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Communication | Regular issue | Vol 34, No. 9, 1992, pp.1703-1706
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6083
A Site- and Regio-specific Route to Perfluoroalkylisoxazoles

Pierfrancesco Bravo, Dario Diliddo, and Giuseppe Resnati*

*C.N.R.-Centro Studio Sostanze Organiche Naturali and Dipartimento Chimica , Politecnico, Piazza Leonardo da Vinci 32, 20133 Milano, Italy


The 1,3-cycloaddition reaction of nitrile oxides (1) to β-perfluoroalkyl-β-dicarbonyl compounds (2) affords regio- and site-selectively either 5-perfluoroalkylisoxazoles (4) or 4-trifluoroacetylisoxazoles (6) according to the nature of dipolarophiles (2).