Regio- and Stereo-chemical Effects in the Hydroboration ofΔ² -Steroidal Allylic and HomoallylicAlcohols†

Abstract

A comparison between the hydroboration ofΔ² -steroidal 1α-allylic and5α-homoallylic alcohols reveals that whereas both have astereochemical directing effect, only the allylic alcoholmodifies the regiospecificity of the reaction.

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