hydrogen; [rhodium(I)(carbonyl)2(acetylacetonate)]; (R,S)-Ph2P-binaphthyl-cyclic binaphthylphosphoramidite in benzene T=60°C; P=15200 Torr; 24 h;

[Rh(acac)2(CO)2]; hydrogen; triphenylphosphine in methanol; toluene T=65°C; P=18751.9 Torr; 0.966667 h; regioselective reaction;

pyridinium chlorochromate in dichloromethane T=0°C; 4 h;

[rhodium(I)(carbonyl)2(acetylacetonate)]; hydrogen; (R,S)-Binaphos in benzene T=40°C; P=76000 Torr; 30 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

1: lithium aluminium tetrahydride / tetrahydrofuran / 5 h / 80 °C / |Cooling with ice; |Inert atmosphere 2: pyridinium chlorochromate / dichloromethane / 4 h / 0 °C View Scheme

1: palladium diacetate; tetra-(n-butyl)ammonium iodide; N,N-dicyclohexylmethylamine; [(t-Bu)3PH]BF4 / toluene; methanol / 0.33 h / 130 °C / 7500.75 Torr 2: dicarbonylacetylacetonato rhodium (I); triphenylphosphine; hydrogen / toluene; methanol / 0.83 h / 70 °C / 18751.9 Torr View Scheme