1.1
Catalysts:
Perchloric acid
Solvents:
Dichloromethane
;
15 - 20 min, rt; rt → 39 °C; 12 h, 39 °C; 39 °C → rt
1.2
Solvents:
Water
;
5 min, rt
1.3
Reagents:
Ammonium hydroxide
Solvents:
Water
;
30 min, pH 9.5 - 10, rt
1.4
Solvents:
Dichloromethane
;
15 min, rt

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