Isocyanates undergo a 1/1 oxidative coupling reaction with 1,2-dienes and Lig-Ni0 systems to give azanickelacyclopentanones. The coupling to form the nickela complexes proceeds in such a way that the exo-methylene group is conjugated with the carbonyl group. The influence of the ligands and the temperature on the regioselectivity of the CC coupling is reported.
异氰酸酯与1,2-二烯和Lig-Ni 0系统进行1/1氧化偶联反应,得到氮杂尼克
环戊酮。进行偶联以形成尼古拉配合物,使得外亚甲基与羰基共轭。报道了
配体和温度对CC偶联的区域选择性的影响。