1.1
Reagents:
Butyllithium
Solvents:
Tetrahydrofuran
,
Hexane
;
-78 °C; 1 h, -78 °C
1.2
Reagents:
Boron trifluoride etherate
;
-78 °C; -78 °C
1.3
Reagents:
Sodium bicarbonate
Solvents:
Water
;
-78 °C