Tautomerism of Allyl-5-(pyridin-2-yl)-[1,3,4] Thiadiazol-2-yl) Amine

Leokadia Strzemecka
Chair and Department of Organic Chemistry, Faculty of Pharmacy with Medical Analytics Division, Medical University of Lublin, Staszica 6, 20 081 Lublin, Poland
E-mail: leokadia.strzemecka@am.lublin.pl

Abstract
The radical and ionic structures of allyl-(5-pyridin-2-yl-[1,3,4] thiadiazol-2-yl )-amine 1A ↔1A↔1Aa, 1A (I) ↔
1A (I)↔1A (I)a
have been determined by means of its 1H (100 MHz, 500 MHz) 13C and 15N NMR spectra and
B3LYP/6-31G** computations. The tautomeric intercorvertions of 1A ↔1A (I ) 1B, 1A ↔1A (I ) 1C have
been observed in the 1H NMR spectra (100 MHz)

Keywords: Allyl-(5-pyridin-2-yl-[1,3,4]-thiadiazol-2-yl)-amine; tautomerism