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Application

4638768/04, 1989-01-16

(22)

Actual filing date

1989-01-16

(45)

Published

1998-04-10

(72)

Inventor

Romanenko I.V.Baranov S.N.Kochkanjan R.O.Shejnkman A.K.

4-(BENZIMIDAZOLYL-2')-QUINOLINE DERIVATIVES AS INHIBITORS OF STEEL CORROSION IN ACID MEDIA Russian patent published in 1998 - IPC

Abstract SU 1617904 A1

FIELD: organic chemistry. SUBSTANCE: invention relates to heterocyclic compounds, in part, derivatives of 4-(benzimidazolyl-2')-quinoline of the formula: where: 1) R - H2O;; 2) (C2H5)2SO4. Compound (2) is synthesized by reaction of 2-(quinolyl-4)-benzimidazole hydrate with diethylsulfate in acetone medium at the room temperature. Compound (1) is synthesized by condensation of o-phenylenediamine with 4-quinolinecarboxylic acid in the presence of pyrophosphoric acid. The yield, %; m. p., C; empirical formula: 1) 72; 136; C16H11N3•H2O;; 2) 54; 192-193; C20H21N3SO4.. At concentration 0.05-0.8 g/l inhibitory activity of synthesized compounds is 90% at 30-90 C. Chemical and mechanical stability of polystyrene composition is improved. EFFECT: improved method of synthesis, increased yield. 4 tbl

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SU 1 617 904 A1

Authors

Romanenko I.V.

Baranov S.N.

Kochkanjan R.O.

Shejnkman A.K.

Dates

1998-04-10—Published

1989-01-16—Filed

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