| 摘要 |
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 4-3-keto derivatives of phytosterols, the improvement which comprises dehydrogenating the steroid or mixture of sterols using an activated non-pyrophoric nickel catalyst and carrying out the oxidation in the presence of a diaryl ketone. One such process uses a non-pyrophoric Raney nickel type catalyst and a diaryl ketone, such as benzophenone as a hydrogen acceptor.
|
