Water → HCID 9839093, compound

Participants

Reaction Steps

5-Chloro-1-(5-chloro-2-methoxy-phenyl)-1,3-dihydro-benzimidazol-2-one (4 g, 13 mmol) in dichloromethane was cooled to −10° C., and boron tribromide (14.6 ml 1 M solution in dichloromethane 14.6 mmol) was added. The reaction mixture is stirred at room temperature for 6 hours, poured into water (app. 200 ml), and stirred for 15 minutes and filtrated. The title compound was crystallized from toluene/heptane. M.p. 256-257° C.

Provenance & Evidence