Tandem Palladium(0) and Palladium(II)-Catalyzed Allylic Alkylation Through Complementary Redox Cycles
作者:Barry M. Trost、David A. Thaisrivongs、Max M. Hansmann
DOI:10.1002/anie.201204251
日期:2012.11.12
Here it goes again: A tandem catalytic process effects sequential Pd0‐catalyzed allylic alkylations through leaving group ionization and PdII‐catalyzed allylic alkylations by CH activation. By employing an oxidative trigger to convert the catalytic species from Pd0 into PdII, both transformations can be conducted in a single reaction vessel using the same precatalyst. This allows for the selective
它再次发生:串联催化过程通过CH活化使基团电离和Pd II催化的烯丙基烷基化,从而实现顺序的Pd 0催化的烯丙基烷基化。通过使用氧化触发将催化物种从Pd 0转化为Pd II,可以使用相同的预催化剂在单个反应容器中进行两种转化。这允许选择性引入否则难以区分的烯丙基。