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2 068 841

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C1

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IPC

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Application

94012497/04, 1994-04-08

(22)

Actual filing date

1994-04-08

(45)

Published

1996-11-10

(72)

Inventor

Romanskij I.A.Salov B.V.Shner V.F.Khokhlova V.M.Zemljakova T.I.Gorelik M.V.Shtejman V.Ja.

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD OF SYNTHESIS OF 4-NITRO-2-AMINOANISOLE Russian patent published in 1996 - IPC

Abstract RU 2068841 C1

FIELD: chemical technology. SUBSTANCE: 4-nitro-2-aminoanisole used as semiproduct in dye production is synthesized by 2-aminoanisole nitration with a mixture of nitric and sulfuric acids in medium of 70-80% sulfuric acid at 0-5 C followed by purification of reaction product with activated carbon. Yield is increased to 80.6%, m. p. of product is 117-118 C. EFFECT: simplified process, increased yield, enhanced quality of product. 2 cl

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RU 2 068 841 C1

Authors

Romanskij I.A.

Salov B.V.

Shner V.F.

Khokhlova V.M.

Zemljakova T.I.

Gorelik M.V.

Shtejman V.Ja.

Dates

1996-11-10—Published

1994-04-08—Filed

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