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Simple synthesis of poly (1,4-bis(dodecyloxy)-2,5-diethynylbenzene)/Pd composites with catalytic activity in Sonogashira coupling reaction
International Journal of Chemical Reactor Engineering ( IF 1.2 ) Pub Date : 2021-04-01 , DOI: 10.1515/ijcre-2020-0220
Jannatul Ferdousi Moon 1 , Mohammad Mizanur Rahman Khan 1 , M. Ashraful Alam 1 , Muhammad Younus 1, 2
Affiliation  

Palladium on the polymeric materials (Pd@polymer) as a catalyst is now very promising due to its great prospect for catalytic application. Such material in the form of composites is found to be stable and can be applied as catalyst in organic synthesis like Sonogashira coupling reaction. In the present work, Pd containing conjugated poly-ynes composites (Poly (1,4-bis(dodecyloxy)-2,5-diethynylbenzene) (Poly-DEB)/Pd) were synthesized by varying the addition of Pd in the range of equivalent weight of 8:4, 8:2 and 8:1, maintaining the fixed amount of 1,4-bis(dodecyloxy)-2,5-diethynylbenzene (DEB) through chemical oxidative polymerization technique. Both FTIR and UV-visible spectroscopy confirmed the interactions between DEB and Pd in the composites. The DSC data revealed the improved melting temperature as well as the crystallinity of the composites than the DEB. The PL spectra showed its florescence property. The catalytic capability of the Poly-DEB/Pd composites were examined using the Sonogashira coupling reactions, which demonstrated good yields. The suggested synthetic protocol is very facile, reproducible and beneficial for the fabrication of diverse mono and bimetallic composites with conjugated polymers. The present study also demonstrates the new example of Poly-DEB/Pd composites catalyzed Sonogashira coupling reaction. These composites have a possibility to develop as a commercial reagent in various organic synthesis subjects to its application prospects.

中文翻译:

在Sonogashira偶联反应中具有催化活性的聚(1,4-双(十二烷基氧基)-2,5-二乙炔基苯)/ Pd复合物的简单合成

由于其在催化应用中的广阔前景,在聚合材料上的钯(Pd @聚合物)作为催化剂现在非常有前途。已经发现这种复合材料形式的材料是稳定的,可以用作有机合成中的催化剂,如Sonogashira偶联反应。在本工作中,通过在以下范围内改变Pd的添加量,合成了含Pd的共轭聚炔复合材料(聚(1,4-双(十二烷基氧基)-2,5-二乙炔基苯)(Poly-DEB)/ Pd)。当量重量比为8:4、8:2和8:1时,通过化学氧化聚合技术将1,4-双(十二烷氧基)-2,5-二乙炔基苯(DEB)保持固定量。FTIR和紫外可见光谱都证实了复合物中DEB和Pd之间的相互作用。DSC数据显示,与DEB相比,复合材料的熔融温度和结晶度有所提高。PL光谱显示出其荧光特性。使用Sonogashira偶联反应检查了聚-DEB / Pd复合材料的催化能力,证明了良好的收率。所建议的合成方案非常容易,可重现,并且对于制造具有共轭聚合物的各种单金属和双金属复合材料是有益的。本研究还证明了聚-DEB / Pd复合材料催化Sonogashira偶联反应的新实例。这些复合物有可能在各种有机合成中发展为商业试剂,这取决于其应用前景。使用Sonogashira偶联反应检查了聚-DEB / Pd复合材料的催化能力,证明了良好的收率。所建议的合成方案非常容易,可重现,并且对于制造具有共轭聚合物的各种单金属和双金属复合材料是有益的。本研究还证明了聚-DEB / Pd复合材料催化Sonogashira偶联反应的新实例。这些复合物有可能在各种有机合成中发展为商业试剂,这取决于其应用前景。使用Sonogashira偶联反应检查了聚-DEB / Pd复合材料的催化能力,证明了良好的收率。所建议的合成方案非常容易,可重现,并且对于制造具有共轭聚合物的各种单金属和双金属复合材料是有益的。本研究还证明了聚-DEB / Pd复合材料催化Sonogashira偶联反应的新实例。这些复合物有可能在各种有机合成中发展为商业试剂,这取决于其应用前景。本研究还证明了聚-DEB / Pd复合材料催化Sonogashira偶联反应的新实例。这些复合物有可能在各种有机合成中发展为商业试剂,这取决于其应用前景。本研究还证明了聚-DEB / Pd复合材料催化Sonogashira偶联反应的新实例。这些复合物有可能在各种有机合成中发展为商业试剂,这取决于其应用前景。
更新日期:2021-04-18
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