Process for producing diphenyls

Details Process for producing diphenyls Process for producing diphenyls

1973-01-24

1976-06-15

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260649DP, 260670, C07C 4320, C07C 2500, C07C 1514

Patent

active

039637875

ABSTRACT:
The oxidative coupling of benzene or benzene derivatives to form the corresponding diphenyls, comprising contacting benzene or a benzene derivative, such as toluene, with molecular oxygen using as a catalyst organic carboxylates of palladium such as palladium acetate. Use of at least one zirconium compound such as zirconium oxystearate in conjunction with the catalyst gives rise to an increased catalytic activity. The diphenyls are intermediates for production of dyestuffs, pharmaceuticals and other chemicals, and also find application in the preparation of high-molecular-weight polyesters and polyamides.

REFERENCES:
patent: 3145237 (1964-08-01), Helden et al.
patent: 3401207 (1968-09-01), Selwitz
patent: 3547982 (1970-12-01), McKeon et al.
Davidson et al., Chem. and Ind., p. 457, (1966), p. 1361, (1967).
Blumenthal, "The Chemical Behavior of Zirconium", pp. 119-123, 135-144 and 311-338, (1958).

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