The adducts formed by 4-functionally-substituted 2-aryl-5-hydrazino-1,3-oxazoles and aryl isothiocyanates recyclize on heating to produce the hitherto unknown derivatives of (1,3,4-thiadiazol-2-yl)glycine and its phosphonyl analogue.
α-aminocarboxylic acids - α-aminoalkylphosphonic acids - (1,3,4-thiadiazol-2-yl)glycine - 1,3-oxazoles - 3,3-dichloroacrylates - 2,2,2-trichloroethylphosphonates - aryl isothiocyanates