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首页> 外文期刊>RSC Advances >Efficient and environmentally friendly Glaser coupling of terminal alkynes catalyzed by multinuclear copper complexes under base-free conditions
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Efficient and environmentally friendly Glaser coupling of terminal alkynes catalyzed by multinuclear copper complexes under base-free conditions

机译：在无基质条件下多核铜配合物催化的高效和环保型炔烃的Glaser偶联

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摘要

An efficient catalytic system with dinuclear complex [Cu _(2) (ophen) _(2) ] 1 and tetranuclear complex [Cu _(4) (ophen) _(4) (tp)] 2 as catalysts has been developed for the Glaser coupling reaction, which adopts environmentally friendly water as the solvent at room temperature under air/O _(2) atmosphere and avoids the utilization of any base. Satisfyingly, due to its poor solubility in common solvents, tetranuclear compound 2 served as a molecular heterogeneous catalyst and could be reused five times without loss of activity. Both catalysts could be prepared in high yield via simple hydrothermal reactions with cheap ligands, which in combination with the environmentally friendly water medium and mild catalytic reaction conditions makes the approach accord with the concept of green chemistry in the synthesis of 1,3-diynes.
机译：具有二维络合物的有效催化系统[Cu _（2）（Ophen）_（2）] 1和四核复合物[Cu _（4）（Ophen）_（4）（TP）] 2作为催化剂已经开发为Glaser偶联反应，其在空气/ O _（2）气氛下的室温下为溶剂采用环保水，避免使用任何碱。满足地，由于其在普通溶剂中的溶解度不佳，四核化合物2用作分子非均相催化剂，并且可以重复使用五次而不会损失活性。两种催化剂都可以通过与廉价配体的简单的水热反应高收率来制备，这与环境友好的水介质和轻度催化反应条件组合使得这种方法符合1,3-迪克斯的合成中绿色化学的概念。

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