Process for the preparation of halogenated aromatic primary amin

Details Process for the preparation of halogenated aromatic primary amin Process for the preparation of halogenated aromatic primary amin

1988-12-19

1990-10-02

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564415, 564416, C07C20936

Patent

active

049609360

ABSTRACT:
The catalytic hydrogenation of halogenated nitro aromatics using Raney nickel in the presence of a formamidine salt as dehalogenation inhibitor affords halogenated aromatic primary amines in high yields and high chemical purity within short reaction times even at elevated temperatures.

REFERENCES:
patent: 3361819 (1968-01-01), Kosak et al.
patent: 3989756 (1976-11-01), Fujise et al.
patent: 4059627 (1977-11-01), Kritzler et al.
patent: 4070401 (1978-01-01), Hirai et al.
patent: 4267324 (1981-05-01), Sparks et al.
patent: 4375550 (1983-03-01), Bird et al.
Grant & Hackh's Chemical Dictionary, Fifth Edition, p. 243, "Formamidine", 1987.
Trumpler et al., Helv. Chim. Acta. vol. 39, pp. 407-416 (1959).

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