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2 057 136

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C1

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IPC

(21) (22)

Application

5042920/04, 1992-05-18

(22)

Actual filing date

1992-05-18

(45)

Published

1996-03-27

(72)

Inventor

Najdis F.B.Kopejkin V.V.Panarin E.F.Santurjan Ju.G.

(73)

Holder

Institut Vysokomolekuljarnykh Soedinenij Ran

METHOD OF SYNTHESIS OF 1,4-D(+)-GLUCAROLACTONE AND 6,3-D(+)-GLUCAROLACTONE Russian patent published in 1996 - IPC

Abstract RU 2057136 C1

FIELD: organic chemistry. SUBSTANCE: products: 1,4-D-(+)-glucarolactone and 6,3-D-(+)-glucarolactone. Reagent 1: acid potassium salt of D-glucaric acid. Reagent 2: cationite in H+-form. Reaction conditions: in the medium of aqueous 50-80% (by volume) C1-C3-aliphatic alcohol at 25-40 C followed by concentration by evaporation before quantitative separation of C1-C3-aliphatic alcohol, separation of D-glucaric acid by filtration of acid potassium salt of acid precipitated at concentrate alkalinization and isolation of 1,4-isomer by extraction with C4-C5-aliphatic alcohol, and 3,6-isomer is isolated by crystallization from an aqueous layer. Synthesized compounds were used in medicine. EFFECT: improved method of synthesis. 5 tbl

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RU 2 057 136 C1

Authors

Najdis F.B.

Kopejkin V.V.

Panarin E.F.

Santurjan Ju.G.

Dates

1996-03-27—Published

1992-05-18—Filed

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