Benzoyl Peroxide → 2-[3-(5-bromooxazol-2-yl)benzyl]-6-(3,5-difluorophenyl)-2H-pyridazin-3-one

Participants

Reaction Steps

A solution of 184 mg (0.504 mmol) of 6-(3,5-difluorophenyl)-2-(3-oxazol-2-ylbenzyl)-2H-pyridazin-3-one, 108 mg (0.605 mmol) of N-bromosuccinimide and 6.3 mg (0.026 mmol) of benzoyl peroxide in 1 ml of chlorobenzene is stirred at 80° C. for 42 hours. The reaction mixture is evaporated and chromatographed on a silica-gel column with dichloromethane/methanol as eluent, giving 2-[3-(5-bromooxazol-2-yl)benzyl]-6-(3,5-difluorophenyl)-2H-pyridazin-3-one as yellowish crystals; ESI 444, 446.

Provenance & Evidence