Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1991-01-14
1992-05-26
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
568312, 568433, 568585, 568586, 568635, 568639, 548633, 558420, 560 64, 562473, 562886, 562887, C07D30777, C07C 43225
Patent
active
051170027
ABSTRACT:
A process for the production of diaryl ethers which comprises heating, to a temperature of 80.degree. C. to 220.degree. C., a compound of the formula ##STR1## wherein X and Y are selected from the group consisting of H, CN, CO.sub.2 H, CHO, NO.sub.2, and CF.sub.3, provided that both X and Y may not simultaneously be H, in a solvent, in the presence of an inorganic base selected from the group consisting of the alkali metal carbonates, bicarbonates, and hydroxides, and in the presence of a catalyst selected from the group consisting of benzoic acid, substituted benzoic acids, C2-C4 aliphatic carboxylic acids, and alkali metal salts of said acids.
REFERENCES:
patent: 4558164 (1985-12-01), Jones et al.
patent: 4933469 (1990-06-01), Berhahl et al.
R. L. Markezich & O. S. Zamek J. Org. Chem. vol. 42, 3431 (1977).
Buchanan Robert A.
Stults Jeffrey S.
Fuerle Richard D.
Mars Howard T.
Occidental Chemical Corporation
Tao James F.
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