Solid acid ferric sulphate Fe2（SO4）3 was prepared and used for the study of the catalytic synthesis of iso-amyl propionate.The optimun reaction conditions were follows:the ratio of amount of substance n（iso-amylalc...Solid acid ferric sulphate Fe2（SO4）3 was prepared and used for the study of the catalytic synthesis of iso-amyl propionate.The optimun reaction conditions were follows:the ratio of amount of substance n（iso-amylalcohol）:n（propionic acid）=1.5,the reaction time 2h,the catalyst quantity 1.5g,and dewatering solvent toluene 10ml.The yield was 97.2% under the optimum reaction conditions.The catalyst being of high catalytic activity for the esterification reactions was prepared very easily and could be used repeatedly.展开更多
Butyl butyrate was synthesized by reacting butyric acid with butanol,with ceric sulfate as a catalyst.The effects of the reaction time,the a the of catalyst,amount ratio of alcohol/acid and the dehydrater on esterific...Butyl butyrate was synthesized by reacting butyric acid with butanol,with ceric sulfate as a catalyst.The effects of the reaction time,the a the of catalyst,amount ratio of alcohol/acid and the dehydrater on esterification rate were discussed.Experimental results showed esterification rate was up to 98 5% under the optimum reaction conditions.展开更多
Knoevenagel condensation reaction of aromatic aldehydes with active methylene compounds like ethyl cyanoacetate(or malononitrile) proceeds smoothly in water in the presence of 8mol% of diammonium hydrogen phosphate an...Knoevenagel condensation reaction of aromatic aldehydes with active methylene compounds like ethyl cyanoacetate(or malononitrile) proceeds smoothly in water in the presence of 8mol% of diammonium hydrogen phosphate and 2mol% TEBA.The reactions were carried out at room temperature with very simple workup procedure and high yields.展开更多
文摘Solid acid ferric sulphate Fe2（SO4）3 was prepared and used for the study of the catalytic synthesis of iso-amyl propionate.The optimun reaction conditions were follows:the ratio of amount of substance n（iso-amylalcohol）:n（propionic acid）=1.5,the reaction time 2h,the catalyst quantity 1.5g,and dewatering solvent toluene 10ml.The yield was 97.2% under the optimum reaction conditions.The catalyst being of high catalytic activity for the esterification reactions was prepared very easily and could be used repeatedly.
文摘Butyl butyrate was synthesized by reacting butyric acid with butanol,with ceric sulfate as a catalyst.The effects of the reaction time,the a the of catalyst,amount ratio of alcohol/acid and the dehydrater on esterification rate were discussed.Experimental results showed esterification rate was up to 98 5% under the optimum reaction conditions.
文摘Knoevenagel condensation reaction of aromatic aldehydes with active methylene compounds like ethyl cyanoacetate(or malononitrile) proceeds smoothly in water in the presence of 8mol% of diammonium hydrogen phosphate and 2mol% TEBA.The reactions were carried out at room temperature with very simple workup procedure and high yields.
