ethyl 7-methyl-9-oxospiro[4.5]dec-7-ene-6-carboxylate 在
甲醇 、 sodium tetrahydroborate 、 cerium(III) chloride 作用下,
反应 5.67h,
生成
trans-ethyl 9-hydroxy-7-methylspiro[4.5]dec-7-ene-6-carboxylate 、 cis-ethyl 9-hydroxy-7-methylspiro[4.5]dec-7-ene-6-carboxylate