1: With n-butyllithium; diisopropylamine in diethyl ether T=-78°C; 0.416667 h; 2: With bromine in diethyl ether T=-78 - 20°C; 3: With water in diethyl ether regioselective reaction;

boron trifluoride diethyl etherate in diethyl ether T=0°C; 0.166667 h; Inert atmosphere;

1: With n-butyllithium; diisopropylamine in diethyl ether T=-78°C; 0.416667 h; 2: With iodine in diethyl ether T=-78 - 20°C; 3: With water in diethyl ether regioselective reaction;

1: lithium diisopropyl amide / diethyl ether / 0.33 h / -78 °C 2: selenium / diethyl ether / -78 °C 3: water / diethyl ether / 0.5 h View Scheme