pyridine T=100°C; Acetylation; 48 h;

1: 66 percent / potassium carbonate / methanol / 0.5 h / 20 °C 2: 61 percent / boron trifluoride diethyl etherate / CH2Cl2 / 0.5 h / -20 °C 3: 74 percent / sodium hydroxide / methanol / 48 h / 20 °C View Scheme

1: CrO3 / acetic acid; H2O / 4 h / 30 °C 2: 75 percent / KOH / methanol / 1 h / Ambient temperature View Scheme

1: 66 percent / potassium carbonate / methanol / 0.5 h / 20 °C 2: 61 percent / boron trifluoride diethyl etherate / CH2Cl2 / 0.5 h / -20 °C View Scheme

potassium carbonate in methanol T=20°C; Deacetylation; 0.5 h;