1,3-Digermacyclobutanes with exocyclic CP and CPS double bonds
作者:Petronela Maria Petrar、Gabriela Nemes、Ioan Silaghi-Dumitrescu、Henri Ranaivonjatovo、Heinz Gornitzka、Jean Escudié
DOI:10.1039/b708308d
日期:——
New 1,3-digermacyclobutanes, with two exocyclicC=PMes* bonds, and the corresponding first bis(methylenethioxo)phosphoranes with C=P(S)Mes* moieties have been synthesized.
fluorenylidene germenes 5 and 6 substituted on germanium with two bulky bisyls [(Me3Si)2CH] or with a bisyl and a mesityl group have been synthesized by dehydrofluorination of the corresponding fluorogermanes by tert-butyllithium. The ditert-butylfluorenylidene germene 7 could not be obtained by this route, but its lithio precursor 8 can be used as its synthetic equivalent.