1.1
Reagents:
Trifluoroacetic anhydride
Solvents:
Dichloromethane
;
rt → -5 °C
1.2
Reagents:
Hydrogen peroxide
Solvents:
Water
;
-7 - -5 °C
1.3
Solvents:
Dichloromethane
;
5 h, -7 - -5 °C
1.4
Reagents:
Sodium sulfite
Solvents:
Water
;
10 min, -7 - -5 °C

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