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A Facile and Efficient One-Pot Electrochemical Synthesis of Thiazole Derivatives in Aqueous Solution

机译:水溶液中噻唑衍生物的快速高效一锅电化学合成

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摘要

In the present work, the electrooxidation of hydroquinones 1a and 1b, and catechols 1c and 1d was studied in the presence of rhodanine (3) as nucleophile in a mixture of EtOH and phosphate buffer solution as 'green' media using cyclic voltammetry and controlled-potential coulometry. The results indicated that the corresponding p-and o-quinones formed from the hydroquinones and catechols, respectively, participate in Michael addition reaction to yield new thiazole derivatives. The electrochemical syntheses of these new thiazole derivatives were performed successfully at three graphite rod electrodes in undivided cells in good-to-excellent yields at room temperature without any catalyst.
机译:在目前的工作中,对氢醌1a和1b以及邻苯二酚1c和1d的电氧化反应进行了研究,采用环伏安法和受控伏安法,在以RtOH(3)为亲核试剂的EtOH和磷酸盐缓冲溶液的混合物中将其作为“绿色”介质。电位库仑法。结果表明,分别由氢醌和邻苯二酚形成的相应的对-和邻-醌,参与迈克尔加成反应,生成新的噻唑衍生物。这些新的噻唑衍生物的电化学合成成功地在室温下在无催化剂的情况下,在未分割电池中的三个石墨棒电极上以良好至优异的产率进行。

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