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    • 9. 发明授权
    • Preparation of aromatic iodine compounds
    • 芳香族碘化合物的制备
    • US4716254A
    • 1987-12-29
    • US882575
    • 1986-07-07
    • Raymond L. Cobb
    • Raymond L. Cobb
    • C07C17/12
    • C07C17/12
    • Monohalobenzene compounds are iodinated with an iodination reagent selected from the group consisting of (i) iodine monochloride and (ii) I.sub.2 /Cl.sub.2 mixtures having a mol ratio of about 1:3-5:1, in the presence of a catalyst selected from the group consisting of MoCl.sub.5, FeCl.sub.3, lanthanide chlorides and mixtures thereof. Preferably one of chlorobenzene and fluorobenzene is at least partially converted to at least one of para-iodochlorobenzene and para-iodofluorobenzene. Various other aromatic compounds, preferably di- and trichlorobenzene, xylenes, nitrobenzene and ethyl benzoate, are iodinated with an iodination reagent selected from the group consisting of (i) iodine monochloride and (ii) I.sub.2 /Cl.sub.2 mixtures having a mol ratio of about 1:3-5:1, in the presence of a catalyst comprising FeCl.sub.3 and, optionally, a lanthanide chloride.
    • 单卤代苯化合物用碘化试剂碘化,所述碘化试剂选自(i)一氯化碘和(ii)摩尔比为约1:3-5:1的I 2 / Cl 2混合物,在催化剂存在下,选自 MoCl 5,FeCl 3,镧系元素氯化物及其混合物组成的组。 优选氯苯和氟苯中的至少一种至少部分转化为对碘氯苯和对碘氟苯中的至少一种。 各种其它芳族化合物,优选二氯和三氯苯,二甲苯,硝基苯和苯甲酸乙酯,用碘化试剂进行碘化,所述碘化试剂选自(i)一碘化碘和(ii)摩尔比为约1的I 2 / Cl 2混合物 :3-5:1,在含有FeCl 3和任选的镧系元素氯化物的催化剂的存在下。