Process for the production of substituted nitroaryl compounds

Details Process for the production of substituted nitroaryl compounds Process for the production of substituted nitroaryl compounds

1980-06-17

1982-07-13

Gron, Teddy S.

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

Organic compounds

Oxygen containing

260465B, 260688, 568938, 568939, 568940, 564218, 564223, C07C 7602, C07B 1100, C07C 7912, C07C 7910, C07C 7946

Patent

active

043396186

ABSTRACT:
The invention relates to a process for the production of nitroaryl compounds which are at least monosubstituted, by nitration of aryl compounds which are at least monosubstituted, which process comprises carrying out the nitration in a two-phase system which consists of an inorganic phase consisting of sulfuric acid having a concentration of at least 80% and an organic phase consisting of an inert organic liquid in which the nitration product is almost insoluble in the presence of sulfuric acid, at a temperature in the range from -30.degree. to 100.degree. C., with nitric acid as nitrating agent.
The novel process can be generally employed for aryl compounds which are at least monosubstituted. The corresponding nitroaryl compounds are obtained in high yield and isomeric purity.

REFERENCES:
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patent: 2810000 (1957-10-01), Schenck
patent: 3086062 (1963-04-01), Oltay
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patent: 3183275 (1965-05-01), Sparks
patent: 3822251 (1974-07-01), Vrolyk et al.
patent: 3927127 (1975-12-01), Damiano
patent: 3981933 (1976-09-01), Cook et al.
patent: 4036838 (1977-07-01), Vogel et al.
C.A., vol. 84, 104, 690a (1976).

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