Highly Chemo‐ and Regioselective Reduction of Aromatic Nitro Compounds Catalyzed by Recyclable Copper(II) as well as Cobalt(II) Phthalocyanines
作者:Upendra Sharma、Praveen Kumar、Neeraj Kumar、Vishal Kumar、Bikram Singh
DOI:10.1002/adsc.201000191
日期:2010.10.9
Copper/cobalt phthalocyanines were established for the first time as catalysts for the very efficient chemo- and regioselective reduction of aromatic nitro compounds to generate the corresponding amines. The selective reduction of nitro compounds was observed in the presence of a large range of functional groups such as aldehyde, keto, acid, amide, ester, halogen, lactone, nitrile and heterocyclic
铜/钴酞菁是首次建立的,用于非常有效地化学和区域选择性还原芳香族硝基化合物以生成相应的胺的催化剂。在存在大量官能团如醛,酮,酸,酰胺,酯,卤素,内酯,腈和杂环官能团的情况下,观察到硝基化合物的选择性还原。此外,发现本方法对在短时间内以高收率还原芳族二硝基化合物具有高度区域选择性。在大多数情况下,通过GC-MS监测,转化率和选择性均> 99%。通过紫外可见光谱和电喷雾电离四极杆飞行时间串联质谱分析了还原机理。