potassium permanganate in water T=25 - 45°C; 20 h;

sodium hydroxide; bromine in water Ambient temperature;

potassium permanganate in water 1.) from RT to 43 deg C, 5 h, 2.) 45 deg C, overnight;

potassium permanganate Erhitzen des Reaktionsprodukts im Hochvakuum;

potassium permanganate

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1: thionyl chloride / Heating 2: ammonia gas / 1,2-dichloro-ethane / 0.5 h / -30 °C 3: 67 percent / bromine, aq. potassium hydroxide / 1.) RT, 1 h, 2.) 70 deg C, 15 min 4: 1.) 48-50percent fluoroboric acid, isoamyl nitrite / 1.) ethanol, -10 deg C, 20 min, 2.) a.) hexane, from 0 deg C to RT, b.) reflux, 30 min 5: 66 percent / potassium permanganate / H2O / 3 h / Heating 6: 99 percent / diethyl ether / 1.) 0 deg C, 2.) RT, overnight View Scheme

1: thionyl chloride / Heating 2: ammonia gas / 1,2-dichloro-ethane / 0.5 h / -30 °C 3: 67 percent / bromine, aq. potassium hydroxide / 1.) RT, 1 h, 2.) 70 deg C, 15 min 4: 1.) 48-50percent fluoroboric acid, isoamyl nitrite / 1.) ethanol, -10 deg C, 20 min, 2.) a.) hexane, from 0 deg C to RT, b.) reflux, 30 min View Scheme

1: thionyl chloride / Heating 2: ammonia gas / 1,2-dichloro-ethane / 0.5 h / -30 °C 3: 67 percent / bromine, aq. potassium hydroxide / 1.) RT, 1 h, 2.) 70 deg C, 15 min View Scheme

1: thionyl chloride / Heating 2: ammonia gas / 1,2-dichloro-ethane / 0.5 h / -30 °C 3: 67 percent / bromine, aq. potassium hydroxide / 1.) RT, 1 h, 2.) 70 deg C, 15 min 4: 1.) 48-50percent fluoroboric acid, isoamyl nitrite / 1.) ethanol, -10 deg C, 20 min, 2.) a.) hexane, from 0 deg C to RT, b.) reflux, 30 min 5: 66 percent / potassium permanganate / H2O / 3 h / Heating 6: 99 percent / diethyl ether / 1.) 0 deg C, 2.) RT, overnight 7: 70 percent / LAH / diethyl ether / 0.5 h / -78 °C 8: 1.) oxalyl chloride, dimethyl sulfoxide, 2.) triethylamine / 1.) methylene chloride, -60 deg C, 20 min, 2.) from -60 deg C to RT View Scheme