Process for producing 3-bromobenzoyl halides
AssigneeAlbemarble Corporation
InventorsGary D. Focht, W. Dirk Klobucar
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Abstract
Meta-bromination with suppression of para-bromination is achieved by forming a reaction mixture comprised of (i) bromine chloride, (ii) a bromination catalyst, and (iii) a benzoyl halide, and maintaining the temperature of the resultant reaction mixture at one or more temperatures above 0° C., but not greater than 30° C. The bromine chloride is preferably formed in situ, most preferably by sparging gaseous chlorine into a mixture of bromine, finely-divided iron, and benzoyl chloride.
Claims16
A process which comprises
- A) forming a reaction mixture comprised of (i) bromine chloride, (ii) a bromination catalyst, and (iii) a benzoyl halide;
- and
- B) maintaining the reaction mixture of A) at one or more temperatures above 0° C., but not greater than 30° C., such that meta-bromobenzoyl halide is formed.
A process which comprises
- A) forming a reaction mixture initially comprised of bromine chloride, finely-divided iron, and benzoyl halide;
- and
- B) maintaining the reaction mixture formed in A) at one or more temperatures above 0° C., but not greater than 30° C., such that meta-bromobenzoyl halide is formed.
A process which comprises contacting gaseous chlorine with a mixture initially comprised of bromine, finely-divided iron, and a benzoyl halide, and maintaining the temperature of the resultant mixture at one or more temperatures above 0° C., but not greater than 30° C., such that meta-bromobenzoyl halide is formed.
Dependencies are inferred from the claim text.