Use of acetate as a leaving group in palladium-catalyzed nucleophilic substitution of benzylic esters
作者:Masashi Yokogi、Ryoichi Kuwano
DOI:10.1016/j.tetlet.2007.06.157
日期:2007.8
The palladium complex prepared in situ from [Pd(η3-C3H5)(cod)]BF4 and bidentate phosphine DPPF was a good catalyst for the nucleophilic substitution of benzyl acetate. Significant acceleration of the palladium-catalyzed substitution was observed when an alcohol was employed as a reaction solvent. The palladium catalyst was effective for the benzylation of various stabilized carbanions, amines, and
钯在从[钯(η原位络合物制备的3 -C 3 H ^ 5)(COD)] BF 4和双齿膦DPPF是一个很好的用于乙酸苄酯的亲核取代的催化剂。当将醇用作反应溶剂时,观察到钯催化的取代的显着加速。钯催化剂可有效地用于各种稳定化碳负离子,胺和苯亚磺酸盐的苄基乙酸酯的苄基化反应。