Thionyl Chloride → HCID 53967044、化合物
反応式
[F:1][C:2]1[CH:7]=[C:6]([CH2:8][C:9](O)=[O:10])[CH:5]=[CH:4][C:3]=1[C:12]1[CH:17]=[CH:16][C:15]([F:18])=[CH:14][C:13]=1[F:19].S(Cl)([Cl:22])=O>>[F:1][C:2]1[CH:7]=[C:6]([CH2:8][C:9]([Cl:22])=[O:10])[CH:5]=[CH:4][C:3]=1[C:12]1[CH:17]=[CH:16][C:15]([F:18])=[CH:14][C:13]=1[F:19]参加物
3
実験手順
A mixture of 2,2',4'-trifluoro-4-biphenylylacetic acid (3.6 g.) and thionyl chloride (15 ml.) was refluxed for 1 hour; excess thionyl chloride was removed and the residual acid chloride distilled at 141°-143° C./1.0 mm as a yellow oil, solidifying on cooling, (3.11 g.). Recrystallisation from 62-68 petroleum ether gave colourless needles of 2,2',4'-trifluoro-4-biphenylylacetyl chloride, m.p. 70°-73° C. 1 g. of this was dissolved in ether (10 ml.) and the solution added slowly to a stirred mixture of ammonia (SG=0.880; 5 ml.) and ether (25 ml.) at room temperature. After stirring for 15 minutes, the product was isolated in ether, washed, dried and evaporated. Recrystallization of the residue from methylene chloride/40-60 petroleum ether followed by a further crystallization from 100-120 petroleum ether gave colourless plates of 2,2',4'-trifluoro-4-biphenylylacetamide, m.p. 137°-140° C.
後処理
- temperaturewas refluxed for 1 hour