α-Palladation of Imines as Entry to Dehydrogenative Heck Reaction: Aerobic Oxidative Cyclization of <i>N</i>-Allylimines to Pyrroles
作者:Zhiyuan Chen、Beili Lu、Zhenhua Ding、Ke Gao、Naohiko Yoshikai
DOI:10.1021/ol400638q
日期:2013.4.19
here a palladium(II)-catalyzed oxidative cyclization reaction of N-allylimines derived from methyl ketones, typically acetophenones, affording pyrrole derivatives at room temperature under oxygen atmosphere. The reaction likely proceeds through α-palladation of the imine followed by olefin migratory insertion and β-hydride elimination, thus representing a new example of aerobic dehydrogenative Heck cyclization
我们在这里报告钯(II)催化的N-烯丙胺衍生自甲基酮(通常为苯乙酮)的氧化环化反应,在室温下在氧气气氛下提供吡咯衍生物。该反应可能通过亚胺的α-palletation继之以烯烃迁移插入和β-氢化物消除而进行,因此代表了好氧脱氢Heck环化的新实例。