Substituted bromofluorobenzene derivatives and process for its m

Details Substituted bromofluorobenzene derivatives and process for its m Substituted bromofluorobenzene derivatives and process for its m

1981-02-20

1984-05-01

Waltz, Thomas A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260544D, 562493, 568433, 568938, 570127, 570140, 570141, 570143, 570174, C07C12000, C07C 4755

Patent

active

044460759

ABSTRACT:
Substituted bromofluorobenzene, wherein the fluorine is in para-position and the bromine in meta-position to another substituent, is prepared by direct bromination of the corresponding fluorobenzene derivative. Bromination is advantageously carried out in the presence of a catalyst, preferably a metal or metal salt. The elementary bromine is used in an amount of 0.9 to 1.3 mols per mol of fluorobenzene derivative and the reaction temperature is between 20.degree. and 200.degree. C. The bromofluorobenzene derivatives are suitable for the synthesis of medicaments and plant protective agents.

REFERENCES:
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patent: 3371025 (1968-02-01), Tatlow et al.
patent: 3689559 (1972-09-01), Taylor et al.
patent: 4036887 (1977-07-01), Sheldon et al.
patent: 4218567 (1980-08-01), Manchand et al.
Recueil des Travaux Chimiques des Pays Bas, vol. 83, 1964, pp. 1142-1148.
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, vol. 263, 1966, pp. 145-148.
The Journal of Organic Chemistry, vol. 21, 1956, pp. 934-938.

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