An efficient and diastereoselective synthetic method for preparing (E)-3-styrylchromones has been developed by the reaction of chromone-3-carboxaldehyde with phenylacetic acids in the presence of potassium tert-butoxide under classical heating conditions or microwave irradiation. The Knoevenagel-type reaction followed by a decarboxylation was faster under microwave conditions.
已经开发了一种高效且具有二面体选择性的合成方法,用于制备(E)-3-
苯乙烯基
色酮,该方法通过在经典加热条件或微波辐射下,将
色酮-3-羧醛与
苯乙酸反应,并使用叔丁氧化
钾催化。相较于经典加热条件,微波条件下的Knoevenagel反应后续脱羧化反应更快。