| abstract |
The invention relates to a process for the preparation of the general formula II. The title compounds are important intermediates for the synthesis of highly active steroid products, for example the gonatriene derivatives trenbolone acetate, gestrienone and others. Here, * of the general formula I in which R1CH3, C2H5 {* * reduction; Sulfur compound, organic; Sulfur compound, inorganic; Organic solvents; p H range 2} |