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IPC

C07C211/52(2006-01-01)

C07C209/10(2006-01-01)

(21) (22)

Application

2012157049/04, 2012-12-25

(24)

Start date

2012-12-25

(22)

Actual filing date

2012-12-25

(45)

Published

2014-07-20

(72)

Inventor

Kazin Vjacheslav NikolaevichSibrikov Sergej GeorgievichKuzhin Maksim BorisovichMitrofanova Galina PavlovnaKazina Ekaterina Gennad'EvnaSirik Andrej Vladimirovich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Universitet Im. P.G. Demidova"

METHOD OF OBTAINING 1,1-DICHLORO-2,2-BIS(3-NITRO-4-N, N-DIMETHYLAMINOPHENYL)ETHYLENE Russian patent published in 2014 - IPC C07C211/52 C07C209/10

Abstract RU 2522553 C1

FIELD: chemistry.

SUBSTANCE: invention relates to a one-stage method of obtaining 1,1-dichloro-2,2-bis(3-nitro-4-N,N,-dimethylaminophenyl)ethylene, which can be applied as an intermediate product in synthesis of soluble aromatic polyimides. The method consists in processing 1,1,1-trichloro-2,2-bis(3-nitro-4-chlorophenyl)ethane in N,N-dimethylformamide or N,N-dimethylacetamide with hydroxides of alkali metals at a temperature of 40-100°C. A molar ratio 1,1,1-trichloro-2,2-bis(3-nitro-4-chlorophenyl)ethane: NaOH (KOH):DMFA (DMAA) constitutes 1:4÷10:20÷30.

EFFECT: method makes it possible to obtain 1 said compound in one stage with the high output.

5 ex

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RU 2 522 553 C1

Authors

Kazin Vjacheslav Nikolaevich

Sibrikov Sergej Georgievich

Kuzhin Maksim Borisovich

Mitrofanova Galina Pavlovna

Kazina Ekaterina Gennad'Evna

Sirik Andrej Vladimirovich

Dates

2014-07-20—Published

2012-12-25—Filed