Insertion de germylenes dans la liaison etain—carbone. Germylenes a substituants perhalogenes

The electrophilic germylenes GeCl₂ and EtGeCl react with allyl- and (trichloromethyl)-trialkylstannanes with insertion in the SnC bond. The germylstannanes obtained give an α-elimination reaction leading to R₃SnCl and divalent species of germanium with an allyl or trichloromethyl substituent. The alkyl(dichloromethyl)germylenes are also obtained by an α-elimination reaction from the alkyl(dichloromethyl)methoxyhydrogermanes.