2-lithio-2-cyclohexen-1-one ethylene ketal 、
(E)-3,4-dimethyl-6-trimethylsilyl-4-hexenal 、 alkaline earth salt of/the/ methylsulfuric acid 生成 syn-(E)-2-(1'-methoxy-3',4'-dimethyl-6'-trimethylsilyl-4'-hexenyl)-2-cyclohexenone 、 anti-(E)-2-(1'-methoxy-3',4'-dimethyl-6'-trimethylsilyl-4'-hexenyl)-2-cyclohexenone