A modified Dakin‐West one‐pot, four‐component condensation of an aryl aldehyde, aryl ketone, acetyl chloride and acetonitrile in the presence of silica supported perchloric acid as an active, inexpensive, recoverable and recyclable catalyst is reported for the synthesis of β‐acetamido ketones under mechanical stirring and ultrasonic irradiation conditions. This system has advantages of short reaction
据报道,在
硅胶负载的
高氯酸存在下,一种改良的Dakin-West一锅四组分缩合芳基醛,芳基酮,
乙酰氯和
乙腈作为一种活性,廉价,可回收和可循环使用的催化剂,可以合成β -乙酰
氨基酮在机械搅拌和超声辐射条件下。该系统的优点是反应时间短,收率良好至优异,并且具有进行大规模反应的能力。与在回流条件下的反应相比,超声的使用增加了反应速率。