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2 030 396

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C1

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IPC

(21) (22)

Application

4876758/04, 1990-10-22

(22)

Actual filing date

1990-10-22

(45)

Published

1995-03-10

(72)

Inventor

Bakibaev A.A.Shtrykova V.V.Tignibidina L.G.Filimonov V.D.

(73)

Holder

Individual'Noe Chastnoe Predprijatie

METHOD OF SYNTHESIS OF 5-CHLORO-2-AMINO-SUBSTITUTED BENZHYDRYLUREAS Russian patent published in 1995 - IPC

Abstract RU 2030396 C1

FIELD: organic chemistry. SUBSTANCE: new method of synthesis of novel early not described derivatives of 5-chloro-2-amino-substituted benzhydrylureas. Reagent 1: urea. Reagent 2: 5-chloro-2-amino-substituted benzhydrols. Reaction conditions: reaction is carried out in concentrated sulfuric acid at the ratio of reagent 1 and 2 and sulfuric acid = (8-9):1:(4-4.3). Yield is 70-80%. Synthesized compounds were used for medicinal preparations preparing. EFFECT: improved method of synthesis. 2 tbl

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RU 2 030 396 C1

Authors

Bakibaev A.A.

Shtrykova V.V.

Tignibidina L.G.

Filimonov V.D.

Dates

1995-03-10—Published

1990-10-22—Filed

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