in ethanol T=65°C; 4 h;

1: 90 percent / pyridine, trifluoroacetic acid, dicyclohexylcarbodiimide / benzene; dimethylsulfoxide / 24 h 2: 45 percent / ethanol / 4 h / 65 °C View Scheme

1: 88 percent / NaCl / dimethylsulfoxide; H2O / 10 h / 170 °C 2: 85 percent / LiAlH4 / diethyl ether / 0.5 h 3: 90 percent / pyridine, trifluoroacetic acid, dicyclohexylcarbodiimide / benzene; dimethylsulfoxide / 24 h 4: 45 percent / ethanol / 4 h / 65 °C View Scheme

1: 70 percent / sodium methoxide / ethanol / 2 h 2: 88 percent / NaCl / dimethylsulfoxide; H2O / 10 h / 170 °C 3: 85 percent / LiAlH4 / diethyl ether / 0.5 h 4: 90 percent / pyridine, trifluoroacetic acid, dicyclohexylcarbodiimide / benzene; dimethylsulfoxide / 24 h 5: 45 percent / ethanol / 4 h / 65 °C View Scheme