Purification process of 3,3'-dinitrodiphenyl compounds

Details Purification process of 3,3'-dinitrodiphenyl compounds Purification process of 3,3'-dinitrodiphenyl compounds

C - Chemistry, Metallurgy

07

C

260/612.9

C07C 201/16 (2006.01)

Patent

CA 1258872

ABSTARCT A crude 3,3'-dinitrodiphenyl compound selected from 3,3'-dinitrodiphenylsulfone or 3,3'-dinitro- benzophenone is purified by reacting the crude 3,3'-dinitrodiphenyl compound with a lower alcohol in the presence of a base so as to convert practically the isomer or isomers, which contain one or more nitro groups at the ortho- or/and para-positions, only into the corresponding alkoxy compound or compounds thereof and then separating the alkoxy compound or compounds.

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