Reactions of [L2Rh(acac)] (L = alkene or phosphine) with B2cat3 yield the zwitterionic complexes [L2Rh(η6-catBcat)] and [(acac)Bcat] cleanly; [(dppm)Rh(η6-catBcat)], the X-ray structure of which is reported, is an excellent catalyst for the diboration of vinylarenes and unstrained internal alkenes cis- and trans-stilbene and trans-β-methylstyrene.
[
L2Rh(acac)](L = 烯烃或膦)与B2cat3反应生成净化的两性离子配合物[
L2Rh(η6-catBcat)]和[(acac)Bcat];其中,[(dppm)Rh(η6-catBcat)]的X射线结构已被报道,是一种优异的催化剂,用于
乙烯基芳烃和不饱和内烯烃(顺式和反式
二苯乙烯以及反式β-
甲基苯乙烯)的二
硼化反应。