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Paper | Regular issue | Vol 36, No. 4, 1993, pp.857-863
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6254
A New Synthesis of Pyrazolo[3,4-d]thiazoles

Chiara B. Vicentini, Augusto C. Veronese, Mario Guarneri, Maurizio Manfrini, and Paolo Giori*

*Dipartimento di Scienze Farmaceutiche, Università di Ferrara,via Fossato di Mortara 17, I-44100, Ferrara, Italy


An efficient synthesis of pyrazolo[3,4-d]thiazoles (6) was achieved by treatment of N-(4-amino-5-pyrazolyl)thiocarboxamides (4) with sodium nitrite in acidic medium followed by irradiation with uv light.