Process for the preparation of diphenyl ethers

Details Process for the preparation of diphenyl ethers Process for the preparation of diphenyl ethers

1978-07-31

1979-12-18

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

568585, 568586, 260465E, 260465F, 260465G, 260607AR, 260609F, 2605705P, 260568, 2605705S, C07C 4100

Patent

active

041794613

ABSTRACT:
In a process for the preparation of a diphenyl ether substituted in the 4,4'-position and/or the 2,2'-position relative to the ether oxygen atom by reaction of a reactive benzene compound substituted in the 1-position and the 2- or 4-position with a salt of nitrous acid, the improvement in that the reaction is carried out in the presence of a quaternary onium salt in water.

REFERENCES:
patent: 3824295 (1974-07-01), Gordon
patent: 3840605 (1974-10-01), Gordon
patent: 3992432 (1976-11-01), Napier et al.
McKillop et al., Tetrahedron, vol. 30, (1974), 1379-1382.
Herriott et al., Tetrahedron Letters, No. 44, (1972), 4521-4524.

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