Process for dehydrogenation of sterols to produce .DELTA..sup.4

Details Process for dehydrogenation of sterols to produce .DELTA..sup.4 Process for dehydrogenation of sterols to produce .DELTA..sup.4

1979-10-04

1980-10-07

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07J 900

Patent

active

042267862

ABSTRACT:
This invention relates to the dehydrogenation of a 3-.beta.-hydroxy steroid or a mixture of soy sterols to form the corresponding mixture of .DELTA..sup.4 -3-keto derivatives of phytosterols, the improvement which comprises dehydrogenation of the steroid or mixture of sterols using a supported nickel catalyst and carrying out the dehydrogenation in the presence of at least two chemically different hydrogen acceptors. One such process uses a supported nickel catalyst and a dialkyl ketone, such as methyl ethyl ketone, and an olefin, such as 1-hexene, as the two different hydrogen acceptors.

REFERENCES:
patent: 4072697 (1978-02-01), Sekine et al.
patent: 4148810 (1979-04-01), Struve

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