Process for the preparation of 2,3-dichloro-nitrobenzene

Details Process for the preparation of 2,3-dichloro-nitrobenzene Process for the preparation of 2,3-dichloro-nitrobenzene

1995-01-06

1995-12-12

Ramsuer, Robert W.

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

Organic compounds

Oxygen containing

568938, C07C20506

Patent

active

054751632

ABSTRACT:
2,3-dichloro-nitrobenzene can be prepared by nitration of 1,2-dichlorobenzene using an anhydrous mixture of phosphoric acid, sulphuric acid and nitric acid. The conditions according to the invention displace the ratio of 2,3,-dichloro-nitrobenzene and 3,4-dichloro-nitrobenzene in favor of the 2,3-isomer.

REFERENCES:
patent: 3957889 (1976-05-01), Milligan et al.
patent: 3979467 (1976-09-01), Schumacher
patent: 4420645 (1983-12-01), Vaidyanathan
patent: 4453027 (1984-06-01), Vaidyanathan
patent: 4476335 (1984-10-01), Takenaka et al.
Pine et al., "Organic Chemistry", 4th Ed. (1980) McGraw-Hill Books, N.Y., pp. 607-618.
Chemical Abstracts, vol. 81, No. 15, 140CT74, Columbus, Ohio, abstract No. 90730n, p. 400, (1974).

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