An iron(0)-catalysed cascade synthesis of N-alkylated anilines from allylic or homoallylic alcohols and primary and secondary anilines under hydrosilylation conditions has been developed. Notably, a simple Fe(cod)(CO)3 complex (cod = cycloocta-1,5-diene) was used as a precatalyst under visible light activation in ethanol in the presence of the inexpensive and non-toxic PMHS (polymethylhydrosiloxane) as the hydrosilane source. This methodology is based on a three step-one sequence process involving isomerisation of allylic alcohols/condensation with anilines/reduction reactions.
我们开发了一种
铁(0)催化的级联合成方法,在氢化
硅烷化条件下,从烯丙基醇或均烯丙基醇和伯、仲
苯胺中合成 N-烷基化
苯胺。值得注意的是,在
乙醇中以廉价无毒的 PMHS(聚甲基氢
硅氧烷)作为氢
硅烷源,在可见光活化条件下使用了简单的 Fe(cod)(CO)3(cod =
环辛烷-1,5-二烯)复合物作为前催化剂。该方法基于烯丙基醇异构化/与
苯胺缩合/还原反应的三步一序过程。