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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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].
