Ring Transformations of Semicyclic 1,3-Dicarbonyl Heteroanalogs; I. Synthesis of Semicyclic N-Acyl- and N-(Aminocarbonyl)amidine Derivatives and Their Ring Transformation to 5-(ω-Aminoalkyl)-1,2,4-triazoles

Article abstract of DOI:10.1055/s-1989-27353

The semicyclic N-(thioacyl)- or N-(aminothiocarbonyl)amidines 11 are readily available through reaction of O-methyllactims 9 or in situ generated lactam acetales 10 with aminothiocarbonyl compounds 7 or with carboxamides or ureas 8 and sulfurization of th