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2 083 556

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C1

(51)

IPC

(21) (22)

Application

5047540/04, 1992-06-15

(22)

Actual filing date

1992-06-15

(45)

Published

1997-07-10

(72)

Inventor

Militsin I.A.Zharikov L.K.Karlina L.M.Reshetnikov A.V.

(73)

Holder

Cheboksarskoe Proizvodstvennoe Ob"Edinenie

PROCESS FOR PREPARING ANTHRANILIC ACID ESTER Russian patent published in 1997 - IPC

Abstract RU 2083556 C1

FIELD: perfume and food industries, more particularly preparation of aromatic carboxylic acid esters, more specifically anthranilic acid esters useful in perfume and food industries and in preparing chemical agents for plant protection. SUBSTANCE: synthesis is carried out by esterification of anthranilic acid with alcohol in excessive amount of mineral or sulfonic acid. Anthranilic acid ester salt of general formula: R1•NH2C6H4COOR (wherein R is ethyl, methyl, R1 is sulfonic acid), is then isolated from reaction mixture, said salt is dissolved in water and the desired product is extracted from the resulting solution with non polar solvent in the presence of anthranilic acid of formula: R1•NH2C6H4COOH which is used in the esterification stage as initial product. EFFECT: more efficient preparation process. 2 cl

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RU 2 083 556 C1

Authors

Militsin I.A.

Zharikov L.K.

Karlina L.M.

Reshetnikov A.V.

Dates

1997-07-10—Published

1992-06-15—Filed

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