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The first nickel‐catalyzed highly enantioselective reductive Ullmann coupling of ortho‐chlorinated aryl aldehyde was achieved under mild reaction conditions with a chiral 2,2′‐bipyridine ligand (+)‐DTB‐SBpy, thus providing axially chiral biphenyl or binaphthyl dials with up to 99 % yield and 99.5:0.5 er. The versatility of the products as common synthetic intermediates for diverse axially chiral ligands,...
The first nickel‐catalyzed highly enantioselective reductive Ullmann coupling of ortho‐chlorinated aryl aldehyde was achieved under mild reaction conditions with a chiral 2,2′‐bipyridine ligand (+)‐DTB‐SBpy, thus providing axially chiral biphenyl or binaphthyl dials with up to 99 % yield and 99.5:0.5 er. The versatility of the products as common synthetic intermediates for diverse axially chiral ligands,...
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