tert-butyl (3-methyl-6-carbomethoxy-2-cyclohexen-1-yl)-carbamate 在
乙醚 作用下,
以
sodium hydroxide 为溶剂,
以3.5 g (74% of theory) of tert-butyl 3-methyl-6-carboxy-2-cyclohexen-1-yl-carbamate of melting point 132°-136° C. are obtained的产率得到tert-butyl (3-methyl-6-carboxy-2-cyclohexen-1-yl)-carbamate