Water → 5,6-Dichloro-1,3-Dihydro-2H-Benzimidazol-2-One

Participants

Reaction Steps

5.49 g (33.9 mmol) of 1,1′-carbonyldiimidazole were added in portions to a stirred solution of 5.00 g (28.2 mmol) of 1,2-diamino-4,5-dichlorobenzene in THF (100 ml) at room temperature. The reaction solution was then stirred at room temperature overnight. The reaction mixture was mixed with water (60 ml) and cooled in an ice bath. The precipitate which separated out was filtered, washed with water and dried in vacuo.

Provenance & Evidence