Synthesis of 1‐Indanones via Intramolecular Cyclodehydration of 3‐Arylpropionic Acids Catalyzed by Heteropoly Acid as Heterogeneous Catalyst
摘要:
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.