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首页> 外文期刊>RSC Advances >Cu/TCH-pr@SBA-15 nano-composite: a new organometallic catalyst for facile three-component synthesis of 4-arylidene-isoxazolidinones
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Cu/TCH-pr@SBA-15 nano-composite: a new organometallic catalyst for facile three-component synthesis of 4-arylidene-isoxazolidinones

机译：CU / TCH-PR @ SBA-15纳米复合材料：适用于4-亚芳基异恶唑烷酮的舒适三组分合成的新有机金属催化剂

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摘要

A copper complex supported on SBA-15 nanoparticles (Cu/TCH-pr@SBA-15) was synthesized by the post-synthesis modification of nano-mesoporous silica with 3-chloropropyltriethoxysilane (CPTES) and thiocarbohydrazide (TCH) and subsequent metal–ligand coordination with Cu( II ). These nanocomposites were thoroughly characterized by FT-IR spectroscopy, TEM, FE-SEM, EDX, atomic absorption spectroscopy and N _(2) adsorption–desorption (BET) studies. Then, a solvent-free method was developed for the three-component synthesis of 4-arylidene-isoxazolidinones via condensation of hydroxylamine hydrochloride, ethyl acetoacetate and various aromatic aldehydes using Cu/TCH-pr@SBA-15 as a highly efficient nanocatalyst. This new economic and eco-friendly methodology has remarkable advantages such as excellent yields, a shorter reaction time, an easy purification procedure, simplicity, green conditions, solvent-free conditions, and recoverability of the nanocatalyst.
机译：通过用3-氯丙基三乙氧基硅烷（CPTE）和硫代芳基肼（TCH）和随后的金属 - 配体，通过合成纳米介孔二氧化硅的后合成改性合成了SBA-15纳米粒子（Cu / Tch-Pr @ SBA-15）的铜络合物。与Cu（II）的协调。通过FT-IR光谱，TEM，Fe-SEM，EDX，原子吸收光谱和N _（2）吸附 - 解吸（BET）研究进行彻底地表征。然后，通过使用Cu / Tch-Pr @ SBA-15作为高效纳米催化剂，通过羟胺盐酸盐，乙基乙酸乙酯和各种芳香族醛缩合而开发了一种无溶剂方法。这种新的经济和生态友好的方法具有显着的优点，如优异的产量，反应时间较短，易于纯化程序，简单性，绿色条件，无溶剂的条件以及纳米催化剂的可回收性。

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