ABSTRACT A clean and efficient method has been developed for the synthesis 1, 3, 5-triaryl-2-pyrazoline derivatives via cyclocondensation of chalcone and phenyl hydrazine using TS-1 as solid heterogeneous reusable catalyst. The catalyst was synthesized by the hydrothermal method under autogenous pressure. The prepared catalyst was characterized by Powder-X-ray diffraction (XRD), Fourier-transform infrared spectroscopy spectroscopy, scanning electron microscope-Energy dispersive spectroscopy (EDAX) and Brunauer–Emmett–Teller surface area analysis. The present method offers significant advantages over the reported methods like easy separation of catalyst, simple work-up procedure, and excellent yield of desired products. Furthermore, catalyst could be reused without significant loss in activity.

中文翻译：

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TS-1 沸石的制备、表征：一种用于合成 1, 3, 5-三芳基-2-吡唑啉的有效固体酸催化剂

摘要 以 TS-1 作为固体非均相可重复使用的催化剂，通过查耳酮和苯肼的环缩合反应，开发了一种清洁高效的合成 1, 3, 5-三芳基-2-吡唑啉衍生物的方法。该催化剂是在自生压力下通过水热法合成的。制备的催化剂通过粉末X射线衍射（XRD）、傅里叶变换红外光谱、扫描电子显微镜-能量色散光谱（EDAX）和Brunauer-Emmett-Teller表面积分析进行表征。本方法与报道的方法相比具有显着的优势，如催化剂易于分离、后处理程序简单、所需产品收率高。此外，催化剂可以重复使用而不会显着降低活性。