四氯化锡催化乙酸酯的合成研究

四氯化锡取代浓硫酸作为酯化催化剂 ,在乙酸异戊酯、乙酸正戊酯、乙酸正丁酯的合成中显示出很好的催化效果 ,反应 1h产率都可达 90 %以上。而催化乙酸仲丁酯的合成效果不理想 ,当酸、醇和催化剂的摩尔比为 1∶0 8∶0 0 1时 ,130℃反应 2h产率仅达 6 0 8%。

Study on the catalytic synthesis of acetates by tin te trachloride

Tin tetrachloride can be used as catalyst for esterification reaction instead of sulfuric acid and it shows fine catalytic effect for the synthesis of isoamyl acetate, n amyl acetate and n butyl acetate.The yield can all get to 90% at reaction for 1 h.But the result isn't well on the occasion of the sec bytyl acetate by tin tetrachloride,when the molar ratio of the acid,alcohol and the catalyst is 1∶0.8∶0.01,reaction at 130 ℃ for 2 h,the yield is 60.8% only.