1,8-diazabicyclo[5.4.0]undec-7-ene in dimethyl sulfoxide T=100°C; 1 h;

1,8-diazabicyclo[5.4.0]undec-7-ene in dimethyl sulfoxide T=100°C; 1 h;

potassium carbonate in butanone 1.5 h; Heating / reflux;

1: potassium carbonate / acetone / 6 h / 20 °C / |Reflux 2: copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); triethylamine / acetonitrile / |Inert atmosphere; |Reflux 3: sodium hydrogencarbonate; magnesium sulfate; sodium periodate; ruthenium trichloride / acetonitrile; tetrachloromethane; water / 2 h / 20 °C 4: 1,8-diazabicyclo[5.4.0]undec-7-ene / dimethyl sulfoxide / 1 h / 100 °C View Scheme

1: sodium hydrogencarbonate; magnesium sulfate; sodium periodate; ruthenium trichloride / acetonitrile; tetrachloromethane; water / 20 °C 2: 1,8-diazabicyclo[5.4.0]undec-7-ene / dimethyl sulfoxide / 1 h / 100 °C View Scheme

1: sodium hydrogencarbonate; magnesium sulfate; sodium periodate; ruthenium trichloride / acetonitrile; tetrachloromethane; water / 2 h / 20 °C 2: 1,8-diazabicyclo[5.4.0]undec-7-ene / dimethyl sulfoxide / 1 h / 100 °C View Scheme

1: copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); triethylamine / acetonitrile / |Inert atmosphere; |Reflux 2: sodium hydrogencarbonate; magnesium sulfate; sodium periodate; ruthenium trichloride / acetonitrile; tetrachloromethane; water / 2 h / 20 °C 3: 1,8-diazabicyclo[5.4.0]undec-7-ene / dimethyl sulfoxide / 1 h / 100 °C View Scheme

potassium hydroxide; ethanol 1.5 h; Heating / reflux;