1.1
 
 
 
 Reagents:
 
 
 
 Lithium diisopropylamide
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Tetrahydrofuran
 
 
 
 
 
 
 
 
 
 ; 
 -78 °C; 40 min, -78 °C 
 1.2
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Tetrahydrofuran
 
 
 
 
 
 
 
 
 
 ; 
 -78 °C; 2 h, -78 °C 
 1.3
 
 
 
 Reagents:
 
 
 
 Ammonium chloride
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Water 
 1.4
 
 
 
 Reagents:
 
 
 
 Lithium triethylborohydride
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Tetrahydrofuran
 
 
 
 
 
 
 
 
 
 ; 
 -78 °C; 30 min 
 1.5
 
 
 
 Reagents:
 
 
 
 Sodium bicarbonate
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Water 
 1.6
 
 
 
 Reagents:
 
 
 
 Hydrogen peroxide
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Water
 
 
 
 
 
 
 
 
 
 ; 
 20 min, 0 °C 
 1.7
 
 
 
 Reagents:
 
 
 
 Boron trifluoride etherate
 
 
 
 
 , 
 
 
 
 Triethylsilane
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Dichloromethane
 
 
 
 
 
 
 
 
 
 ; 
 -78 °C; 2.5 h, -78 °C 
 1.8
 
 
 
 Reagents:
 
 
 
 Sodium bicarbonate
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Water
 
 
 
 
 
 
 
 
 
 ; 
 5 min 
 1.9
 
 
 
 Reagents:
 
 
 
 Diisopropylethylamine
 
 
 
 
 , 
 
 
 
 Di-tert-butyl dicarbonate
 
 
 
 
 
 
 
 
 
 
 
 
 Solvents:
 
 
 
 Acetonitrile
 
 
 
 
 , 
 
 
 
 1,4-Dioxane
 
 
 
 
 
 
 
 
 
 ; 
 24 h, rt 
 
 3003949364 
 




 
 

 
 
 
 
 
 
 
 
 
 
 