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2 069 656

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Application

94035335/04, 1994-09-22

(22)

Actual filing date

1994-09-22

(45)

Published

1996-11-27

(72)

Inventor

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

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD FOR PRODUCTION OF 4-NITRO-1,3-DIAMINOBENZENE Russian patent published in 1996 - IPC

Abstract RU 2069656 C1

FIELD: organic chemistry. SUBSTANCE: desired product is prepared by acetylation of 1,3-diaminobenzene with the help of acetic anhydride. Then nitration thus prepared N,N1-diacet-1,3-diaminobenzene followed by hydrolysis 4-nitro-N,N1-diacet-1,3-diaminobenzene takes place. Methylene chloride is used as a solvent at acetylation and nitration stages. Hydrolysis is carried out in 6-8 % aqueous solution of NaOH. EFFECT: simplifies the process, decreases amount of sulfate waste.

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RU 2 069 656 C1

Authors

Romanskij I.A.

Salov B.V.

Shner V.F.

Khokhlova V.M.

Zemljakova T.I.

Dates

1996-11-27—Published

1994-09-22—Filed

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