Synthesis and intramolecular heterocyclization of β-amino ketone thiosemicarbazones
作者:I. N. Klochkova、A. A. Anis’kov、M. P. Shchekina、E. A. Voronina
DOI:10.1134/s1070428012040161
日期:2012.4
Intramolecular heterocyclization of thiosemicarbazones derived from saturated and conjugated beta-amino ketones afforded previously unknown dihydro-1,3,4-thiadiazole derivatives. A probable scheme of the transformation of multicenter intermediate includes generation and intramolecular cyclization of a thiol thiosemicarbazone tautomer without participation of conjugated double carbon-carbon bond in the substrate.
Andrisano et al., Atti dell'Accademia Gioenia di Scienze Naturali in Catania, 1956, vol. 10, p. 168,172