1,2,3-Triazol-1-imines. 1. The synthesis and lead tetraacetate oxidation of biacetyl benzoylhydrazone arylhydrazones to the novel 2-aryl-N-benzoyl-4,5-dimethyl-1,2,3-triazol-1-imines
作者:C. P. Hadjiantoniou-Maroulis、A. J. Maroulis、A. Terzis、D. Mentzafos
DOI:10.1021/jo00034a013
日期:1992.4
The synthesis and the Pb(OAc)4 oxidation of the mixed bishydrazones of biacetyl 7 was studied. The formation of the novel N-benzoyl-1,2,3-triazol-1-imines 9 from the oxidation of 7 provided support to the proposed in the past mechanism for the oxidation of bis-aroylhydrazones of alpha-dicarbonyl compounds 4. Thermolysis and photolysis of 9a in DMSO was carried out. The results suggested that benzoylnitrene was formed in the photochemical reaction, and therefore compounds such as 9 could serve as non-azide aroyl nitrene precursors. For 9a the results of the X-ray analysis were correlated with charge densities and bond orders gleaned by the MNDO method. Product 9d was alternatively synthesized by the addition of photochemically generated benzoylnitrene to the 1,2,3-triazole 21.