Atomic economy, non-toxicity, harmlessness and multidirectional selectivity advocated by green chemistry have increasingly become a hot and difficult research topic. Herein, we present a highly efficient, one-pot tandem and easy-to-operate method through which we could directly produce a broad range of multi-directional selective hydrogenated amines or N-alkyl aliphatic amines using aromatic nitro compounds as raw materials. Ru/LDH with characteristics of layered mesoporous structure, well dispersed small Ru nanoparticles and LDH stabilization to the Ru NPs was employed as the catalyst. It is remarkable that multi-directional superb chemoselectivity to aromatic amines, alicyclic amines as well as N-alkyl aliphatic amines could be achieved with excellent catalytic activity and recyclability by tuning reaction conditions over 5wt%Ru/LDH-2. Additionally, this catalytic system also exhibited attractive activity and multi-directional chemoselectivity in the hydrogenation of quinoline and its derivatives with solvents of different polarity. Chemoselectivity to 5,6,7,8-tetrahydroquinoline derivatives could reach as high as 95.6%.

绿色化学倡导的原子经济，无毒，无害和多向选择性等问题日益成为研究的热点和难点。在本文中，我们提出了一种高效，一站式串联且易于操作的方法，通过该方法，我们可以使用芳族硝基化合物为原料直接生产各种多方向的选择性氢化胺或N-烷基脂肪族胺。具有层状介孔结构，良好分散的小Ru纳米颗粒和对Ru NPs的LDH稳定化的Ru / LDH用作催化剂。值得注意的是，通过在5wt％Ru / LDH-2上调节反应条件，可以以优异的催化活性和可回收性实现对芳族胺，脂环族胺以及N-烷基脂肪族胺的多方向优异的化学选择性。另外，在用不同极性的溶剂氢化喹啉及其衍生物时，该催化体系还表现出有吸引力的活性和多方向化学选择性。对5,6,7,8-四氢喹啉衍生物的化学选择性可高达95.6％。