以3,4-二甲氧基-苯甲醛和对羟基苯乙酮为原料,无水乙醇为溶剂,HCl气体为催化剂,在超声作用下,经Claisen-Schmidt缩合反应合成了3,4-二甲氧基-4′-羟基查尔酮.产物结构经IR和1H NMR进行了表征,在2种原料摩尔比1∶1投料比条件下,优化的合成条件为超声输出功率240W,反应温度30℃,反应时间20min,产率达到92.1％,比传统方法反应时间短、操作简便、产率高.
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