Cinnamic acid was synthesized by Perkin reaction in anhydrous potassium carbonate as catalyst,ionic liquid as solvent.The optimal process conditions were obtained as follows:n（PhCHO）:n（Ac2O）:n（K2CO3）=1∶1.2∶1.1...Cinnamic acid was synthesized by Perkin reaction in anhydrous potassium carbonate as catalyst,ionic liquid as solvent.The optimal process conditions were obtained as follows:n（PhCHO）:n（Ac2O）:n（K2CO3）=1∶1.2∶1.1,and refluence time was 2h when the refluence temperature was 160℃.The yield of cinnamic acid could reach 80.8%.展开更多
糠醛、乙酸酐为原料,用4-二甲氨基吡啶(DMAP)作催化剂,在吡啶存在下,经Perk in反应一步合成了α-呋喃丙烯酸。考察了原料配比、反应温度和时间以及吡啶和DMAP用量对产物收率的影响,优化的工艺条件为:n(糠醛)∶n(乙酸酐)∶n(DMAP)∶n(吡...糠醛、乙酸酐为原料,用4-二甲氨基吡啶(DMAP)作催化剂,在吡啶存在下,经Perk in反应一步合成了α-呋喃丙烯酸。考察了原料配比、反应温度和时间以及吡啶和DMAP用量对产物收率的影响,优化的工艺条件为:n(糠醛)∶n(乙酸酐)∶n(DMAP)∶n(吡啶)=1∶3∶0.05∶1,反应温度140℃,反应时间30 m in,产物最终收率可达89.2%。展开更多
文摘Cinnamic acid was synthesized by Perkin reaction in anhydrous potassium carbonate as catalyst,ionic liquid as solvent.The optimal process conditions were obtained as follows:n（PhCHO）:n（Ac2O）:n（K2CO3）=1∶1.2∶1.1,and refluence time was 2h when the refluence temperature was 160℃.The yield of cinnamic acid could reach 80.8%.
文摘糠醛、乙酸酐为原料,用4-二甲氨基吡啶(DMAP)作催化剂,在吡啶存在下,经Perk in反应一步合成了α-呋喃丙烯酸。考察了原料配比、反应温度和时间以及吡啶和DMAP用量对产物收率的影响,优化的工艺条件为:n(糠醛)∶n(乙酸酐)∶n(DMAP)∶n(吡啶)=1∶3∶0.05∶1,反应温度140℃,反应时间30 m in,产物最终收率可达89.2%。
