The cothermolysis of benzoyl(tert-butyl)bis(trimethylsilyl)silane with 2,3-dimethylbutadiene in a sealed tube at 140 °C for 24 h afforded cis- and trans-1-tert-butyl-4,5-dimethyl-2-phenyl-2-(trimethylsiloxy)-1-(trimethylsilyl)-1-silacyclohex-4-ene (2 and 3) in a ratio of approximately 1:1 in 66% combined yield. When cis-silacyclohex-4-ene 2 was heated in a sealed tube at 250 °C for 24 h, dyotropic
苯甲酰基(叔丁基)双(三甲基甲
硅烷基)
硅烷与
2,3-二甲基丁二烯在密闭管中于140°C共热解24小时,得到顺式和反式-1-叔丁基-4,5-二甲基-2 -苯基-2-(三甲基甲
硅烷氧基)-1-(三甲基甲
硅烷基)-1-silacyclohex-4-ene(2和3)的比例约为1:1,总收率为66%。当将顺式-silacyclohex-4-ene 2在密封管中于250°C加热24 h时,发生正离子环收缩,得到1-[(叔丁基)(三甲基甲
硅烷氧基)(三甲基甲
硅烷基)甲
硅烷基] -3,4 -二甲基-1-苯基环戊-3-烯(4),但不是反式-2-叔丁基-4,5-二甲基-2-苯基-1-(三甲基甲
硅烷氧基)-1-(三甲基甲
硅烷基)-1-silacyclohex-4-ene(6)。然而,在相同条件下反式-silacyclohex-4-ene 3的热解得到两种产物,1-甲
硅烷基-1-苯基环戊-3-烯4和反式-1-叔丁基-4