| abstract |
A process for the production of 1-methyl-3-keto-Δ 1 ,4 steroids of general formula I ##STR1## in which St symbolizes the radical of asteroid molecule, where a 3-keto-Δ 1 ,4 steroid of general formula II ##STR2## in which St has the above-mentioned meaning, is reacted in an inert solvent in the presence of a nickel salt soluble therein with an organometallic compound of formula III, IV or V ##STR3## where X, Y 1 , Y 2 , Y 3 , Z 1 and Z 2 are as defined in the specification. |