2,2-dimethyl-1-(phenylthio)-1-(trimethylsilyl)-4-pentanone

异丙叉丙酮

4,4-dimethyl-2-oxocyclopentyl 4-methylbenzenesulfonate

4-chloro-2,2-dimethylpent-4-enal

4-bromo-2,2-dimethylpent-4-enal