Bis-[4-alkyl/aryl-5-thia-1,2,4-triazoles] were prepared by fusion of diacids and thiosemicarbazides by condensation of aromatic acid hydrazides with isothiocyanate. Chemoselective alkylation of these bis-[4-alkyl/aryl-5-thia-1,2,4-triazoles] with 1,omega-dihaloalkanes in presence of potassium hydroxide in aqueous methanol afforded novel N-alkyl/aryl thiatriazolophanes.
4-alkyl/aryl-5-thia-1,2,4-triazoles; 1,omega-dihaloalkanes; N-alkyl/aryl thiatriazolophanes; chemoselectivity
