amino acids. The triazolylcarbonylglycines were azlactonised with aromatic aldehydes to 4-arylidene-2-triazolyl-2-oxazolin-5-ones, which behaved similar to the 2-phenyl analogues towards the action of ammonia and amines. Cyclisation of the triazolylcarbonylanthranilic acids with acetic anhydride afforded 2-triazolyl-4H-3,1-benzoxazin-4-ones.