Dinitroaniline purification with inorganic acid halides

Details Dinitroaniline purification with inorganic acid halides Dinitroaniline purification with inorganic acid halides

1978-02-17

1980-01-22

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

71121, 2603977R, 260647, 260583CC, 2603976, C07C 8524, C07C 8526, C07C14380

Patent

active

041850351

ABSTRACT:
The present invention is directed to a process for reducing the concentration of nitrosamines in dinitroanilines, which comprises treating a nitrosamine-containing dinitroaniline with PCl.sub.3, PCl.sub.5, PBr.sub.3, POCl.sub.3, SCl.sub.2, SOCl.sub.2, SO.sub.2 Cl.sub.2, SOBr.sub.2, or TiCl.sub.4.

REFERENCES:
Biggs et al., "J. Chem. Soc., Perkin Trans. II," pp. 107-111 (1975).
Biggs et al., "J. Chem. Soc., Perkin Trans. II," pp. 601-605 (1976).
Lunt et al., "Anal. Lett.," 6(4), pp. 369-372 (1973).
Fridman et al., "Russian Chem. Rev.", 40(1), pp. 34-50 (1971).
Smith, "The Chem. of Open-Chain Org. Nitrogen Cmpds.," pp. 470-474 (1966).
Sidgwick, "The Org. Chem. of Nitrogen," pp. 592-594 (1966).

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