Process for the nitration of haloaromatics

Details Process for the nitration of haloaromatics Process for the nitration of haloaromatics

1973-08-20

1976-05-18

Sebastian, Leland A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

G07C 7912

Patent

active

039578909

ABSTRACT:
It was found that the process for the nitration of halogenated aromatic compounds is improved by carrying out the nitration in the presence of a phosphorus compound in an amount sufficient to produce an ortho-directive effect. The addition of polyvalent metal elements such as vanadium, molybdenum, tungsten, and other elements that have the capability of existing in a variety of oxidation states, to a mixture of phosphoric and nitric acid improves the yield of the nitrohaloaromatics without affecting the isomer ratio.

REFERENCES:
patent: 3140319 (1964-07-01), Sparks

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