Chlorination and bromination of aromatic compounds at atmospheri

Details Chlorination and bromination of aromatic compounds at atmospheri Chlorination and bromination of aromatic compounds at atmospheri

1999-12-06

2000-09-12

Siegel, Alan

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

Organic compounds

Carboxylic acid esters

558425, 568323, 568656, 570206, 570207, 570210, C07C 6976, C07C25500, C07C 1700, C07C 4500

Patent

active

061180181

ABSTRACT:
Disclosed is a method of adding 1 to 4 chlorine or bromine atoms to an aromatic ring of compound that has at least one electron-withdrawing groups on that ring. The aromatic compound is reacted with a chlorinating agent or a brominating agent in the presence of about 0.1 to about 10 mole % of a Lewis acid catalyst and about 0.001 to about 0.1 equivalents of an iodine-containing cocatalyst at a temperature of ambient to about 100.degree. C.

REFERENCES:
patent: 4186153 (1980-01-01), Potts
Roberts and Caserio, Basic Principles of Org Chem, Jan. 1964.

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