Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1979-09-10
1983-08-30
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
562434, 562438, 562416, C07C 7946
Patent
active
044018282
ABSTRACT:
This process relates to the oxidation of phenoxytoluenes to phenoxybenzoic acids utilizing a hydrogen peroxide activated, bromide promoted cobalt catalyst which can be performed at atmospheric pressure and at moderate temperatures. These phenoxybenzoic acids can then be esterified and selectively nitrated to give the corresponding 2-nitro-5-substituted)phenoxybenzoic acid esters. Alternatively the acids can be nitrated and then esterified.
REFERENCES:
patent: 2245528 (1941-06-01), Loder
patent: 2992271 (1961-06-01), Hay
patent: 3139452 (1964-06-01), Hay
patent: 3708531 (1973-01-01), Croce
patent: 3907866 (1975-09-01), Theissen
Killos Paul J.
Rohm and Haas Company
Strobaugh Terence P.
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