硝基化合物还原制备芳香胺工艺研究进展

Development of the preparation methods for aromatic amine by reduction of aromatic nitro compounds

综述了还原芳香族硝基化合物制备芳胺的主要方法,包括催化加氢法、金属还原法、水合肼还原法、电化学还原法等.在对4种还原反应机理概述的基础上,分别介绍了其应用情况及各自的优缺点.其中水合肼还原法由于其具有反应收率高、产品纯度高及无污染等优点越来越受到人们的关注.

Four preparation methods for aromatic amine were reviewed in the paper： reduction of metals, catalytic hydrogenation reduction, hydration hydrazine reduction and electro-chemical reduction. In these methods hydrazine hydrate reduction is the major one in the future for higher yields and purity and zero pollution. The reaction mechanism of these methods were also summarized.