tetra-n-butylammonium tetrafluoroborate in acetonitrile Electrolysis;

tetra-n-butylammonium tetrafluoroborate T=-20°C; Electrolysis;

1.1: Bu4N(1+)*BF4(1-) / -20 °C / Electrolysis 2.1: lithium diisopropylamide monotetrahydrofuran complex / tetrahydrofuran / -78 °C 2.2: 95 percent / Br2 / tetrahydrofuran / 4 h / -78 - 20 °C View Scheme