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2 074 169

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C1

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IPC

(21) (22)

Application

95107453/04, 1995-05-10

(22)

Actual filing date

1995-05-10

(45)

Published

1997-02-27

(72)

Inventor

Matveev L.G.Bol'Shakov I.I.Sheverdova N.Ju.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD OF SYNTHESIS OF PARA-NITROBENZOIC ACID ETHYL ESTER Russian patent published in 1997 - IPC

Abstract RU 2074169 C1

FIELD: organic chemistry, chemical technology. SUBSTANCE: product: p-nitrobenzoic acid ethyl ester, empirical formula is C9H9NO4, yield is 98%, basic substance content is 99.7%, m. p. is 56-57 C. Synthesis is carried out by esterification of p-nitrobenzoic acid with ethanol at boiling in the presence of silicon tetrachloride as catalyst taken at molar ratio to p-nitrobenzoic acid = (0.1-0.2): 1. The end product is extracted from reaction mixture with solvent taken from the order of chlorinated methanes and isolated from extract by the known procedures. Synthesized compound is used in chemical-pharmaceutical industry as semiproduct for synthesis of anesthesia and novocaine. EFFECT: improved method of synthesis. 2 cl

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RU 2 074 169 C1

Authors

Matveev L.G.

Bol'Shakov I.I.

Sheverdova N.Ju.

Dates

1997-02-27—Published

1995-05-10—Filed

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