Flexible Strategy for Syntheses of Spirooxindoles using Palladium-Catalyzed Carbosilylation and Sakurai-Type Cyclization
作者:Sudhir M. Hande、Motoyuki Nakajima、Haruhi Kamisaki、Chihiro Tsukano、Yoshiji Takemoto
DOI:10.1021/ol2003447
日期:2011.4.1
The intramolecular carbosilylation of N-[2-(1,3-butenyl)aryl]carbamoylchloride has been investigated. The reaction with hexamethyldisilane proceeds smoothly in the presence of a catalytic amount of [Pd(η3-allyl)Cl]2 to give oxindoles with an allylsilane functional group in good yield. The subsequent subjection of the products to a Sakurai-type reaction provides more advanced tricyclic spirooxindoles