1-Aryl-1H-1,2,3-triazole-4-carboxamides 7d–f have been synthesized and converted to 2-dimethylamino-4-quinolones 12d–f by flash vacuum thermolysis (FVT). The reaction takes place via carboxamidoketenimine 9 and amidinoketene intermediates 10. The former are observed by FTIR spectroscopy at 77 K or in Ar matrices at 12 K.
V. V. Ramana Rao and C. Wentrup, J. Chem. Soc., Perkin Trans. 1, 1998, 2583 DOI: 10.1039/A802768D
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