Synthesis 2012; 44(15): 2448-2454
DOI: 10.1055/s-0032-1316552
paper
© Georg Thieme Verlag Stuttgart · New York

A New Route to Pyrano[3,2-a]carbazole Ring Systems and Annulated Derivatives Thereof

Shital K. Chattopadhyay*
Department of Chemistry, University of Kalyani, Kalyani-741235, West Bengal, India, Fax: +91(33)25828282   Email: skchatto@yahoo.com
,
Debalina Ghosh
Department of Chemistry, University of Kalyani, Kalyani-741235, West Bengal, India, Fax: +91(33)25828282   Email: skchatto@yahoo.com
,
Poulomi Mondal
Department of Chemistry, University of Kalyani, Kalyani-741235, West Bengal, India, Fax: +91(33)25828282   Email: skchatto@yahoo.com
,
Sanjay K. Ghosh
Department of Chemistry, University of Kalyani, Kalyani-741235, West Bengal, India, Fax: +91(33)25828282   Email: skchatto@yahoo.com
› Author Affiliations
Further Information

Publication History

Received: 02 April 2012

Accepted after revision: 21 May 2012

Publication Date:
29 June 2012 (online)


Abstract

A new protocol based on sequential applications of Claisen rearrangement, olefin isomerisation, ring-closing diene/ enyne metathesis and Diels–Alder reaction has been developed to access pyrano[3,2-a]carbazole and annulated derivatives thereof.