Enantio‐ and Diastereoselective Copper‐Catalyzed Allylboration of Alkynes with Allylic gem‐Dichlorides

Allylic gem‐dichlorides are shown to be efficient substrates for catalytic asymmetric allylboration of alkynes. The method employs a chiral NHC−Cu catalyst capable of generating in a single step chiral skipped dienes bearing a Z‐alkenyl chloride, a trisubstituted E‐alkenyl boronate and a bis‐allylic...

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