Process for the synthesis of 1,3-diamino-4,6-dinitrobenzene

Details Process for the synthesis of 1,3-diamino-4,6-dinitrobenzene Process for the synthesis of 1,3-diamino-4,6-dinitrobenzene

2008-12-16

2011-12-06

Katakam, Sudhakar (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S305000, C564S306000, C564S441000, C564S415000

Reexamination Certificate

active

08071812

ABSTRACT:
A process is provided for the preparation of 1,3-diamino-4,6-dinitrobenzene by amination of 1,3-dihalo-4,6-dinitrobenzene. The presence of water advantageously results in a highly pure product, free or essentially free of glycol ether impurities.

REFERENCES:
patent: 3783137 (1974-01-01), Gerber
patent: 2003-292476 (2003-10-01), None
Boyer et al, Journal of the American Chemical Society, 1960, 82, 2213-15.
Knoblock et al, Chemische Berichte, 1958, 91, 2562-6.
Blanksma, Chemisch Weekblad, 1913, 9, 968-73.
Boyer et al., The Preparation of 6,7-Disubstituted Quinoxalines, J. Am. Chem. Soc., 1960, vol. 82:2213-2215.
Knobloch et al., Synthese Von 2.6-Disubstituierten Benzo[1.2.4.5]Bisimidazolen, Chem. Ber., 1958, vol. 91:2562-2566.
U.S. Appl. No. 12/335,997, filed Dec. 16, 2008, Applicant Joachim C. Ritter.
R. Nietzki et al., Synthese Von Symmetrischem Tetramidobenzol Mittels Dinitrodichlorbenzol, 1897, vol. 30:1666-1669.

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