Pentafluoropropionic acid → HCID 178509650, 화합물

HRID 976595노트

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HRID 976595 반응식
[NH2:1][C:2]1[CH:3]=[C:4]([C:9]2[CH:16]=[CH:15][CH:14]=[CH:13][C:10]=2[C:11]#[N:12])[CH:5]=[CH:6][C:7]=1[NH2:8].[F:17][C:18]([F:26])([F:25])[C:19]([F:24])([F:23])[C:20](O)=O>>[C:11]([C:10]1[CH:13]=[CH:14][CH:15]=[CH:16][C:9]=1[C:4]1[CH:5]=[CH:6][C:7]2[NH:8][C:20]([C:19]([F:24])([F:23])[C:18]([F:26])([F:25])[F:17])=[N:1][C:2]=2[CH:3]=1)#[N:12]

참가 물질

3

반응물 2

HCID 62356Pentafluoropropionic acidHCID 21468845HCID 21468845, 화합물

생성물 1

HCID 178509650HCID 178509650, 화합물

반응 조건

온도
115 °C

실험 절차

2-(3,4-Diaminophenyl)benzonitrile (9.6 mmoles, 2.0 g) was dissolved in 40 ml of pentafluoropropionic acid and heated at 115° C. for 20 hours. After cooling, the solvent was removed in vacuo. The residue was dissolved in ethyl acetate. The ethyl acetate solution was added slowly to saturated sodium bicarbonate. The intermediate was extracted with ethyl acetate, washed with brine, dried over sodium sulfate and concentrated. The residue was chromatographed over silica gel eluted with 25% ethyl acetate in hexane to yield 1.1 g of 5-(2-cyanophenyl)-2-pentafluoroethyl-1H-benzimidazole. (MS).

후처리

  1. temperatureAfter cooling
  2. customthe solvent was removed in vacuo
  3. dissolutionThe residue was dissolved in ethyl acetate
  4. additionThe ethyl acetate solution was added slowly to saturated sodium bicarbonate
  5. extractionThe intermediate was extracted with ethyl acetate
  6. washwashed with brine
  7. dry with materialdried over sodium sulfate
  8. concentrationconcentrated
  9. customThe residue was chromatographed over silica gel
  10. washeluted with 25% ethyl acetate in hexane

출처 및 근거

ORD 기록
ord-d0e870a695b346dbb0dd0095a234f044
출처 데이터셋
uspto-grants-1997_03
특허 번호
US05612360

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