CaO催化柠檬醛一步合成脱氢柠檬醛的初步研究

Exploration of One-step Synthetic Route from Citral to Dehydrocitral Catalyzed by CaO

环己烷为溶剂,60℃和N2保护下,CaO可催化柠檬醛(3,7-二甲基-2,6=二烯-辛醛-1;I)脱氢生成柠檬醛(3,7–二甲基-2,4,6-三烯-辛醛-1;II)。当CaO/柠檬醛质量比为2时,目标产物脱氢柠檬醛得率33.4%。

By using cyclohexane as solvent and N2 gas as protective gas, citral （3,7-timethyl-2,6-diene-octanal-1） was able to be chemically converted into dehydrocitral （3,7-demethyl-2,4,6 -triene-octanal-1） over CaO at 60℃. The total yield of dehydrocitral could be optimized to 33.4 % while the selected mass ratio of CaO/citral was 2.