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Synlett 2007(11): 1763-1766
DOI: 10.1055/s-2007-982562
DOI: 10.1055/s-2007-982562
CLUSTER
© Georg Thieme Verlag Stuttgart · New York
Gold-Catalyzed Cyclization of N-Alkynyl Carbamates
Further Information
Received
1 March 2007
Publication Date:
25 June 2007 (online)
Publication History
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.
Key words
alkynes - carbamates - gold catalysis - iodonium salts - oxazolinones
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References and Notes
New address: A. S. K. Hashmi, Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
16CCDC 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].