allyl-(1-ethynyl-2(S)-isopropyl-5(R)-methylcyclohexyloxy)-dimethylsilane 在
[ruthenium(II)(η
6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]
2 、
caesium carbonate 、
1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazolium chloride 作用下,
以
甲苯 为溶剂,
反应 16.0h,
以76%的产率得到7(S)-isopropyl-2,2,10(R)-trimethyl-5-vinyl-1-oxa-2-silaspiro[5,5]undec-4-ene