METHOD OF SYNTHESIS OF PARA-AMINOBENZOIC ACID ETHYL ESTER

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 r...

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Hauptverfasser:	EREMENKO N.K, SOLODOV G.A, VOLKHONSKIJ M.G, OBRAZTSOVA I.I, EFIMOV O.A
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:	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