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金属卟啉催化条件下有机化合物与二氧化碳的电羧化反应 Ⅰ.金属卟啉对苄基氯电羧化催化活性的研究
Electrocarboxylation of Organic Compounds with Carbon dioxide Catalyzed by Metalloporphyrins Ⅰ. Catalytic Activities of Metalloporphyrins for Electrocarboxylation of Benzyl Chloride
【摘要】 本文研究了系列金属卟啉对苄基氯(PhCH2Cl)和CO2电羧化反应的催化活性.用熔点,MS,IR,UV鉴别产物为苯乙酸苄酯,利用高效液相色谱(HPLC)定量分析了羧化产物.选出最佳电羧化电解电位为-1.6V(相对于饱和甘汞电极,vs SCE,下同).并对催化活性较高的钴卟啉系列配合物进行了深入研究,探讨了金属卟啉具有催化活性的原因,认为能形成M(I)中间体的金属卟啉配合物,具有较高的催化活性.
【Abstract】 The electrocarboxylation of benzyl chloride with CO2 catalyzed by metalloporphyrins and the effects of different kinds of central metals and ligands on catalytic activities are reported firstly in this researching range. Metallopophyrins whose central metal can form corresponding M (I) complex compoundes such as CoTPP, FeTPP possess higher activities of catalyzation. Metalloporphyrins with water-soluble ligands such as (Co, Fe)TPPS, (Co, Fe)TTMAPPI are better catalysts. Electron-withdrawing groups on the rings of porphyrins cause the lowing of metalloporphyrinscatalytic activities.
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,1995年03期
- 【分类号】O621.25
- 【被引频次】8
- 【下载频次】147