Synlett 2007(11): 1763-1766  
DOI: 10.1055/s-2007-982562
CLUSTER
© Georg Thieme Verlag Stuttgart · New York

Gold-Catalyzed Cyclization of N-Alkynyl Carbamates

A. Stephen K. Hashmi*, Ralph Salathé, Wolfgang Frey
Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
Fax: +49(711)68564330; e-Mail: hashmi@hashmi.de;
Further Information

Publication History

Received 1 March 2007
Publication Date:
25 June 2007 (online)

Abstract

Six different N-alkynyl carbamates containing Boc groups were prepared. Their gold(I)-catalyzed cyclization to ­oxazolinones proceeded radily at room temperature or even lower temperatures.

1

New address: A. S. K. Hashmi, Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.

16

CCDC 638182 (2b) contains the supplementary crystallographic data for this paper. These data can be obtained online free of charge [or from the Cambridge Crystallographic Data Centre, 12, Union Road, Cambridge CB2 1EZ, UK; fax: +44(1223)336033; or deposit@ccdc.cam.ac.uk].