1.1
Reagents:
Triethylamine
2.1
Reagents:
1,3-Diiodo-5,5-dimethyl-2,4-imidazolidinedione
Catalysts:
Benzyltriethylammonium chloride
Solvents:
Water
;
12 h, rt
2.2
Reagents:
Silica