Sulfur-Promoted Access to 3-Arylquinoxalin-2-ones by Oxidative Coupling of o-Phenylenediamines with Arylacetates
作者:Le Anh Nguyen、Thi Yen Tran、Quoc Anh Ngo、Dinh Hung Mac、Pascal Retailleau、Thanh Binh Nguyen
DOI:10.1021/acs.orglett.4c01624
日期:2024.7.26
We disclose the synthesis of 3-arylquinoxalin-2-ones from o-phenylenediamines and readily available arylacetates. The method harnesses the selective oxidative property of elemental sulfur in the presence of amine base catalyst and DMSO. The reactions are operationally simple and tolerate a wide range of functional groups.