1.1: trifluorormethanesulfonic acid / 1,2-dichloro-ethane / 0 - 20 °C 2.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 20 °C / Inert atmosphere 2.2: 80 °C View Scheme

trifluorormethanesulfonic acid in 1,2-dichloro-ethane T=0 - 20°C; 0.25 h;

trifluorormethanesulfonic acid T=0 - 20°C; 0.25 h;

1: trifluorormethanesulfonic acid / 1,2-dichloro-ethane / 0 - 20 °C 2: cesium fluoride / acetonitrile / 24 h / 20 °C View Scheme