A Facile Synthesis of 4-Pyrazolylthiazoles and 4-Pyrazolylmercaptoimidazoles using [Hydroxy(tosyloxy)iodo]benzene

Department of Chemistry, Kurukshetra University, Kurukshetra-136 119 Manuscript received 30 September 1997 Treatment of 4-acylpyrazoles with [hydroxy(tosyloxy)iodo]benzene gives 4-(α-tosyloxyaeetyl)pyrazole, which has been found to be an excellent intermediate for the synthesis of the title compounds