Synthesis of [1,2,4]Triazolo[1,5‐a]quinazolines. Assignment of the Conformation of Substituents with the Aid of13C‐NMR. SpectroscopyThe synthesis of [1,2,4]triazolo[1,5‐a]quinazolines by condensation of 2‐hydrazinobenzoic acid withN‐cyano‐imidates is reported. The preferred conformation of substituents at C (5),e.g.N (CH3)2, N (CH3)NH2, N (CH3)OH, relative to the aromatic system is deduced with the aid of13C‐NMR. chemical shifts and proton nuclearOverhausereffec