silacyclobutene fused ring systems are easily prepared via a benzynezirconocene intermediate by means of thermolysis of Cp2ZrPh2 in the presence of bis(alkynyl)phosphanes or silanes. These polyunsaturated systems are the source of a variety of new mono- or tricyclic heterocycles incorporating either one or two heteroatoms.
在双(炔基)膦或
硅烷的存在下,通过Cp 2 ZrPh 2的热解,可通过苯并
锆茂新中间体容易地制备苯并-
氧化锆环
己二烯-膦或
硅环丁烯稠合的环系。这些多不饱和体系是结合一个或两个杂原子的各种新的单环或
三环杂环的来源。