Process for the preparation of 2-(2-bromo-2-nitroethenyl)furan

Details Process for the preparation of 2-(2-bromo-2-nitroethenyl)furan Process for the preparation of 2-(2-bromo-2-nitroethenyl)furan

1991-04-16

1992-08-11

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30740

Patent

active

051380765

ABSTRACT:
Bromonitroethenylfuran (BNEF) is prepared from furfural in a two-step process. A primary amine is reacted with furfural in an organic solvent at the reflux temperature of the solvent to form the Schiff base. The organic solvent and the water formed in the foregoing reaction are removed from the Schiff base, which is then dissolved in a polar, water-miscible solvent. Bromonitromethane is added to the Schiff base solution and reacts with the Schiff base to form BNEF, which can be readily isolated by precipitation.

REFERENCES:
patent: 4743617 (1988-05-01), Bargar et al.
patent: 4962212 (1990-10-01), Smith
Khim. Farm. Zh., vol. 6 (10), pp. 629-632 (1972), Z. N. Nazarova and G. F. Potemkin.
Zh. Org. Khim., vol. 7, pp. 1078-1082 (1971), Gruntfest et al.
Zh. Org. Khim., vol. 8, pp. 405-411 (1972), Guntfest et al.

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