The use of sodium hydrosulphide as a selective reducing agent for aromatic nitro-groups has been investigated with respect to experimental details (including solvent) and yield and ease of purification of product, via studies on the x,y′-dinitrobiphenyls (x= 2–4, y= 2–4). The hydrosulphide-induced reduction is superior to previously reported methods. Its advantages and possible applications are discussed.
J. P. Idoux, J. Chem. Soc. C, 1970, 435 DOI: 10.1039/J39700000435
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