Cationic Palladium-Catalyzed [5 + 2] Annulation of 2-Acylmethoxyarylboronic Acids and Allenoates: Synthesis of 1-Benzoxepine Derivatives
作者:Xufen Yu、Xiyan Lu
DOI:10.1021/jo200672w
日期:2011.8.5
The 1-benzoxepine derivatives were synthesized conveniently by cationicpalladium-catalyzed [5 + 2] annulation reaction of 2-acylmethoxyarylboronic acids with allenoates in high yields. This annulation involves the intramolecular nucleophilic addition to ketones without the formation of π-allylpalladium species.