Nickel-catalysed conjugate addition of trimethylaluminium to 3-Oxo-Δ4-steroids

Abstract
Nickel-catalysed addition of trimethylaluminium to 3-oxo-Δ4-steroids (cholest-4-en-3-one, testosterone propionate and progesterone) in ether gives the corresponding 5β-methyl saturated ketones in moderate yields. Lithium dimethylcuprate gives similar results.

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