Nitrosation of aromatic compounds

Details Nitrosation of aromatic compounds Nitrosation of aromatic compounds

1977-12-08

1980-11-04

Lone, Werren B.

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

Organic compounds

Oxygen containing

423400, C07C 7924

Patent

active

042321751

ABSTRACT:
Aromatic compounds in an acidic, aqueous solution can be economically nitrosated by treatment with the hydration products of oxides of nitrogen at a temperature in the range of -15.degree. C. to 10.degree. C. The oxides of nitrogen are generated as a gas from a separate solution or slurry by the reaction of an alkali metal nitrate with a strong mineral acid at a temperature in the range of 15.degree. C. to 35.degree. C. This method of nitrosation employs relatively inexpensive reagents, but can be carried on continuously and produces unexpectedly high yield of para-nitrosated product from a monosubstituted starting material.

REFERENCES:
patent: 2225358 (1940-12-01), Teter
patent: 3320324 (1967-05-01), Kavka
patent: 3510527 (1970-05-01), Prosser
patent: 3517075 (1970-06-01), Callister
patent: 3519693 (1970-07-01), Harvey
patent: 3714267 (1973-01-01), Baldwin
patent: 3770834 (1973-11-01), Prosser
patent: 3917719 (1975-11-01), Baldwin

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