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Note | Regular issue | Vol 51, No. 3, 1999, pp.599-604
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8350
The Preparation and Lead Tetraacetate Oxidation of Mixed Bisaroyl Hydrazones of Biacetyl to 1-(α-Aroyloxyarylideneamino)-3,5-dimethyl-1,2,3-triazoles

Constantina P. Hadjiantoniou-Maroulis

*Department of Chemistry, Laboratory of Organic Chemistry, Aristotle University of Thessaloniki, P.O.B. 103, GR-540 06 Thessaloniki, Greece


The preparation and lead tetraacetate oxidation of the mixed aroyl hydrazones of biacetyl (2) to the pairs of isomeric 1-(α-aroyloxy-arylideneamino)-3,5-dimethyl-1,2,3-triazoles (6) and (6’) is described. The product ratio of 6/6’ is evaluated in terms of the stability imparted to the zwiterionic intermediate (5) by the different substituents on the aroyl groups.