Bromine → HCID 21102206, compound

Reaction equation

[NH:1]1[CH2:6][CH2:5][CH:4]([N:7]2[CH2:16][C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[NH:9][C:8]2=[O:17])[CH2:3][CH2:2]1.[Br:18]Br>C(O)(=O)C.C(Cl)Cl>[Br:18][C:13]1[CH:14]=[C:15]2[C:10](=[CH:11][CH:12]=1)[NH:9][C:8](=[O:17])[N:7]([CH:4]1[CH2:3][CH2:2][NH:1][CH2:6][CH2:5]1)[CH2:16]2

Participants

Procedure

3-Piperidin-4-yl-3,4-dihydro-1H-quinazolin-2-one (0.2 g, 0.87 mmol) was dissolved in acetic acid (2 mL). To this solution was added a solution of bromine (1.8 mL, 35.14 mmol) in acetic acid (0.5 mL) dropwise over 5 min. After stirring for at room temperature for 1 h, the reaction mixture was diluted with methylene chloride, washed with water (2×), brine (2×), dried over sodium sulfate, filtered, and concentrated to afford 0.16 g (59%) which was used immediately without further purification. LC/MS: tR=0.91 min, 310.15 (MH)+.