that can be easily modulated by the Substrate utilized.