Synthesis 2012; 44(18): 2947-2958
DOI: 10.1055/s-0032-1316751
paper
© Georg Thieme Verlag Stuttgart · New York

An Imine-Based Route to Polycyclic Chlorinated ε-Lactams by Formation of C–C Bonds as Key Steps

Fabian Brockmeyer
Institut für Reine und Angewandte Chemie, Carl von Ossietzky Universität Oldenburg, P. O. Box 2503, 26111 Oldenburg, Germany, Email: juergen.martens@uni-oldenburg.de
,
Timo Stalling
Institut für Reine und Angewandte Chemie, Carl von Ossietzky Universität Oldenburg, P. O. Box 2503, 26111 Oldenburg, Germany, Email: juergen.martens@uni-oldenburg.de
,
Jürgen Martens*
Institut für Reine und Angewandte Chemie, Carl von Ossietzky Universität Oldenburg, P. O. Box 2503, 26111 Oldenburg, Germany, Email: juergen.martens@uni-oldenburg.de
› Author Affiliations
Further Information

Publication History

Received: 16 May 2012

Accepted after revision: 23 June 2012

Publication Date:
30 July 2012 (online)


Abstract

A two-step sequence for the conversion of heterocyclic imines to saturated and unsaturated polycyclic chlorinated ε-lactams is disclosed. In the first step, an acyl chloride addition followed by a substitution is used to achieve unsaturated methoxyamides. The final lactamization to two different classes of polycyclic ε-lactams via formation of a C–C bond is realized by the use of metal chlorides as Lewis acid and as a source of chloride. The potential of the ε-lactams in subsequent reactions is demonstrated by an elimination reaction.