摘要
研究了乙酰乙酸乙酯与 1 ,2 -丙二醇在四氯化锡作用下经过缩酮反应生成苹果酯 B的最佳条件 .实验结果表明 :乙酰乙酸乙酯∶1 ,2 -丙二醇 =1∶1 .2 (摩尔比 ) ;乙酰乙酸乙酯∶催化剂 =1∶0 .0 1 5(摩尔比 ) ,反应在 0 .
Apple ester B was synthesized by reaction of ethyl acetyl acetate and 1,2 propanediol,and SnCl 4·5H 2 O as catatlyst. The optimum condition was found out as follows: the ratio of ethyl acetyl acetate to 1,2 propanediol to SnCl 4·5H 2 O was 1mol to 1.2 mol to 0.015 mol. The reaction time is about 0.5h.
