利用两种串联催化体系,Cat.Ⅰ/Cat.Ⅱ和Cat.I/Cat.Ⅲ{Cat.Ⅰ:[ArNCH-C8H3(CH2)2(C6H5)O]2ZrBn2;Cat.Ⅱ:(η^5-C5Me4)Si(Me)2N^tBuT......