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2 068 407

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C1

(51)

IPC

(21) (22)

Application

5054414/04, 1992-07-14

(22)

Actual filing date

1992-07-14

(45)

Published

1996-10-27

(72)

Inventor

Gorelik M.V.Andrievskij A.M.Shtejman V.Ja.

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

PROCESS FOR PREPARING 4-AND/OR 6-NITRO-2-AMINOPHENOLS Russian patent published in 1996 - IPC

Abstract RU 2068407 C1

FIELD: semiproducts in synthesis of dyes. SUBSTANCE: product: 4 and/or 6-nitro-2-aminophenols. Reagent 1: 2- aminophenol. Reagent 2: nitrating mixture containing equimolar amount of nitric acid or salt thereof in sulfuric acid having concentration of 78-85%. Reaction conditions: 0-2 C. EFFECT: more efficient preparation process.

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RU 2 068 407 C1

Authors

Gorelik M.V.

Andrievskij A.M.

Shtejman V.Ja.

Dates

1996-10-27—Published

1992-07-14—Filed

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