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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >An efficient heterogeneous catalytic system for chemoselective hydrogenation of unsaturated ketones in aqueous medium
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An efficient heterogeneous catalytic system for chemoselective hydrogenation of unsaturated ketones in aqueous medium

机译：一种高效的非均相催化体系，用于在水性介质中对不饱和酮进行化学选择性加氢

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摘要

A highly chemoselective and green heterogeneous catalytic system of immobilized Ru(II)-phenanthroline complexes on amino functionalised MCM-41 material for the chemoselective hydrogenation of unsaturated ketones to unsaturated alcohols is demonstrated using water as a solvent. The XRD and FTIR spectra show the highly ordered hexagonal nature of the MCM-41, even after encapsulation of the ruthenium complex. The complex retains its configuration after anchoring, as was confirmed by FTIR and UV-Vis analysis. The detailed reaction parametric effect was studied for the hydrogenation of 3-methylpent-3-en-2-one to achieve complete conversion up to >99% chemoselectivity of 3-methylpent-3-en-2-ol. The anchored heterogeneous catalysts were recycled effectively and reused five times with marginal changes in activity and selectivity. The use of water as a solvent not only afforded high activity for the hydrogenation reaction compared to organic solvents, but also afforded a green process.
机译：使用水作为溶剂，证明了氨基官能化MCM-41材料上固定化Ru（II）-菲咯啉配合物的高度化学选择性和绿色非均相催化体系，用于将不饱和酮化学选择性氢化为不饱和醇。 XRD和FTIR光谱显示了MCM-41的高度有序六边形性质，即使在钌络合物包封后也是如此。如FTIR和UV-Vis分析所证实，复合物在锚定后仍保持其构型。研究了3-甲基戊-3-烯-2-酮氢化反应的详细反应参数效应，以实现高达> 99％的3-甲基戊-3-烯-2-醇化学选择性的完全转化。锚定的非均相催化剂可有效回收利用，并在活性和选择性略有变化的情况下重复使用五次。与有机溶剂相比，使用水作为溶剂不仅为氢化反应提供了高活性，而且还提供了绿色工艺。

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