Processes for the preparation of nitrosamine-free N,N-disubstitu

Details Processes for the preparation of nitrosamine-free N,N-disubstitu Processes for the preparation of nitrosamine-free N,N-disubstitu

1984-12-12

1987-01-20

Warren, Charles F.

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

Organic compounds

Amino nitrogen containing

564497, 564441, 564411, 564414, C07C 8526

Patent

active

046380906

ABSTRACT:
Processes for the preparation of nitrosamine-free N,N-disubstituted nitroaromatic amines by degradation of their nitrosamine components formed during their preparation, and by stabilization of the products against renewed formation of nitrosamines, by treating the amines in liquid or molten form with a sulfonic acid, where necessary in the presence of inert organic solvents or diluents.

REFERENCES:
patent: 4120905 (1978-10-01), Cannon et al.
patent: 4127610 (1978-11-01), Eizember
patent: 4136117 (1979-01-01), Diehl et al.
patent: 4185035 (1980-01-01), Eizember et al.
patent: 4226789 (1980-10-01), Eizember et al.
Nikitenkova, L. P. et al., "Kinetics and Mechanism of the Fischer-Hepp Rearrangement" in J. of Gen. Chem. of USSR, vol. 49, No. 3, Pt. 2, pp. 598-601, Sep. 10, 1979.

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