Process for the preparation of 2,4-dichloro-5-fluorobenzonitrile

Details Process for the preparation of 2,4-dichloro-5-fluorobenzonitrile Process for the preparation of 2,4-dichloro-5-fluorobenzonitrile

1992-02-14

1993-02-16

Brust, Joseph Paul

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

Organic compounds

Nitriles

558425, C07C25314

Patent

active

051872951

ABSTRACT:
Process for the preparation of 2,4-dichloro-5-fluorobenzonitrile, by reacting 5-bromo-2,4-dichlorofluorobenzene with about 10 to about 300 mol % of copper(I) cyanide in the presence of about 10 to about 2,000 mol % of a polar aprotic solvent at temperatures from about 100.degree. to about 250.degree. C. to give 2,4-dichloro-5-fluorobenzonitrile.

REFERENCES:
patent: 3009942 (1961-11-01), Klein et al.
patent: 3179691 (1965-04-01), Koopman et al.
patent: 3644471 (1972-02-01), DiBella
patent: 4528143 (1985-07-01), Kurono et al.
Chem. Abs. 113:77918q (1989), Shi et al.

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