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2 092 478

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IPC

(21) (22)

Application

5039234/04, 1992-05-28

(22)

Actual filing date

1992-05-28

(45)

Published

1997-10-10

(72)

Inventor

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

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD OF PREPARING M-CHLORODIPHENYL METHYLUREA Russian patent published in 1997 - IPC

Abstract RU 2092478 C1

FIELD: chemical industry. SUBSTANCE: present invention describes method of preparing m-chlorodiphenyl methylurea. Reagent 1: m-chlorodiphenyl methane C₆H₅-CH(X)-C₆H₅, X is OH, OCOCH3, OCOCF₃, OSO₂Ph, NH₂, NH₂•HCl, NHCOH. Reagent 2: urea. Reaction conditions: in the presence of mineral acid selected from H₂SO₄, HCl and HClO₄ at reagent 1 to reagent 2 molar ratio of 1: (1.1-8.0):(0.01-1.5) at 40-160 C. EFFECT: more efficient preparation method. 2 cl, 3 tbl

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RU 2 092 478 C1

Authors

Bakibaev A.A.

Tignibidina L.G.

Shtrykova V.V.

Filimonov V.D.

Bychkov I.A.

Sologub A.P.

Novozheeva T.P.

Dates

1997-10-10—Published

1992-05-28—Filed