Abstract
Intramolecular cyclodehydration of 3‐arylpropionic acids catalyzed by heteropoly acids was investigated for the first time. Several 3‐arylpropionic acids were refluxed and dehydrated in chlorobenzene in the presence of 0.2 equivalent of heteropoly acids, and 1‐indanones were obtained in good yield. At the same time, intermolecular Friedel–Crafts acylation were observed in this experiment.
Acknowledgment
This study was financially supported in part by the National Natural Science Foundation of China (20372053 and 29972033).