Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1982-11-30
1984-10-09
Sebastian, Leland A.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C07C 7912
Patent
active
044763352
ABSTRACT:
In a process for the preparation of mononitrochlorobenzene by nitration of chlorobenzene using a mixed acid of nitric acid and phosphoric acid, the nitration reaction is carried out by using a molar ratio of nitric acid to chlorobenzene of not more than equimol in the presence of a concentrated phosphoric acid as the phosphoric acid component at temperatures of 50.degree.-120.degree. C. while maintaining the concentration of phosphoric acid to 72.4 weight % as P.sub.2 O.sub.5 or more during the reaction.
REFERENCES:
patent: 3957890 (1976-05-01), Schumacher
patent: 3979467 (1976-09-01), Schumacher
Kanemoto Joshiro
Nishida Takeshi
Takenaka Shinji
Jeffers Albert L.
Miller Douglas L.
Mitsui Toatsu Chemicals Inc.
Sebastian Leland A.
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