The Pd-benzothiazol-2-ylidene complex I was found to be a chemoselective catalyst for the Tsuji-Trost allylation of active methylene compounds carried out under neutral conditions and using carbonates as allylating agents. The proposed protocol consists in a simplified procedure adopting an in situ prepared catalyst from Pd2dba3 and 3-methylbenzothiazolium salt V as precursors. A comparison of the
发现Pd-
苯并噻唑-2-亚烷基配合物I是在中性条件下使用
碳酸盐作为烯丙基化剂进行的活性亚甲基化合物的Tsuji-Trost烯丙基化的
化学选择性催化剂。拟议的方案包括采用从Pd2dba3和3-甲基
苯并噻唑鎓盐V原位制备的催化剂作为前体的简化程序。还提出了
苯并噻唑卡宾与膦和类似的
咪唑鎓卡宾
配体的性能比较。