Controlled ‘decomposition’ of “kinetic” higher order cyanocuprates: A new route to unsymmetrical biaryls
作者:Bruce H. Lipshutz、Konstantin Seigmann、Emiliano Garcia
DOI:10.1016/s0040-4020(01)88522-7
日期:1992.3
(temperature and mode of formation), unprecedented “kinetic” higher order cyanocuprates can be generated. Under oxidative conditins, their chemistry is unique when compared with constitutionally identical reagents formulated in the usual manner. Employing mixed diaryl reagents ArAr′Cu(CN)Li2, prepared from ArLi, Ar′Li, and CuCN, unsymmetrical biaryls (Ar-Ar′) can be realized with remarkable selectivity
通过控制两个关键的反应参数(温度和形成方式),可以生成空前的“动力学”高阶氰铜酸盐。在氧化conditins下,与以常规方式配制的结构相同的试剂相比,它们的化学性质是独特的。使用由ArLi,Ar'Li和CuCN制备的混合二芳基试剂ArAr'Cu(CN)Li 2,可以以很高的化学收率和可预测的方式实现非对称联芳基(Ar-Ar')的显着选择性。