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- 2018
Preparation Physico-chemical Characterization and Catalytic Applications of Polymer Anchored Dimethylglyoxime Copper (II) Metal Complex - Preparation Physico-chemical Characterization and Catalytic Applications of Polymer Anchored Dimethylglyoxime Copper (II) Metal Complex - Open Access PubAbstract: Oxidation of 1-Proponol, 1-butanol 1-Hexanol and benzyl alcohol using chloromethylated polystyrene (6% Cross link) DMG (Dimethylglyoxime) copper complex or Poly(S-DVB)-DMG-M Where M= Cu) as catalyst and tert.butylhydroperoxide(TBHP) as oxidant, was studied. The polymer supported Cu Complex was characterized by some physicochemical and spectroscopic methods like elemental analysis IR Scanning electron micrographs (SEM). In the oxidation of 1-propanol, 1-butanol, 1-hexanol and benzyl alcohol. It was found that Product yield of these alcohols corresponding the order 1-Butanal >1-hexanone >Benzyldehyde > 1-Propanone. Kinetic data indicates that catalyst could be recycled without significant degradation of polymer DOI10.14302/issn.2377-2549.jndc-14-391 Oxidation of alcohols in to aldehydes is a pivotal reaction in the organic synthesis both for fundamental research and industrial manufacturing.1, 2, 3 The oxidation of alcohols in to adehydes is an important and useful reaction in both chemical and pharmaceutical industries now, from both economic and environmental points of view, much attention has recently been focused on the aerobic catalytic oxidation of alcohols to oxygenic compounds using metal catalysts. Transition metal complexes are widely used in homogeneous and heterogeneous catalytic oxidations of different alkenes, alkynes, alcohols, halides, phenols etc in the recent past; there has been an increasing interest in developing environmental friendly greener processes, which are also economically viable.4, 5, 6Homogeneous transition metal catalyst systems suffer from a major drawback of the catalyst recovery and/or reuse affecting the overall economics of the process in the past few decades; there have been significant developments in the application of heterogeneous catalysts for the industrial production of organic chemicals. Heterogeneous catalysts, which are widely used in industry, have good thermal stability, can be easily separated from the reaction mixture and can be often regenerated and reused. Therefore, heterogenizing of a homogeneous metal complex by supporting it on an insoluble support has attracted a lot of interest as a suitable method for solving many practical problems including recovery of the catalyst from reaction mixture and recycling. of the catalyst, and the possibility of these catalysts being used in continuous flow systems or in automated synthesis. 7, 8, 9 Among organic polymers polystyrene has been extensively used as a support with a wide range of functional groups incorporated in it to bind the metal into the
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