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2 041 212

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C1

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IPC

(21) (22)

Application

5058229/04, 1992-08-07

(22)

Actual filing date

1992-08-07

(45)

Published

1995-08-09

(72)

Inventor

Borovik V.P.Sedova V.F.Shkurko O.P.

(73)

Holder

Novosibirskij Institut Organicheskoj Khimii So Ran

PROCESS FOR PREPARING 2,5-BIS(P-NITROPHENYL)PYRIMIDINE Russian patent published in 1995 - IPC

Abstract RU 2041212 C1

FIELD: chemistry of polymers. SUBSTANCE: the process comprises preparation of 2,5-bis(p- nitrophenyl)pyrimidine. Reaction conditions: Reagent 1 is (1-dimethylamino-3-dimethyl ammonium-2-(p- nitrophenyl)propene-1. Reagent 2 is nitrobenzylimidine hydrochloride. The process is carried out in the presence of bases in amounts that ensure complete or partial neutralization of only reagent 2 at a reagent 1 to reagent 2 to base ratio of 1:1.3: (0.325-1.3) on boiling in methanol for 2 hours. The yield is 47-95% mp is 287-290 C. The colour of the precipitate is light beige. EFFECT: more efficient preparation process.

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RU 2 041 212 C1

Authors

Borovik V.P.

Sedova V.F.

Shkurko O.P.

Dates

1995-08-09—Published

1992-08-07—Filed

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