Method for making 4,4'-dihydroxydiphenyl ether

Details Method for making 4,4'-dihydroxydiphenyl ether Method for making 4,4'-dihydroxydiphenyl ether

1986-01-23

1987-01-20

Helfin, Bernard

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

Organic compounds

Oxygen containing

568639, C07C 4126, C07C 43295

Patent

active

046380990

ABSTRACT:
A method for making 4,4'-dihydroxydiphenyl ether from diphenyl ether by oxidatively iodinating diphenyl ether to 4,4'-diiododiphenyl ether and/or 4-hydroxy-4'-iododiphenyl ether, hydrolyzing this product with a base, recovering iodine from the solution containing iodide, and recycling the iodine to the iodination step.

REFERENCES:
patent: 2835700 (1958-05-01), Boyle et al.
patent: 3886218 (1975-05-01), Biller et al.
patent: 3920386 (1976-12-01), Stamatoff
patent: 4326088 (1982-04-01), Braus
patent: 4582944 (1986-04-01), Taniguchi et al.
Chem. Abstr. 78, 29358u.
Chem. Abstr. 55, 2602a.

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