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Article << Previous     |     Next >>   Contents Vol 57(6)

A Convenient Synthesis of 2-Substituted Thiazole-5-carboxylates

Mei Fong, Wit K. Janowski, Rolf H. Prager and Max R. Taylor

Australian Journal of Chemistry 57(6) 599 - 604
Published: 02 June 2004


The photolysis of ethyl 5-oxo-2-phenyl-2,5-dihydroisoxazole-4-carboxylate in acetonitrile containing 0.5% tri- fluoroacetic acid in the presence of thioamides gives moderate (40–60%) yields of thiazole-5-carboxylate esters. In the absence of trifluoroacetic acid, the intermediate vinyl thioesters can be isolated. That addition of the thioamide to the first formed carbene was, through sulfur, confirmed by X-ray crystal structures of 2-methylthiazole-5-carboxylic acid and a byproduct.

Full text doi:10.1071/CH03252

© CSIRO 2004

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