Iron and Palladium(II) Phthalocyanines as Recyclable Catalysts for Reduction of Nitroarenes
作者:Praveen Kumar Verma、Manju Bala、Kavita Thakur、Upendra Sharma、Neeraj Kumar、Bikram Singh
DOI:10.1007/s10562-014-1269-6
日期:2014.7
Iron(II) and palladium(II) phthalocyanines have been established as recyclable heterogeneous catalysts for the reduction of aromatic nitro compounds to corresponding amines using diphenylsilane/sodium borohydride as hydrogen sources in ethanol. Various reducible functional groups, such as acetyl, ester, cyano, amide, sulphonamide and carboxylic acid etc. were well tolerated, and the methods were applicable
铁(II)和钯(II)酞菁已被确定为可回收的多相催化剂,用于使用二苯基硅烷/硼氢化钠作为乙醇中的氢源将芳香硝基化合物还原为相应的胺。各种可还原的官能团,如乙酰基、酯、氰基、酰胺、磺酰胺和羧酸等均具有良好的耐受性,并且该方法适用于克级规模。机理研究表明,硝基的还原通过直接(亚硝基)途径进行,可能铁或钯酞菁会激活硝基进行还原。FePc 和 PdPc 还催化二苯基硅烷/硼氢化钠和乙醇的组合产生氢气。图形摘要铁和钯(II)酞菁已被确立为一种有效的可回收催化体系,用于用绿色溶剂体系还原硝基芳烃。各种硝基取代的芳烃和杂芳烃已成功还原为相应的胺,产率非常好。本方法也已有效地适用于克级反应。