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2 313 526

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(51)

IPC

C07D471/04(2006-01-01)

(21) (22)

Application

2006115385/04, 2006-05-04

(24)

Start date

2006-05-04

(22)

Actual filing date

2006-05-04

(45)

Published

2007-12-27

(72)

Inventor

Bulgakov Ramil' GarifovichKuleshov Sergej PavlovichMakhmutov Ajnur RashitovichDzhemilev Usein Memetovich

(73)

Holder

Institut Neftekhimii I Kataliza Ran

METHOD FOR PREPARING 2,3-DIALKYL-7,8-BENZO-1,6-NAPHTHYRIDINES Russian patent published in 2007 - IPC C07D471/04

Abstract RU 2313526 C1

FIELD: organic chemistry, organic synthesis, chemical technology.

SUBSTANCE: method involves interaction of 4-aminoquinoline with aliphatic aldehydes in the presence of terbium trichloride TbCl₃ x 6 H₂O or terbium nitrate Tb(NO₃)₃ x 6 H₂O as a crystal hydrate catalyst taken in the mole ratio 4-aminoquinoline : R-CH₂CHO : Tb = 45:100:1.2, respectively, under atmosphere pressure, temperature 100⁰C, for 4 h in dimethylformamide (DMFA) medium as a solvent. Substituted 2,3-dialkyl-7,8-benzo-1,6-naphthyridines are used as corrosion inhibitors and in fine organic synthesis also in preparing physiologically active substances.

EFFECT: improved method of synthesis.

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RU 2 313 526 C1

Authors

Bulgakov Ramil' Garifovich

Kuleshov Sergej Pavlovich

Makhmutov Ajnur Rashitovich

Dzhemilev Usein Memetovich

Dates

2007-12-27—Published

2006-05-04—Filed