(1R,2S)-4-Hydroxy-4-(4-methoxy-phenyl)-2-methyl-cyclohexanecarboxylic acid ethyl ester 在
硫酸 作用下,
生成 (1R,6S)-4-(4-Methoxy-phenyl)-6-methyl-cyclohex-3-enecarboxylic acid 、 (1R,2S)-4-(4-Methoxy-phenyl)-2-methyl-cyclohex-3-enecarboxylic acid 、
ethyl 4-(4-methoxyphenyl)-cis-2-methyl-3-cyclohexene-1-carboxylate 、
ethyl 4-(4-methoxyphenyl)-cis-2-methyl-4-cyclohexene-1-carboxylate