METHOD OF SYNTHESIS OF PARA-AMINOBENZOIC ACID ETHYL ESTER Russian patent published in 2003 - IPC

Abstract RU 2203885 C2

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to the improved method of synthesis of p-aminobenzoic acid ethyl ester. Method involves reduction of p- nitrobenzoic acid ethyl ester with hydrogen in the presence of carbon-base palladium-triphenylphosphine catalyst being reductions are carried out many times in a single catalyst charge. Invention provides mild conditions of process that exhibits good effect on catalyst working time. EFFECT: simplified and time reduced reduction process, improved quality of product. 4 cl, 2 ex

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RU 2 203 885 C2

Authors

Obraztsova I.I.

Efimov O.A.

Eremenko N.K.

Solodov G.A.

Volkhonskij M.G.

Dates

2003-05-10—Published

2001-08-08—Filed