Reaction of Vinyl Epoxides with Palladium-Switchable Bisnucleophiles: Synthesis of Carbocycles
作者:Ana M. Castaño、María Méndez、María Ruano、Antonio M. Echavarren
DOI:10.1021/jo0056850
日期:2001.1.1
The selective activation of substrates I, potential bisnucleophiles, was achieved by using different palladium catalysts. The synthetic potential of this strategy has been demonstrated in the regiodivergent synthesis of carbocycles from substrates of type I, bearing malonate-type pronucleophiles and an alkenyl stannane, with vinyl epoxides. A selective palladium-catalyzed reaction of I with the vinyl
通过使用不同的钯催化剂,可以实现底物I(潜在的双亲核试剂)的选择性活化。该策略的合成潜力已在I型底物的位置发散性合成中得到证明,其中I型底物带有丙二酸酯型前亲核试剂和烯基锡烷,并带有乙烯基环氧。I与乙烯基环氧化物的选择性钯催化的反应产生了烯丙基醇,其被活化为碳酸盐后,通过第二次钯催化的反应而形成环化产物。不含膦或a作为配体的钯催化剂有利于金属转移过程。另一方面,