potassium hydroxide; hydrazine hydrate; diethylene glycol 1.) reflux, 5 h; 2.) 230 deg C - 240 deg C, 20 h;

1: 45 percent / benzyltrimethylammonium hydroxide / methanol; 2-methyl-propan-2-ol / 10 - 20 °C 2: 86 percent / sodium hydroxide, water / 10 h / Heating 3: 59 percent / acetic anhydride / 14 h / Heating 4: 42 percent / potassium hydroxide, water / 6 h / 70 °C / Heating 5: 68 percent / 1.) hydrazine hydrate;2.) potassium hydroxide, diethylene glycol / 1.) reflux, 5 h; 2.) 230 deg C - 240 deg C, 20 h View Scheme

1: 86 percent / sodium hydroxide, water / 10 h / Heating 2: 59 percent / acetic anhydride / 14 h / Heating 3: 42 percent / potassium hydroxide, water / 6 h / 70 °C / Heating 4: 68 percent / 1.) hydrazine hydrate;2.) potassium hydroxide, diethylene glycol / 1.) reflux, 5 h; 2.) 230 deg C - 240 deg C, 20 h View Scheme

1: 42 percent / potassium hydroxide, water / 6 h / 70 °C / Heating 2: 68 percent / 1.) hydrazine hydrate;2.) potassium hydroxide, diethylene glycol / 1.) reflux, 5 h; 2.) 230 deg C - 240 deg C, 20 h View Scheme

1: 59 percent / acetic anhydride / 14 h / Heating 2: 42 percent / potassium hydroxide, water / 6 h / 70 °C / Heating 3: 68 percent / 1.) hydrazine hydrate;2.) potassium hydroxide, diethylene glycol / 1.) reflux, 5 h; 2.) 230 deg C - 240 deg C, 20 h View Scheme

1: 60 percent / AlCl3 / CH2Cl2 / 0.25 h / -15 °C 2: pyridine / 24 h / Ambient temperature View Scheme

1: 60 percent / AlCl3 / CH2Cl2 / 0.25 h / -15 °C 2: pyridine / 24 h / Ambient temperature View Scheme

1: 60 percent / AlCl3 / CH2Cl2 / 0.25 h / -15 °C 2: pyridine / 24 h / Ambient temperature View Scheme

thionyl chloride 0.333333 h; Heating;

aluminium trichloride in dichloromethane T=-15°C; 0.25 h;