Thermolysis of 1,1-dimesityl-3-phenyl-2-trimethylsilyl-1-silacyclopropene: Silylene transfer reactions to 1,4-bis(silyl)butadiynes

Article abstract of DOI:10.1016/S0022-328X(97)00355-0

The cothermolysis of 1,1-dimesityl-3-phenyl-2-trimethylsilyl-1-silacyclopropene (1) with 1,4-bis(triethylsilyl)- and 1,4-bis(triethylsilyl)butadiyne at 250°C for 24 h afforded 1,1-dimesityl-3-silyl-2-silylethynyl-1-silacyclopropenes (3 and 5) and dimesitylbis(silylethynyl)silanes (4 and 6), respectively. The thermolysis of silacyclopropene 3 under the same conditions cleanly produced an isomerization product 4.