One–pot Hydrodehalogenation‐Hydrogenation of Alkenyl Bromides with Nickel Boride: an Easy Access to Di‐ and Trisubstituted Ethanes from Aldehydes

Abstract A simple and efficient procedure for the one‐pot hydrodebromination‐hydrogenation of substituted 1‐bromo‐1‐alkenes to give the related ethanes by the pair NiCl 2 ⋅ 6H 2 O and NaBH 4 (nickel boride) in THF‐methanol at room temperature is reported. This unexplored functional group conversion allows completing advantageously the process leading aldehydes into different types 1,2‐disubstituted ethanes.