1.1
Reagents:
1,3-Dibromo-5,5-dimethylhydantoin
Catalysts:
Sodium methoxide
Solvents:
Methanol
,
Acetonitrile
;
rt; rt → 40 °C; 4 h, 40 °C; 40 °C → rt
1.2
Reagents:
Sodium sulfite
Solvents:
Water
;
rt