Mixing a nonorganic sulphide salt with a mixture of isomeric substituted nitrobenzenes, including an isomer where the nitro group is in a hindered position between two substituents and other isomers where the nitro group is not hindered, results in the selective reduction of the unhindered isomers. The substituted anilines thus formed are readily separated from the unchanged hindered substituted nitrobenzene.
将无机
硫化盐与取代的
硝基苯异构体混合物(包括硝基位于两个取代基之间受阻位置的异构体和硝基不受阻挡的其他异构体)混合,可选择性地还原不受阻挡的异构体。 这样形成的取代
苯胺很容易从未变的受阻取代
硝基苯中分离出来。