Process for the preparation of nitro diphenyl amine derivatives

Details Process for the preparation of nitro diphenyl amine derivatives Process for the preparation of nitro diphenyl amine derivatives

1979-11-19

1980-12-09

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260465D, 560 22, 560 27, 560 29, 560 31, 560 32, 564433, C07C 8760, C07C12178

Patent

active

042384079

ABSTRACT:
A process for the preparation of nitro-diphenyl amines is disclosed by decarboxylation of a urethane in the presence of a base at an elevated temperature using tetramethylene sulphone as reaction medium is disclosed. The urethane can be one formed by the reaction of a nitrophenol with an aromatic isocyanate.

REFERENCES:
patent: 3847990 (1974-11-01), Blahak

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