1.1: hydrogenchloride / acetone / 22 h / 25 °C 2.1: pyridine / 4 h / -10 - -5 °C 3.1: lithium bromide / butanone / 22 h / 80 °C 4.1: hydrogenchloride; zinc/copper couple / water; methanol / 18 h / 25 °C 5.1: sodium carbonate / methanol / 0.5 h / 25 °C 6.1: toluene / 5 h / |Reflux 7.1: zinc; acetic acid / diethyl ether / 72.48 h / 0 - 25 °C 8.1: sodium hydride / N,N-dimethyl-formamide / 0.5 h / 0 °C / |Inert atmosphere 8.2: 4 h / 0 - 20 °C / |Inert atmosphere 9.1: palladium 10 on activated carbon; hydrogen / methanol / 168 h / 40 °C / 7500.75 Torr View Scheme

nano n-propylsulfonated magnetic γ-Fe2O3 1.5 h; Reflux;

[Rh(H)(PEt3)3]; 4-phenylbut-3-en-2-one in N,N-dimethyl-formamide T=40°C; 1.5 h;

1: D-ribopyranose With ammonium chloride; ammonia in methanol T=0°C; 0.5 h; 2: acetic anhydride in pyridine T=20°C; 12 h; Title compound not separated from byproducts;

1: hydrogenchloride / 22 h / 25 °C 2: 1H-imidazole; triphenylphosphine; iodine / toluene / 2 h / 70 °C 3: zinc; water; hydrogenchloride / ethanol / 19 h / 10 - 24 °C 4: sodium carbonate; magnesium sulfate / ethanol; water / 23 h / 25 °C 5: toluene / 5 h / |Reflux 6: hydrogen; palladium 10 on activated carbon / methanol / 18 h / 30 °C / 2250.23 Torr View Scheme

1: pyridine 2: hydrogen bromide; acetic acid / dichloromethane View Scheme

perchloric acid; 1,3-dichloro-s-triazine-2,4,6(1H,3H,5H)-trione; ruthenium trichloride in water; acetic acid T=40°C; Kinetics;

1: hydrogenchloride / 22 h / 25 °C 2: pyridine / 4 h / -10 - -5 °C View Scheme

1: 16.5 percent / acetone / 0.25 h / Heating 2: 68 percent / pyridine / 1.) 0 deg C, 12 h; 2.) water, rt, 1h View Scheme

1.1: 88 percent / H2SO4 / 3 h / 20 °C 2.1: 100 percent / triethylamine; DMAP / CH2Cl2 / 3 h / 20 °C 3.1: potassium tert-butoxide / tetrahydrofuran / 0 - 20 °C 3.2: 86 percent / tetrahydrofuran / 7 h / 0 - 20 °C 4.1: 99 percent / oxalyl chloride; DMSO; triethylamine / CH2Cl2 / -78 - 20 °C 5.1: 96 percent / tetrahydrofuran / 1 h / -78 °C 6.1: 95 percent / Neolyst dichlorideTM / CH2Cl2 / 48 h / 20 °C 7.1: 90 percent / pyridinium dichromate; 4 Angstroem molecular sieves / dimethylformamide / 48 h / 20 °C 8.1: 99 percent / sodium borohydride; cerium(III) chloride heptahydrate / methanol / 0.5 h / 0 - 5 °C 9.1: triphenylphosphine; DIAD / tetrahydrofuran / 0.67 h / 0 - 20 °C 9.2: 74 percent / tetrahydrofuran / 20 °C 10.1: 99 percent / TFA; MeOH / 1,2-dichloro-ethane / 20 °C View Scheme