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2 050 349

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C1

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IPC

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Application

5039233/04, 1992-05-28

(22)

Actual filing date

1992-05-28

(45)

Published

1995-12-20

(72)

Inventor

Bakibaev A.A.Tignibidina L.G.Filimonov V.D.Bychkov I.A.Sologub A.P.Novozheeva T.P.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD FOR PRODUCTION OF METACHLORBENZHYDRYL FORMAMIDE Russian patent published in 1995 - IPC

Abstract RU 2050349 C1

FIELD: organic chemistry. SUBSTANCE: urea or N-methyl urea in 94-99.7 HOOC is used as reagent 1, chlor-substituted benzophenone being used as reagent 2. Molar ratio of metachlorbenzophenon:urea(or N-methyl urea):HOOC is 1: 8.0(1.5-3.5):8.5-15. Said reaction is carried out by heating initially at 120 C, then at 185 C. EFFECT: improves efficiency of method. 4 tbl

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RU 2 050 349 C1

Authors

Bakibaev A.A.

Tignibidina L.G.

Filimonov V.D.

Bychkov I.A.

Sologub A.P.

Novozheeva T.P.

Dates

1995-12-20—Published

1992-05-28—Filed

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