4,5,5-trimethylcyclohex-2-en-1-one 、 6-[(4-Bromo-2-tert-butyl-3-dimethylsilyloxy-5-methoxyphenyl)methyl]-5,5-dimethylcyclohex-2-en-1-one 以affording 0.337 g (59%) of the less polar trans diastereomer as a colorless, oily solid的产率得到trans-6-[2'-(tert-Butyl)dimethylsilyloxy-4'-bromo-5'-methoxyphenyl]methyl-4,5,5-trimethylcyclohex-2-en-1-one