Hexa-n-butyl- and hexaisopentyldigermoxanes but not hexaphenyldigermoxane react with O-trimethylsilyl N,N-diethylcarbamate and trimethylsilyl piperidinocarboxylate to give O-triorganylgermyl carbamates.
A new method was developed for the synthesis of O-trialkylgermylcarbamates by the aminocarboxylation of organylhalogermanes with carbon dioxide and secondary amines.