Method for producing 2-amino-5-iodobenzoic acid

Details Method for producing 2-amino-5-iodobenzoic acid Method for producing 2-amino-5-iodobenzoic acid

2005-08-03

2008-05-27

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

07378546

ABSTRACT:
A method for producing 2-amino-5-iodobenzoic acid which comprises bringing 2-aminobenzoic acid (A) and molecular iodine (B) into reaction with each other in the liquid phase in the presence of an oxidizing agent. Hydrogen peroxide is preferable as the oxidizing agent. This method does not require a step for purifying 2-amino-5-iodobenzoic acid or a step for recovering iodine, and 2-amino-5-iodobenzoic acid having excellent quality can be produced economically advantageously with a great yield. The product can be advantageously used as an intermediate for drugs, an agricultural chemical and a raw material for functional chemicals.

REFERENCES:
patent: 3991105 (1976-11-01), Wille
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patent: 0130224 (1985-01-01), None
patent: 05-058974 (1993-03-01), None
patent: 2004-043474 (2004-02-01), None
Klemme et al, Journal of Organic Chemistry, Synthesis of Iodohippuric Acids, I. 2,5-, 3,5- and 3,4-Diiohippuric Acids, 1940, 5, pp. 227-234.

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