A C2-symmetric nickel diamine complex as an asymmetric catalyst for enecarbamate additions to butane-2,3-dione
作者:John S. Fossey、Ryosuke Matsubara、Paulo Vital、Shū Kobayashi
DOI:10.1039/b505404d
日期:——
Butane-2,3-dione was activated towards nucleophilic addition of enecarbamates by a series of metal triflate complexes of a C2-symmetric diamine to give stereogenic, aldol-like, t-alcohols, a novel nickel(II) triflate complex was identified as a good catalyst for this asymmetric transformation, and an aquo nickel(II) complex was identified by XRD techniques.
一系列C2对称的二胺金属三氟甲磺酸盐络合物将丁烷2,3-二酮活化成亲烯加成的氨基甲酸酯,生成立体异构的醛醇样t醇,一种新型的三氟甲磺酸镍(II)络合物被确定为是这种不对称转变的良好催化剂,并且通过XRD技术鉴定了水合镍(II)配合物。