Process of preparing metachlorobenzotrifluoride

Details Process of preparing metachlorobenzotrifluoride Process of preparing metachlorobenzotrifluoride

1985-03-11

1987-09-01

Evans, J. E.

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

Organic compounds

Halogen containing

570147, C07C 1712

Patent

active

046910662

ABSTRACT:
In the preparation of m-chlorobenzotrifluoride (m-CBTF) by reaction between benzotrifluoride and chlorine gas, a combination of a chloride of a metal having a valence of 3 to 6 and a small amount of iodine is used as catalyst. Alternative to iodine use can be made of an iodide that liberates iodine in the presence of chlorine. The catalyst exhibits high selectivity for m-CBTF and is effective for increasing the ratio of m-CBTF to p-CBTF in the reaction product.

REFERENCES:
patent: 2707197 (1955-04-01), Souillard
patent: 3234292 (1966-02-01), Robota et al.
patent: 4155940 (1979-05-01), Marhold et al.
Groggins, Unit Processes in Organic Synthesis, Halogenation, pp. 237, 238, 265, 266.

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