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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Electroreduction of organic compounds, 34 [1]. Cathodic dehalogenation of chloroarenes with electron-donating substituents
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Electroreduction of organic compounds, 34 [1]. Cathodic dehalogenation of chloroarenes with electron-donating substituents

机译：有机化合物的电还原[34]。带有给电子取代基的氯代芳烃的阴极脱卤

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摘要

The electrochemical reduction of chlorinated arenes with electron-donating substituents, i.e. chlorotoluenes, -anisoles and -phenols, is studied. Preparative electrolyses are run in various solvent-supporting electrolytes under potentiostatic and galvanostatic conditions at lead or carbon cathodes. A partial and mostly regioselective hydrodechlorination of compounds with two or more chloro substituents is possible under suitable conditions. The replacement of one single chloro substituent, in particular in a para-position, is difficult. Highly toxic and persistent oligochloro derivatives are thus transformed into less problematic compounds with a low degree of chlorination. The chlorine content of real-life materials such as extracts of soil contaminated with chlorinated phenols and Nitrofen(R) can also be significantly decreased by electroreduction. [References: 64]
机译：研究了用给电子取代基，即氯甲苯，-茴香醚和-苯酚的电化学还原方法。在铅或碳阴极的恒电位和恒电流条件下，制备电解质在各种溶剂支持的电解质中进行。在合适的条件下，可以对具有两个或多个氯取代基的化合物进行部分且主要是区域选择性的加氢脱氯。一个单一的氯取代基，特别是在对位的取代是困难的。因此，高毒性且持久的低氯衍生物被转化为氯化程度较低，问题较少的化合物。现实生活中的材料（如被氯酚和Nitrofen污染的土壤提取物）中的氯含量也可以通过电还原显着降低。 [参考：64]

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