A novel, eco‐friendly and fast route has been developed for the synthesis of new and known triazolo[1,5‐a ]pyrimidin fused chromone derivatives via a one pot three‐component reaction of 3‐amino‐1,2,4‐triazoles, aromatic aldehydes and 4‐hydroxycoumarin in aqueous medium at room temperature. These reactions are catalyzed by MCM‐41‐HWO₄ as a safe and recyclable mesoporous solid acid. It combines successfully the synergistic effect of green chemistry with nanocatalysis. The yields are high and the products were characterized by ¹H NMR, ¹³CNMR spectra and elemental analysis.

中文翻译：

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一种新的绿色方法，用于固定化钨酸的MCM-41作为可重复使用的催化剂，用于区域特异性合成新型色诺三唑并嘧啶

通过3-氨基1,2,4,3-一锅三组分反应，开发了一种新颖，环保，快速的路线，用于合成新的和已知的三唑并[1,5- a ]嘧啶融合的色酮衍生物。室温下，在水性介质中加入三唑，芳香醛和4-羟基香豆素。这些反应由MCM-41-HWO ₄催化，是一种安全且可回收的中孔固体酸。它成功地将绿色化学与纳米催化的协同作用结合在一起。产率高，并且产物通过¹ H NMR，¹³ CNMR光谱和元素分析来表征。