1.1
Reagents:
Potassium carbonate
Solvents:
Dimethyl sulfoxide
;
20 h, 45 °C
2.1
Reagents:
Sodium hydroxide
Solvents:
Methanol
;
6 h, 50 - 60 °C
2.2
Reagents:
Hydrochloric acid
Solvents:
Water
;
rt