Preparation of dicyanobenzenes by ammonoxidation

Details Preparation of dicyanobenzenes by ammonoxidation Preparation of dicyanobenzenes by ammonoxidation

1994-02-08

1996-09-10

Ramsuer, Robert W.

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

Organic compounds

Nitriles

558328, C07C25551

Patent

active

055547826

ABSTRACT:
A process for the preparation of dicyanobenzenes of the formula ##STR1## in which x denotes hydroxy, C.sub.1 -C.sub.4 alkoxy, nitro, amino, mono- or di-(C.sub.1 -C.sub.4 alkyl)amino, phthalimido or a nitrogenous saturated 5-membered or 6-membered heterocyclic radical, which is attached to the phenyl ring via a nitrogen atom
in which a xylene of the formula ##STR2## in which x has the meaning stated above,
is oxidized at a temperature of from 400.degree. to 500.degree. C. with oxygen in the presence of ammonia and a catalyst.

REFERENCES:
patent: 3783142 (1974-01-01), Bakke et al.
patent: 3839398 (1974-10-01), Leto et al.
patent: 4137254 (1979-01-01), Larkin
patent: 4178304 (1979-12-01), Litvishkov et al.
patent: 4814479 (1989-03-01), Engelbach et al.

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