Selective reduction of aromatic / aliphatic nitro groups by sodium sulfide.

Current Trends and Future Perspectives of Hydrogen Sulfide Donors

“…Due to H2S reducing properties it can reduce azide and nitro groups [14,15] [43] and this is used for H2S detection using different fluorescent probes (Figure 3) [44][45][46].…”

Highly active heterogeneous hydrogenation catalysts prepared from cobalt complexes and rice husk waste

“…This has so far only been described using stoichiometric amounts of Na 2 S in moderate yields of 70%. 83 Recycling experiments…”

Benzo[1,2,3]dithiazole Compounds: A History of Synthesis and Their Renewed Applicability in Materials and Synthetic Chemistry, Originating from the Herz Reaction

“…Often released from benzothiazole derivatives by hydrolysis, the source is atom inefficient, and the removal of the C2 carbon requires a lot of energy, so there is an opportunity for improvement [62,63]. An alternative legacy method is using the Zinin reduction of 2-nitrochlorobenzene [64][65][66][67], although the reported yields for this process are generally modest at best, and there appears to have been little investigation into this process in recent times. While the formation of the ring-opened aminothiophenol from the benzodithiazole (Scheme 21) is also incredibly simple, it is also the limitations of average yields and product contamination with, e.g., sulphur residues that are problematic.…”