Process for producing diphenyls

Details Process for producing diphenyls Process for producing diphenyls

1977-10-14

1979-08-14

Chan, Nicky

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire cyclic molecules or entire...

260649DP, 568642, C07C 1514, C07C 2518, C07C 4320

Patent

active

041645189

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 .beta.-diketo complexes of palladium such as acetylacetone-palladium complex. Use of at least one zirconium compound such as zirconium oxystearate in conjunction with the catalyst gives 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., Chemistry and Industry, p. 457 (1966) and p. 1361 (1967).

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