Synlett 2014; 25(4): 495-500
DOI: 10.1055/s-0033-1340478
letter
© Georg Thieme Verlag Stuttgart · New York

A Mild and Simple Method for the Synthesis of Substituted Phenazines

Harpreet Kour
a   Department of Chemistry, University of Jammu, Jammu 180006, India   Fax: +91(191)2431365   Email: paul7@rediffmail.com
,
Satya Paul*
a   Department of Chemistry, University of Jammu, Jammu 180006, India   Fax: +91(191)2431365   Email: paul7@rediffmail.com
,
Parvinder Pal Singh
b   Medicinal Chemistry Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
,
Rajive Gupta
a   Department of Chemistry, University of Jammu, Jammu 180006, India   Fax: +91(191)2431365   Email: paul7@rediffmail.com
› Author Affiliations
Further Information

Publication History

Received: 04 September 2013

Accepted after revision: 23 November 2013

Publication Date:
20 December 2013 (online)


Abstract

A mild, simple, and general method has been developed for the synthesis of phenazines by cross-coupling of benzoquinones with o-phenylenediamines. Benzoquinones and o-phenylenediamines reacted smoothly to give the corresponding cross-coupled products in good to excellent yields. 1,4-Naphthoquinone also coupled with o-phenylenediamines in the presence of copper acetate at 50 °C to give the corresponding benzo[a]phenazines. All reactions could be carried out under air.

Supporting Information