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A1

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Application

3999766/04, 1985-12-27

(22)

Actual filing date

1985-12-27

(45)

Published

1995-02-27

(72)

Inventor

Glushkov R.G.Levshin I.B.Marchenko N.B.Chistjakov V.V.

METHOD OF SYNTHESIS OF 4-QUINOLONE-3-CARBOXYLIC ACID DERIVATIVES Russian patent published in 1995 - IPC

Abstract SU 1341944 A1

FIELD: organic chemistry. SUBSTANCE: product: derivatives of compounds of the general formula where - -CH2-CH2-N(C2H5)2,; isopropyl. Synthesis is carried out from enamine of 1-nitro-2,4-dichloro-5Q-phenyl where Q - Q=-C(O)-C(K)-C(O)OC2H5 at K= R-NH-CH= and R as indicated above which is subjected for reaction with sodium hydride in the medium of anhydrous aromatic hydrocarbon in the mixture with aprotonic dipolar solvent at the ratio 10: (0.5-1.5), at (-10)-(+30) C. Method provides the yield of the end product - 70-72% . Synthesized compounds can be used as semiproducts for synthesis of bioactive substances. EFFECT: increased yield, enlarged assortment of the end products. 1 tbl

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SU 1 341 944 A1

Authors

Glushkov R.G.

Levshin I.B.

Marchenko N.B.

Chistjakov V.V.

Dates

1995-02-27—Published

1985-12-27—Filed

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