4-Cyclohexylidene-2-(trimethylsilylmethyl)but-2-enal, allylsilane type of linearly conjugated pentadienal, underwent a new self-cyclization reaction to afford 2-methylspiro[4.5]-2-decen-1-one. The reaction of 4-(4-alkylcyclohexylidene)-2-(trimethylsilylmethyl)-2-butenal proceeded stereoselectively.
4-Cyclohexylidene-2-(trimethylsilylmethyl)but-2-enal,烯丙基
硅烷类型的线性共轭
戊二烯,经过新的自环化反应得到2-甲基螺[4.5]-2-
癸烯-1-one。4-(4-烷基亚环己基)-2-(三甲基甲
硅烷基甲基)-
2-丁烯醛的反应立体选择性地进行。