A convenient, catalyst-free protocol for the quantitative synthesis of fused chromeno[4,3-b]quinolin-6-ones has been developed by simple one-pot reaction of substituted anilines with 4-chloro-3-formylcoumarin using ultrasound irradiation. The protocol offers the advantages of mild reaction conditions, short reaction times and high yields.
通过简单的分步反应将取代
苯胺与4-
氯-3-醛基
香豆素在超声波照射下进行融合,开发了一种无需
催化剂的方便程序,用于定量合成融合色
烯[4,3-b]
喹啉-6-
酮。该方案具有反应条件温和、反应时间短和产率高的优点。