Amidinoyl Isothiocyanates in the Synthesis of Condensed Heterocycles: Tetrazolo-azidoazomethine Tautomerism in Substituted Tetrazoloquinazolines

Article abstract of DOI:10.1007/BF00815923

Isomerization of available amidinoyl isothiocyanates has been elaborated into a viable synthetic approach to sec. amine substituted tetrazolo<1,5-c>quinazolines.The method involves isomerization to quinazoline-4-thiones, their hydrazinolysis, followed by