0.05 h; microwave irradiation;

jones' reagent in acetone T=0°C;

in water

2,6-di-tert-butyl-pyridine; 2-hydroxy-1,3-dimethylbenzene; C32H12BF24(1-)*C44H30N2O2P(1+) in toluene T=-20°C; 1 h; Inert atmosphere; optical yield given as percent eeenantioselective reaction;

1: 63 percent / PPh3, diethyl azodicarboxylate / tetrahydrofuran / 1.) -10 deg C, 3 h, 2.) 22 deg C, 15 h 2: 99 percent / trifluoroacetic acid / methanol / 1.) 22 deg C, 24 h, 2.) reflux, 3 h 3: 70 percent / lead tetraacetate / benzene / 0.5 h / 22 °C 4: 67 percent / Jones' reagent / acetone / 0 °C View Scheme

2,6-di-tert-butyl-pyridine; 2-hydroxy-1,3-dimethylbenzene; C32H12BF24(1-)*C52H34N2O2P(1+) in toluene T=0°C; 0.3 h; Inert atmosphere; optical yield given as percent eeenantioselective reaction;

sodium hydrogencarbonate 4 h; Ambient temperature;

hydrazine hydrate in ethanol; acetone Heating;

1: SOCl2; DMF / 20 °C 2: diethyl ether; toluene / 0 °C 3: 80 percent / PhCO2Ag; Et3N / 2 h / Heating 4: LiBH4 / tetrahydrofuran; H2O / 1 h 5: AcOH / 80 °C View Scheme