3,4-Dihydropyrimidin-2-(1H)-ones were synthesized in high yields by a one-pot cyclocondensation of aldehyde,1,3-dicarbonyl compound,and urea or thiourea using copper o-toluenesulfonate as a catalyst under solvent-free...3,4-Dihydropyrimidin-2-(1H)-ones were synthesized in high yields by a one-pot cyclocondensation of aldehyde,1,3-dicarbonyl compound,and urea or thiourea using copper o-toluenesulfonate as a catalyst under solvent-free conditions at 90℃.Effects of molar ratio of reactants,amount of catalyst,and reaction temperature on the yields of 3,4-dihydropyrimidin-2-(1H)-ones were investigated.The results showed that at the condition of naldehyde∶n1,3-dicarbonyl compounds∶nurea(or thiourea)=1∶1.2∶1.5,1 mol% catalyst(molar percent of aldehyde),2.0 h at 90℃,the yields of products were 51-96%.After reaction,the catalyst could be reused for four times without distinct loss of catalytic activity.展开更多
双吲哚甲烷类化合物(BIAs)是一系列具有很好的生物活性的代谢产物.采用苊醌和取代吲哚为原料,合成2,2-二(1H-吲哚-3-基)-2H-苊-1-酮类化合物,对反应条件进行探索研究,得到了合成该类化合物的一种简单有效的方法.以10%的樟脑磺酸(CSA)为...双吲哚甲烷类化合物(BIAs)是一系列具有很好的生物活性的代谢产物.采用苊醌和取代吲哚为原料,合成2,2-二(1H-吲哚-3-基)-2H-苊-1-酮类化合物,对反应条件进行探索研究,得到了合成该类化合物的一种简单有效的方法.以10%的樟脑磺酸(CSA)为催化剂,无水乙醇为溶剂,在回流条件下反应30min左右,产物收率达到93%以上.产物均经过1 H NMR,13 C NMR,IR,MS和元素分析表征确认.展开更多
文摘3,4-Dihydropyrimidin-2-(1H)-ones were synthesized in high yields by a one-pot cyclocondensation of aldehyde,1,3-dicarbonyl compound,and urea or thiourea using copper o-toluenesulfonate as a catalyst under solvent-free conditions at 90℃.Effects of molar ratio of reactants,amount of catalyst,and reaction temperature on the yields of 3,4-dihydropyrimidin-2-(1H)-ones were investigated.The results showed that at the condition of naldehyde∶n1,3-dicarbonyl compounds∶nurea(or thiourea)=1∶1.2∶1.5,1 mol% catalyst(molar percent of aldehyde),2.0 h at 90℃,the yields of products were 51-96%.After reaction,the catalyst could be reused for four times without distinct loss of catalytic activity.
文摘双吲哚甲烷类化合物(BIAs)是一系列具有很好的生物活性的代谢产物.采用苊醌和取代吲哚为原料,合成2,2-二(1H-吲哚-3-基)-2H-苊-1-酮类化合物,对反应条件进行探索研究,得到了合成该类化合物的一种简单有效的方法.以10%的樟脑磺酸(CSA)为催化剂,无水乙醇为溶剂,在回流条件下反应30min左右,产物收率达到93%以上.产物均经过1 H NMR,13 C NMR,IR,MS和元素分析表征确认.
基金2013年国家级大学生创新创业训练计划项目(201313256001)湖北师范学院硕士研究生创新科研基金项目(1051320130216)+1 种基金National Undergraduate Training Programs for Innovation and Entrepreneurship(201313256001)Postgraduate Innovation Scientific Research Foundation of Hubei Normal University(1051320130216)
