Highly Chemo- and Regioselective Reduction of Aromatic Nitro Compounds Using the System Silane/Oxo-Rhenium Complexes
作者:Rita G. de Noronha、Carlos C. Romão、Ana C. Fernandes
DOI:10.1021/jo9008657
日期:2009.9.18
The reduction of aromatic nitro compounds to the corresponding amines with silanes catalyzed by high valent oxo-rhenium complexes is reported. The catalytic systems PhMe2SiH/ReIO2(PPh3)2 (5 mol %) and PhMe2SiH/ReOCl3(PPh3)2 (5 mol %) reduced efficiently a series of aromatic nitro compounds in the presence of a wide range of functional groups such as ester, halo, amide, sulfone, lactone, and benzyl
据报道,由高价氧-hen络合物催化的硅烷将芳族硝基化合物还原为相应的胺。PhMe 2 SiH / ReIO 2(PPh 3)2(5 mol%)和PhMe 2 SiH / ReOCl 3(PPh 3)2(5 mol%)催化体系在宽范围的存在下有效还原了一系列芳族硝基化合物官能团的范围,例如酯,卤素,酰胺,砜,内酯和苄基。该方法还允许在脂肪族硝基存在下将二硝基苯区域选择性还原成相应的硝基苯胺和将芳族硝基还原。