In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Gold-catalyzed direct hydrogenative coupling of nitroarenes to synthesize aromatic azo compounds, published in 2014, which mentions a compound: 16588-26-4, mainly applied to nitroarene hydrogenative coupling gold catalyst; diphenyldiazene green preparation; arenes; azo compounds; gold; reduction; supported catalysts, Application In Synthesis of 3-Bromo-4-chloronitrobenzene.
The azo linkage is a prominent chem. motif which has found numerous applications in materials science, pharmaceuticals, and agrochems. Described herein is a sustainable heterogeneous-gold-catalyzed synthesis of azo arenes. Available nitroarenes are deoxygenated and linked selectively by the formation of N-N bonds using mol. H2 without any external additives. As a result of a unique and remarkable synergy between the metal and support, a facile surface-mediated condensation of nitroso and hydroxylamine intermediates is enabled, and the desired transformation proceeds in a highly selective manner under mild reaction conditions. The protocol tolerates a large variety of functional groups and offers a general and versatile method for the environmentally friendly synthesis of sym. or asym. aromatic azo compounds © 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
In addition to the literature in the link below, there is a lot of literature about this compound(3-Bromo-4-chloronitrobenzene)Application In Synthesis of 3-Bromo-4-chloronitrobenzene, illustrating the importance and wide applicability of this compound(16588-26-4).
Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts