Carbon Tetrachloride → HCID 57707841, compound

Participants

Reaction Steps

3-(2-Chlorophenyl)-2-methyl-5-(trifluoromethyl)quinoxaline (0.9969 g, 3.089 mmol) and 1,3-dibromo-5,5-dimethylhydantoin (0.5299 g, 1.853 mmol) were suspended in carbon tetrachloride (30.89 mL, 3.089 mmol). To the mixture was added benzoyl peroxide (0.09977 g, 0.3089 mmol) and the mixture was heated at reflux. After 20 h, the mixture was cooled to room temperature and concentrated under reduced pressure. The residue was purified by silica gel column chromatography on a 80 g of Redi-Sep™ column using 0 to 5% gradient of EtOAc in hexane over 10 min, then 5% isocratic of EtOAc for 30 min, then 5 to 20% gradient of EtOAc in hexane over 20 min, then 20% isocratic of EtOAc for 4 min as eluent to give 2-(bromomethyl)-3-(2-chlorophenyl)-5-(trifluoromethyl)-quinoxaline as an off-white syrupy solid: 1H NMR (400 MHz, DMSO-d6) δ ppm 8.48 (1 H, dd, J=8.6, 0.8 Hz), 8.37 (1 H, d, J=6.7 Hz), 8.09 (1 H, t, J=7.8 Hz), 7.55-7.77 (4 H, m), 4.73 (2 H, d, J=61.8 Hz); LC-MS (ESI) m/z 403.0 [M+11]+.

Provenance & Evidence