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2 074 166

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C1

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IPC

(21) (22)

Application

94021678/04, 1994-06-08

(22)

Actual filing date

1994-06-08

(45)

Published

1997-02-27

(72)

Inventor

Kunichan V.A.Sevodin V.P.Denisov Ju.N.Budaev I.D.Mirenkov V.A.Koshelev Ju.A.

(73)

Holder

Nauchno-Proizvodstvennoe Predprijatie

METHOD OF SYNTHESIS OF ISOVALERIC ACID Russian patent published in 1997 - IPC

Abstract RU 2074166 C1

FIELD: organic chemistry, chemical technology. SUBSTANCE: product: isovaleric acid, value n20D

= 1.402. Reagent 1: isoamyl alcohol. Reagent 2: higher nickel oxides. Process conditions: electrochemical regeneration on nickel-containing electrodes, in alkaline medium, at alternating current, at frequency 1-0.0001 Hz. Alkali and isoamyl alcohol were added during their utilization, alkali content is maintained at concentration 1-6%. Process operation is carried out by voltage value on electrodes and oxidation process is carried out at 20-80 C, at current density 0.05-0.1 A/cm2, at nickel concentration 5-10 g/l (as measured for nickel sulfate). After reaction termination the reaction mass is acidified to pH = 2.5-3.0 and isovaleric acid is isolated. Synthesized compound is used for synthesis of drugs and food additions preparing. EFFECT: improved method of synthesis. 1 tbl

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RU 2 074 166 C1

Authors

Kunichan V.A.

Sevodin V.P.

Denisov Ju.N.

Budaev I.D.

Mirenkov V.A.

Koshelev Ju.A.

Dates

1997-02-27—Published

1994-06-08—Filed

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