| 摘要 |
Dimethyl 2, 3, 5, 6-tetrachloroterephthalate is prepared by reacting the molten acid chloride with an alkali and methanol. The 2, 3, 5, 6-tetrachlorotetraphthalyl chloride may be prepared by fusing together alpha, alpha-hexachloro-p-xylene and terephthalic acid and directly chlorinating the terephthalyl chloride so formed. Metal chloride catalysts, e.g. FeCl3, may be used for both the fusion and chlorination steps. |
