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SELECTIVE HALOGENATION OF BENZENE DI- AND TRI-METHANOL COMPOUNDS; NOVEL HALOMETHYL-BENZENE METHANOLS
SELECTIVE HALOGENATION OF BENZENE DI- AND TRI-METHANOL COMPOUNDS; NOVEL HALOMETHYL-BENZENE METHANOLS
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机译:苯二-和三-甲醇化合物的选择性卤化;新型卤代甲基苯甲醇
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摘要
Benzene di- and tri-methanol compounds are selectively halogenated by reaction in aqueous solution at 70 to below 100 DEG C with HCl or HBr in the presence of a water immiscible solvent eg. toluene. The process is particularly suitable for the preparation of 4-bromo- and 4-chloromethyl-2,3,5,6-tetrafluorobenzene methanols which are believed to be novel compounds and useful in the synthesis of pesticidal compounds.
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