potassium dihydrogenphosphate; Fremy’s salt in water; acetone 0.5 h; Ambient temperature;

ammonium cerium(IV) nitrate in acetonitrile

1: 98 percent / H2SO4 2: 69 percent / NaOMe / dioxane / 45 h / 110 °C 3: 94 percent / water / aq. NaOH / dioxane / 17 h / 110 °C 4: 70 percent / PCC / CH2Cl2 / 2 h / Ambient temperature 5: 59 percent / BF3*MeOH / 17 h / Ambient temperature; reaction of its derivatives HCl too with sev. alcohols 6: 86 percent / BBr3 / CH2Cl2 / 16 h / -78 °C 7: 85 percent / Fremy's salt, KH2PO4 / H2O; acetone / 0.5 h / Ambient temperature View Scheme

1: 69 percent / NaOMe / dioxane / 45 h / 110 °C 2: 94 percent / water / aq. NaOH / dioxane / 17 h / 110 °C 3: 70 percent / PCC / CH2Cl2 / 2 h / Ambient temperature 4: 59 percent / BF3*MeOH / 17 h / Ambient temperature; reaction of its derivatives HCl too with sev. alcohols 5: 86 percent / BBr3 / CH2Cl2 / 16 h / -78 °C 6: 85 percent / Fremy's salt, KH2PO4 / H2O; acetone / 0.5 h / Ambient temperature View Scheme

1: 86 percent / BBr3 / CH2Cl2 / 16 h / -78 °C 2: 85 percent / Fremy's salt, KH2PO4 / H2O; acetone / 0.5 h / Ambient temperature View Scheme

palladium diacetate; acetic acid Heating;