2-Methyl cyclohexanone is condensed with dimethyl succinate in the presence of potassium tertiary butoxide giving a solid mixture of isomers of the corresponding alkylidene and alkenyl half-esters. On alkaline hydrolysis this gives β-carboxy-β-(2-methyl cyclohex-1-enyl)propionic acid. The keto-ester obtained by cyclization of the half-ester yielded the corresponding unsaturated ketone after acid hydrolysis
在
叔丁醇钾存在下,
2-甲基环己酮与
琥珀酸二甲酯缩合,得到相应亚烷基和链烯基半酯的异构体的固体混合物。碱性
水解生成β-羧基-β-(2-甲基
环己-1-烯基)
丙酸。将半酯环化得到的
酮酯经酸
水解脱羧得到相应的不饱和酮。
酮酯的还原提供相应的α,β-不饱和酯。在
氧化铂的存在下,不饱和酮和酯都容易氢化成相应的饱和酮和酯。