3,6-Di(pyridin-2-yl)-1,2,4,5-s-tetrazine capped‑silver nanoparticles (TzAgNPs) exhibit an excellent catalytic activity and chemoselectivity for the reduction of various substituted nitroarenes to the corresponding aromatic amines in aqueous medium with sodium borohydride and hydrazine hydrate as a hydrogen donor at room temperature. The reaction kinetics of the reduction of 4-nitrophenol to 4-aminophenol has also been studied to determine the apparent rate constant. The catalyst TzAgNPs efficiently reduces the nitro group under very mild conditions, thus affording excellent yields within very short reaction time (˂20 min), and shows high selectivity even in the presence of other sensitive functional groups.

3,6-二（吡啶-2-基）-1,2,4,5- s-四嗪封端的银纳米颗粒（TzAgNPs）具有出色的催化活性和化学选择性，可将各种取代的硝基芳烃还原为相应的芳族胺在室温下，在含有硼氢化钠和水合肼作为氢供体的水性介质中。还研究了将4-硝基苯酚还原为4-氨基苯酚的反应动力学，以确定表观速率常数。催化剂TzAgNPs在非常温和的条件下可有效还原硝基，因此可在非常短的反应时间内（约20分钟）提供优异的收率，即使在存在其他敏感官能团的情况下也显示出高选择性。