Catalytic bromination of 2-fluoroaniline

Details Catalytic bromination of 2-fluoroaniline Catalytic bromination of 2-fluoroaniline

1990-01-31

1991-10-01

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C20974

Patent

active

050535420

ABSTRACT:
A process for the production of 2,4-dihaloaniline, especially 4-bromo-2-fluoroaniline, via the halogenation (bromination) of 2-haloaniline (2-fluoroaniline) in the presence of quaternary ammonium halide (bromide) catalyst in an inert solvent. The yield and selectivity are very high and the inventive method includes continuous processing with recycle of the catalyst/solvent mixture.

REFERENCES:
patent: 3987057 (1976-10-01), Goddard
patent: 4138242 (1979-02-01), Goddard
patent: 4443631 (1984-04-01), Padilla

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