In this article a simple method is reported for the promotion of the synthesis of imidazo[1,2-a]pyrimidine-3-carbonitriles and 1,2,4-triazolo[4,3-a]pyrimidines derivatives via three component one-pot condensation of various aromatic aldehydes, malononitrile and 2-aminobenzimidazole or 3-amino-1,2,4-triazole using TiO₂-[bip]-NH₂⁺ C(NO₂)₃⁻ as a new efficient nano-catalyst. All the products which were obtained under mild and solvent-free conditions were identified with the comparison of their physical properties and spectral data with the authentic samples. The structure of the prepared catalyst was characterized using Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray analysis (EDX), field emission scanning electron microscopy (FESEM), thermo gravimetric analysis (TGA) and X-ray diffraction (XRD). The significant features of this procedure are short reaction times, high yields of the products, ease of separation of the products and easy preparation of the catalyst. Also the catalyst can be recycled and reutilized for several cycles in the studied reactions.

本文报道了一种促进合成咪唑并[1,2 - a ]嘧啶-3-腈和1,2,4-三唑并[4,3- a ]嘧啶衍生物的简单方法，该方法通过三组分一-使用 TiO ₂ -[bip]-NH ₂ ⁺ C(NO ₂ ) ₃ ^-各种芳香醛、丙二腈和 2-氨基苯并咪唑或 3-氨基-1,2,4-三唑的罐缩合作为一种新型高效纳米催化剂。在温和和无溶剂条件下获得的所有产品都通过与真实样品的物理性质和光谱数据进行比较来鉴定。使用傅里叶变换红外光谱（FT-IR）、能量色散X射线分析（EDX）、场发射扫描电子显微镜（FESEM）、热重分析（TGA）和X射线衍射对制备的催化剂的结构进行了表征（ XRD）。该方法的显着特点是反应时间短、产物收率高、产物易于分离和催化剂易于制备。此外，催化剂可以在所研究的反应中循环和再利用几个循环。