【摘要】 将铌酸应用于催化缩酮反应 ,以环己酮和 1 ,2 -丙二醇的缩酮反应为探针 ,详细探索了影响缩合反应的各种因素 ,并得出了铌酸催化环己酮与丙二醇反应的最佳条件 :mol环己酮 ∶ mol丙二醇 =1∶ 1 .5 ,环己烷作带水剂 ,环己烷和铌酸催化剂的用量分别为反应物总体积、总质量的 35 %和 1 .2 % ,回流搅拌反应 3.5 h,产品环己酮 1 ,2 -丙二醇缩酮的总收率为 73.5 %更多还原

【Abstract】 Catalytic synthesis of ketol by niobic acid was studied using the condensation of cyclohexanone with 1,2 propanediol as a probe reaction. The condensation reaction condition was optimized as follows: mol cycloher anone ∶mol 1,2 propanekiol =1∶1.5 and the amount of cyclohexane and niobic acid was 35%(volume), 1.2%(mass) respectively, after refluxing for 3.5h the total yield of the product cyclohexanone 1,2 propanediol ketol was 73.5%.更多还原