triethylamine in water T=20 - 25°C; 18 h;

1,8-diazabicyclo[5.4.0]undec-7-ene in acetonitrile 0.5 h; Ambient temperature;

1: CHCl3 / 17 h / Ambient temperature 2: EtONa/EtOH / 1 h / Heating 3: 100 percent / NaBH4 / ethanol / 0.5 h / 0 °C 4: LiAlH4 / tetrahydrofuran / 0.5 h / -5 °C 5: dioxane; H2O / 0.5 h 6: 85 percent / Et3N, pyridine-SO3, DMSO / 3 h / Ambient temperature 7: 88 percent / hydroxylamine hydrochloride, aq. NaHCO3 / ethanol; tetrahydrofuran / 1 h / 40 °C 8: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 9: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme

1: dioxane; H2O / 0.5 h 2: 85 percent / Et3N, pyridine-SO3, DMSO / 3 h / Ambient temperature 3: 88 percent / hydroxylamine hydrochloride, aq. NaHCO3 / ethanol; tetrahydrofuran / 1 h / 40 °C 4: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 5: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme

1: LiAlH4 / tetrahydrofuran / 0.5 h / -5 °C 2: dioxane; H2O / 0.5 h 3: 85 percent / Et3N, pyridine-SO3, DMSO / 3 h / Ambient temperature 4: 88 percent / hydroxylamine hydrochloride, aq. NaHCO3 / ethanol; tetrahydrofuran / 1 h / 40 °C 5: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 6: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme

1: 100 percent / NaBH4 / ethanol / 0.5 h / 0 °C 2: LiAlH4 / tetrahydrofuran / 0.5 h / -5 °C 3: dioxane; H2O / 0.5 h 4: 85 percent / Et3N, pyridine-SO3, DMSO / 3 h / Ambient temperature 5: 88 percent / hydroxylamine hydrochloride, aq. NaHCO3 / ethanol; tetrahydrofuran / 1 h / 40 °C 6: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 7: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme

1: EtONa/EtOH / 1 h / Heating 2: 100 percent / NaBH4 / ethanol / 0.5 h / 0 °C 3: LiAlH4 / tetrahydrofuran / 0.5 h / -5 °C 4: dioxane; H2O / 0.5 h 5: 85 percent / Et3N, pyridine-SO3, DMSO / 3 h / Ambient temperature 6: 88 percent / hydroxylamine hydrochloride, aq. NaHCO3 / ethanol; tetrahydrofuran / 1 h / 40 °C 7: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 8: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme

1: 85 percent / Et3N, pyridine-SO3, DMSO / 3 h / Ambient temperature 2: 88 percent / hydroxylamine hydrochloride, aq. NaHCO3 / ethanol; tetrahydrofuran / 1 h / 40 °C 3: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 4: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme

1: 88 percent / hydroxylamine hydrochloride, aq. NaHCO3 / ethanol; tetrahydrofuran / 1 h / 40 °C 2: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 3: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme

1: 94 percent / AcCl, MeOH / 0.83 h / Ambient temperature 2: 85 percent / DBU / acetonitrile / 0.5 h / Ambient temperature View Scheme