lane)(I), was prepared by the interaction of 2, 2'-dilithiobiphenyl with one equivalent of diphenyldichlorosilane. One of the chlorine atoms appeared to be displaced quite easily by adding the diphenyldichlorosilane to the refluxing ethereal solution of the organolithium compound. To effect ring closure, a reaction temperature higher than that afforded by refluxing ether was employed. The 2, 2'-dilithiobiphenyl was prepared by a halogen-metal ...
