The thermal decomposition of hexamethylsilirane in the presence of selected disubstituted acetylenes (Me3SiCCSiMe3), Me2HSiCCSiMe2H, Me3SiCCCH3, Me3SiCCCMe3, Me3CCCCH3) resulted in Me2Si addition to the CC bonds to give the respective silacyclopropenes. These are thermally stable but are extremely reactive toward atmospheric oxygen and moisture and react readily with methanol and ethanol at room
hexamethylsilirane在选定的二取代的
乙炔的存在(Me中热分解3 SiCCSiMe 3)中,Me 2 HSiCCSiMe 2 H,我3 SiCCCH 3中,Me 3 SiCCCMe 3中,Me 3 CCCCH 3)导致在CC键上加成Me 2 Si,得到相应的
硅杂环
丙烯。它们具有热稳定性,但对大气中的
氧气和湿气具有极强的反应性,并且在室温下容易通过SiC(环)键断裂与
甲醇和
乙醇反应。很高的领域29Si NMR共振(-87至-106 ppm)是
硅环
丙烯环的特征。