Azobisisobutyronitrile → HCID 15457079, compound

Participants

Reaction Steps

0.98 g (2.72 mmol) of 3-(7-chloro-5-fluoro-2-methylbenzofuran-4-yl)-1-methyl-6-trifluoromethyl-2-(1H)-pyridone was dissolved in 25 ml of carbon tetrachloride, and 0.51 g (2.86 mmol) of NBS and 0.04 g (0.27 mmol) of 2,2′-azobisisobutyronitrile were added thereto, followed by refluxing for 2 hours. Succinic acid imide was removed by filtration. Then, carbon tetrachloride was distilled off under reduced pressure, and the obtained residue was poured into water and extracted with ethyl acetate. After washing with water, the organic layer was dried over anhydrous magnesium sulfate. Ethyl acetate was distilled off under reduced pressure, and the obtained crude crystals were washed with n-hexane to obtain 0.94 g (yield: 79%) of the desired product. Melting point: 142-144° C. 1H-NMR (300 MHz, CDCl3) δ value: 3.73(3H,s), 4.56(2H,s), 6.66(1H,s), 6.80(1H,d), 7.20(1H,d), 7.55(1H,d)ppm.

Provenance & Evidence