1: 48 percent / aq. HCl / methanol / 3 h / Heating 2: 74 percent / ethanol / 1 h / 5 - 20 °C View Scheme

1: 74 percent / triethylamine / diethyl ether / 1 h / Ambient temperature 2: 54 percent / dimethylformamide / 32 h / 100 °C 3: 59 percent / phosphorous oxychloride / benzene / 2 h / Heating View Scheme

triethylamine in diethyl ether 1 h; Ambient temperature;

1: 48 percent / aq. HCl / methanol / 3 h / Heating 2: 74 percent / ethanol / 1 h / 5 - 20 °C 3: 75 percent / 55 - 70 °C 4: 98 percent / MeONa / methanol / 12 h / 60 °C 5: 93 percent / K2CO3 / acetone / 12 h / 41 °C 6: 82 percent / LiAlH4 / CH2Cl2; diethyl ether / 0.5 h / Ambient temperature 7: 68 percent / diazabicyclooctane / dioxane / 7 h / 60 °C View Scheme

1: 48 percent / aq. HCl / methanol / 3 h / Heating 2: 74 percent / ethanol / 1 h / 5 - 20 °C 3: 75 percent / 55 - 70 °C 4: 98 percent / MeONa / methanol / 12 h / 60 °C 5: 93 percent / K2CO3 / acetone / 12 h / 41 °C 6: 82 percent / LiAlH4 / CH2Cl2; diethyl ether / 0.5 h / Ambient temperature 7: 71 percent / diazabicyclooctane / dioxane / 48 h / 60 °C View Scheme