N-bromobutanimide → 1-Bromo-2-(1-methylethyl)-4-(phenylmethoxy)benzene
反応式
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH:15]([CH3:17])[CH3:16])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Br:18]N1C(=O)CCC1=O>C(Cl)(Cl)(Cl)Cl>[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([Br:18])=[C:11]([CH:15]([CH3:17])[CH3:16])[CH:10]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1参加物
4
実験手順
To a solution of 33 (452 mg, 2.00 mmol) in CCl4 (20 mL) were added N-bromosuccinimide (373 mg, 2.10 mmol) and silica gel (1 g) and the mixture was stirred in the dark at room temperature for 36 hours. Then, the mixture was filtered and the filtrates were washed with satured solution of sodium thiosulphate (10 mL). The organic phase were dried over Na2SO4, filtered and concentrated on vacuo to give 564 mg of bromoaryl 34. Yield 93%. 1H NMR (300 MHz, CDCl3) δ ppm: 7.32-7.51 (m, 6H), 6.92 (d, J=3.0 Hz, 1H), 6.68 (dd, J1=8.7 Hz, J2=3.0 Hz, 1H), 5.04 (s, 2H), 3.31 (sep, J=6.9 Hz, 1H), 1.22 (d, J=6.9 Hz, 6H); 13C NMR (75 MHz, CDCl3) δ ppm: 158.4, 148.5, 136.7, 133.2, 128.6, 128.1, 127.5, 115.0, 114.0, 113.3, 70.2, 33.0, 22.7; HRMS (EI) m/z: calcd for C16H17BrO: 304.0463. found: 304.0465.