Synlett 2014; 25(13): 1926-1936
DOI: 10.1055/s-0034-1378329
letter
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Pentasubstituted Pyrroles via Catalyst-Free Multicomponent Reactions

Shaik Karamthulla
Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India   Fax: +91(612)2277383   Email: lokman@iitp.ac.in
,
Suman Pal
Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India   Fax: +91(612)2277383   Email: lokman@iitp.ac.in
,
Md. Nasim Khan
Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India   Fax: +91(612)2277383   Email: lokman@iitp.ac.in
,
Lokman H. Choudhury*
Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India   Fax: +91(612)2277383   Email: lokman@iitp.ac.in
› Author Affiliations
Further Information

Publication History

Received: 14 March 2014

Accepted after revision: 23 May 2014

Publication Date:
10 July 2014 (online)


Abstract

A facile and versatile catalyst-free method for the preparation of a wide range of pentasubstituted pyrroles has been reported using four-component reactions of arylglyoxal monohydrate, β-keto esters, amines, and various cyclic 1,3-dicarbonyls under mild reaction conditions. Employing this methodology, pseudo seven-component reactions have also been achieved in the case of p-phenylenediamine to provide conjugated bispyrroles with arene spacers.

Supporting Information