Ethyl 3-[2-(2-bromophenyl)ethyl]-2,2-dimethyl-4-methylenecyclohexanecarboxylate 生成 (2R,4aS,11aR)-1,1-Dimethyl-2,3,4,4a,5,10,11,11a-octahydro-1H-dibenzo[a,d]cycloheptene-2-carboxylic acid 、 2,2,4-Trimethyl-3-phenethyl-cyclohex-3-enecarboxylic acid 、 2,2-Dimethyl-4-methylene-3-phenethyl-cyclohexanecarboxylic acid