| 摘要 |
An object of the present invention is to provide an efficient method of manufacturing 3,3',4,4'-tetraaminobiphenyl with a smaller number of steps. The manufacturing method of 3,3',4,4'-tetraaminobiphenyl includes reacting the amino groups of a 4-halo-o-phenylenediamine with an inorganic sulfur compound to lead to a 5-halo-2,1,3-benzothiadiazole, subsequently coupling two molecules of the benzothiadiazole together to form a 5,5'-bis(2,1,3-benzothiadiazole) and then deprotecting the amino groups to yield 3,3',4,4'-tetraaminobiphenyl.
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