Reduction of 1,1′-binaphthyls to octahydro-1,1′-binaphthyl derivatives with Raney Ni-Al alloy in aqueous solution

Reduction of BINOL, BINAM and NOBIN with Raney Ni-Al alloy in dilute NaOH aqueous solution results in the formation of H-8-BINOL, H-8-BINAM and H-8-NOBIN in 60-86% isolated yields with 97.5-99% enantiomeric excesses. (C) 2000 Elsevier Science Ltd. All rights reserved.