Dimethylformamide → p-Acetoxybenzoyl chloride

참여 물질

반응 단계

A slurry of 4-acetoxybenzoic acid (100 g, 555.1 mmol) in CH2Cl2 (50 mL) was treated with a catalytic amount of DMF (0.5 mL) and cooled in ice bath. The reaction was stirred as neat oxalyl chloride (51 mL, 582.82 mmol, 1.05 equiv.) was added dropwise. The reaction was allowed to warm to ambient temperature and stirred overnight. The reaction mixture was concentrated under reduced pressure to give 4-(chlorocarbonyl)phenyl acetate (110 g, 100% th.; 110% pract.), which was used in the next step without further purification; 1H NMR (CDCl3) δ 8.09 (d, 2H), 7.20 (d, 2H), 2.28 (s, 3H) ppm.

출처 및 근거