Patent Number: 6,307,113

Title: Selective bromination of aromatic compounds

Abstract: Aromatic substrates such as fluorobenzene can be selectively brominated in high yield and conversion in short reaction periods by reacting the substrate with a brominating agent in a liquid reaction medium and in the presence of a catalyst composition formed by including in the medium a combination of (i) a shape selective HY or HM or zeolite catalyst, and (ii) at least one Lewis acid in a ratio of from 0.005 to 0.5 part by weight of (ii) per part by weight of (i). The bromination is performed at one or more temperatures in the range of 30 to C., and the amount of the zeolite is no more than about 10 grams per mole of aromatic substrate.

Inventors: Sabahi; Mahmood (Baton Rouge, LA)

Assignee: Albemarle Corporation

International Classification: C07B 39/00 (20060101); C07C 17/12 (20060101); C07C 17/00 (20060101); C07C 022/00 ()

Expiration Date: 10/23/2018