Synthesis of 3-(Diarylmethylenyl)oxindole by a Palladium-Catalyzed Domino Carbopalladation/C−H Activation/C−C Bond-Forming Process
作者:Artur Pinto、Luc Neuville、Pascal Retailleau、Jieping Zhu
DOI:10.1021/ol062022h
日期:2006.10.1
highly efficient palladium-catalyzed synthesis of unsymmetrically substituted 3-(diarylmethylenyl)indolinones from readily accessible starting materials is developed. The domino reaction involves a sequence of intermolecular carbopalladation, C-H activation, and C-C bond formation. A plausible mechanistic pathway for the reaction is discussed on the basis of the kinetic isotope effect [K(H)/K(D) (intermolecular)
[反应:见正文]从易于获得的起始原料开发了一种高效钯催化的不对称取代的3-(二芳基亚甲基)吲哚满酮的合成方法。多米诺骨牌反应涉及一系列的分子间碳氢合,CH活化和CC键形成。还根据动力学同位素效应[K(H)/ K(D)(分子间)= 1,K(H)/ K(D)(分子内)= 2.7]讨论了该反应的可能机理。作为电子效果。