1,3,4-Oxadiazolium salts react with cyanamide in the presence of triethylamine to give good yields of 1-substituted 3-amino-1,2,4-triazoles. Four 2,4,6-triarylpyrylium perchlorates have been converted into 2-amino-3-aroyl-4,6-diarylpyridines in an analogous manner.
G. V. Boyd and S. R. Dando, J. Chem. Soc. C, 1971, 3873 DOI: 10.1039/J39710003873
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