Selective halogenation of benzene di- and tri- methanol...

Details Selective halogenation of benzene di- and tri- methanol... Selective halogenation of benzene di- and tri- methanol...

C - Chemistry, Metallurgy

07

C

260/566.5, 260/6

C07C 33/46 (2006.01) C07C 29/62 (2006.01)

Patent

CA 1269400

ABSTRACT SELECTIVE HALOGENATION OF BENZENE DI- AND TRI-METHANOL COMPOUNDS Benzene di- and tri-methanol compounds are selectively halogenated by reaction in aqueous solution at 70 to below 100°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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