反应详情

Under the same conditions as in Example 1, 116 g (1.0 mol) of methyl acetoacetate in a mixture of 520 ml of methylene chloride and 30 ml of methyl ethyl ketone were reacted with 77.8 g (1.05 mol) of calcium hydroxide and 176.7 g (1.1 mol) of cyclohexylacetyl chloride. The subsequent reaction time after the ammonia had been metered in was 6 hours at a pH of 9.5. This gave 196 g (GC purity 75.0%) of methyl 4-cyclohexylacetoacetate (yield 74.5%).