Synthesis 2015; 47(01): 124-128
DOI: 10.1055/s-0034-1379022
paper
© Georg Thieme Verlag Stuttgart · New York

Bismuth(III) Chloride Catalyzed Intramolecular Hetero-Diels–Alder Reaction: Access to cis-Fused Angular Hexahydrobenzo[c]acridines

Gowravaram Sabitha*
Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India   Fax: +91(40)27160512   Email: gowravaramsr@yahoo.com   Email: sabitha@iict.res.in
,
Kontham Shankaraiah
Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India   Fax: +91(40)27160512   Email: gowravaramsr@yahoo.com   Email: sabitha@iict.res.in
,
Kancherla Sindhu
Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India   Fax: +91(40)27160512   Email: gowravaramsr@yahoo.com   Email: sabitha@iict.res.in
,
Bejawada Madhavi Latha
Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India   Fax: +91(40)27160512   Email: gowravaramsr@yahoo.com   Email: sabitha@iict.res.in
› Author Affiliations
Further Information

Publication History

Received: 23 April 2014

Accepted after revision: 04 August 2014

Publication Date:
06 October 2014 (online)


Abstract

New polycyclic hexahydrobenzo[c]acridines were synthesized in excellent yields by intramolecular [4+2]-cycloaddition reactions of aldimines derived from aromatic amines and 2-(4-methylpent-3-en-1-yl)benzaldehyde in acetonitrile in the presence of 10 mol% of bismuth(III) chloride. The reaction is highly diastereoselective, giving cis-fused benzoacridine derivatives preferentially.

Supporting Information