1: (R)-BINOL; 4 Angstroem molecular sieves; Ti(OPr-i)4 / CH2Cl2 / 96 h / -20 °C 2: 99 percent / 2,6-lutidine / CH2Cl2 / 0 - 20 °C 3: 78 percent / second generation Grubbs' catalyst / CH2Cl2 / 12 h / 40 °C 4: 95 percent / H2 / RhCl(PPh3)3 / benzene / 4 h / 20 °C 5: 90 percent / Et3SiH; BiBr3 / acetonitrile / 1 h / 20 °C 6: 41.0 mg / TBAF / acetonitrile; tetrahydrofuran / 0.17 h View Scheme

tricarbonyl(η6-arene)chromium(0) complex derived from (1R,2S)-N,N-dibutylnorephedrine; diisobutylaluminium hydride 1.) toluene, hexanes, 0 deg C, 12 h, 2.) toluene, 23 deg C, 2 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;