ChemInform Abstract: A Convenient Route to Synthesize 1,2,4‐Triazolo[1,5‐a]pyrimidine Derivatives and Their One and Two‐Photon Absorption Spectral Properties.

Abstract

Fused pyrimidine derivatives R 0515 A Convenient Route to Synthesize 1,2,4-Triazolo[1,5-a]pyrimidine Derivatives and Their One and Two-Photon Absorption Spectral Properties. -Stilbene-type chromophores, i.e. title compounds (III) and (IV), are obtained by the Knoevenagel reaction in one step. They show efficient two-photon induced orange red fluorescence emission. -(WANG*, H.; XU, W.; DAI, Y.; ZHANG, B.; WU, Q.; WANG, D.; ZHANG, M.; TIAN, M.; WU, H.; J. Heterocycl. Chem. 44 (2007) 5, 993-997; Dep. Chem., Central Chin. Normal Univ., Wuhan 430079, Peop. Rep. China; Eng.) -H. Toeppel 04-175