Oxidation of allylacetone to 2,5-hexanedione in a...

C - Chemistry – Metallurgy – 07 – C

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260/585.2

C07C 45/00 (2006.01) C07C 45/30 (2006.01)

Patent

CA 1048542

ABSTRACT OF THE DISCLOSURE An economical process is described for the oxidation of allylacetone to 2,5-hexanedione using palladium chloride catalyst in the presence of copper chloride and oxygen, the reaction being carried out in a heterogeneous solvent system which is a mixture of water and a high-boiling hydrocarbon solvent, specific such solvents being either trichlorobenzene, hexachlorobutadiene, triethylbenzene, diphenyl ether or .alpha.-chloronaphthalene. High yields of product are obtained in minimum reaction times and with minimal losses of the expensive palladium catalyst.

223963

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