Abstract
A catalytic enantioselective addition of diarylphosphine oxides to 1-alkenyl(diaryl)phosphine oxides was achieved by using a chiral ureate as a chiral strong Brønsted base catalyst. The reaction followed by the reduction of phosphine oxide moieties provided chiral 1,2-diphosphinoalkanes, which are a family of useful chiral ligands for asymmetric transition metal catalysis.
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