[Br:1][C:2]1[C:3]([CH2:10][CH3:11])=[C:4]([CH2:8]O)[CH:5]=[CH:6][CH:7]=1.C(Br)(Br)(Br)[Br:13].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>ClCCl>[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH2:8][Br:13])[C:3]=1[CH2:10][CH3:11]To a solution of (3-bromo-2-ethylphenyl)methanol (D133) (3 g, 13.95 mmol) in Dichloromethane (DCM) (50 mL) was added CBr4 (5.55 g, 16.74 mmol). To the reaction solution was added triphenylphosphine (5.49 g, 20.92 mmol) portionwise at 0° C. The reaction solution was warmed to room temperature and stirred at the temp overnight. The solvent was removed in vacuo and the residue was purified by ISCO column chromatography to afford 1-bromo-3-(bromomethyl)-2-ethylbenzene (D134) (1.3 g) as an oil.
Wird geladen…