Synthesis 2007(2): 243-250  
DOI: 10.1055/s-2006-958947
PAPER
© Georg Thieme Verlag Stuttgart · New York

Palladium-Catalyzed N-Arylation Reactions with Aziridine and Azetidine

Bernhard Witulski*, Stefan Senft, Jordi Bonet, Oliver Jost
Johannes Gutenberg Universität-Mainz, Institut für Organische Chemie, Duesbergweg 10-14, 55099 Mainz, Germany
Fax: +49(6131)3926777; e-Mail: witulski@uni-mainz.de;
Further Information

Publication History

Received 3 August 2006
Publication Date:
14 December 2006 (online)

Abstract

Studies on the viability of palladium-catalyzed cross-coupling reactions of aryl- or hetaryl bromides with the parent aziridine or azetidine showed that a wide range of N-arylaziridines and N-arylazetidines are accessible by this method. Ring cleavage of the N-arylaziridines or -azetidines thus produced does not occur under the applied reaction conditions. The synthetic utility of the method is illustrated by examples of double N-arylations with either aziridine or azetidine.

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No efforts were undertaken to optimize the reaction regarding the amount of aziridine, because of its high volatility (bp 57 °C/780 Torr).