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2 044 724

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C1

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IPC

(21) (22)

Application

92014655/04, 1992-12-25

(22)

Actual filing date

1992-12-25

(45)

Published

1995-09-27

(72)

Inventor

Mel'Nikov E.B.Suboch G.A.Beljaev E.Ju.

(73)

Holder

Krasnojarskaja Gosudarstvennaja Tekhnologicheskaja Akademija

PROCESS FOR PREPARING AROMATIC NITROSO COMPOUNDS Russian patent published in 1995 - IPC

Abstract RU 2044724 C1

FIELD: chemistry of aromatic nitroso compounds. SUBSTANCE: the process comprises oxidizing arylamines for 4 hours, contacting an arylamine solution in an organic solvent such as chloroform, benzene or a mixture thereof, dichloroethane (the volumetric ratio is 1:1, 1:4 and 1:2) with aqueous solutions of hydrogen peroxide, sodium tungstate dihydrate and phosphoric acid (the molar ratio is 1: 8.8: 0.1:0.36) at 50-60 C. EFFECT: more efficient preparation process. 2 tbl

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RU 2 044 724 C1

Authors

Mel'Nikov E.B.

Suboch G.A.

Beljaev E.Ju.

Dates

1995-09-27—Published

1992-12-25—Filed

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