In the last two decades, many axially chiral 1, 1′-binaphthyl derivatives have been successfully used as highly efficient chiral auxiliaries for chiral molecular recognition as well as asymmetric syntheses. In some cases, enhanced chiral recognition abilities have been brought by 4, 4′-or 9, 9′-biphenanthryl analogues by virtue of the more expanded aromatic plane. 1 To our knowledge, however, 1, 1′-biphenanthryl compounds have ...
