7,9,9-trimethyl-1,4-dithiaspiro[4,5]dec-6-ene

2-溴-3,5,5-三甲基-2-环己酮

1'p.methoxyphenyl 1'-cyano 1,3,5,5-tetramethyl 2-cyclohexen 1-ol

5,5-二甲基-3-溴环己-2-烯酮

甲基锂