Synthesis of 3‐Unsubstituted Phthalides from Aryl Amides and Paraformaldehyde via Ruthenium(II)‐Catalyzed C–H Activation
作者:Chao Zhou、Junqi Zhao、Wenkun Chen、Mukhtar Imerhasan、Jun Wang
DOI:10.1002/ejoc.202001160
日期:2020.11.8
A straightforward and convenient route has been developed for the synthesis of 3‐unsubstituted phthalide derivatives from aryl amides and paraformaldehyde by ruthenium(II)‐catalyzedC–Hactivation. The reaction proceeds through tandem ortho‐hydroxymethylation of aryl amide and subsequent intramolecular lactonization.