Acetic Acid → 4-{2-Carboxy-2-[2-(4-fluoro-phenyl)-ethylsulfanyl]-ethyl}-benzoic acid 2-phenyl-5 trifluoromethyl-oxazol-4-ylmethyl ester

HRID 709499ノート

反応式

HRID 709499 の反応式
[C:1]1([C:7]2[O:8][C:9]([C:42]([F:45])([F:44])[F:43])=[C:10]([CH2:12][O:13][C:14](=[O:41])[C:15]3[CH:20]=[CH:19][C:18]([CH2:21][CH:22]([S:31][CH2:32][CH2:33][C:34]4[CH:39]=[CH:38][C:37]([F:40])=[CH:36][CH:35]=4)[C:23]([O:25]CC(Cl)(Cl)Cl)=[O:24])=[CH:17][CH:16]=3)[N:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(O)(=O)C>C(Cl)Cl.[Zn]>[C:1]1([C:7]2[O:8][C:9]([C:42]([F:43])([F:45])[F:44])=[C:10]([CH2:12][O:13][C:14](=[O:41])[C:15]3[CH:16]=[CH:17][C:18]([CH2:21][CH:22]([C:23]([OH:25])=[O:24])[S:31][CH2:32][CH2:33][C:34]4[CH:35]=[CH:36][C:37]([F:40])=[CH:38][CH:39]=4)=[CH:19][CH:20]=3)[N:11]=2)[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1

参加物

5

反応物 2

HCID 176Acetic AcidHCID 866503034-[2-[2-(4-Fluoro-phenyl)-ethylsulfanyl]-2-(2,2,2-trichloro-ethoxycarbonyl)-ethyl]-benzoic acid 2-phenyl-5-trifluoromethyl-oxazol-4-ylmethylester

生成物 1

HCID 668653674-{2-Carboxy-2-[2-(4-fluoro-phenyl)-ethylsulfanyl]-ethyl}-benzoic acid 2-phenyl-5 trifluoromethyl-oxazol-4-ylmethyl ester収率 10.2%

試薬・触媒・溶媒 2

HCID 23994Zinc触媒HCID 6344Dichloromethane溶媒

実験手順

4-[2-[2-(4-Fluoro-phenyl)-ethylsulfanyl]-2-(2,2,2-trichloro-ethoxycarbonyl)-ethyl]-benzoic acid 2-phenyl-5-trifluoromethyl-oxazol-4-ylmethylester (289 mg, 0.41 mmol) was dissolved in DCM (30 mL) and zinc (530 mg, 8.1 mmol) was added followed by acetic acid (2.5 mL, 41.6 mmol). The resulting suspension was stirred for 6 h at ambient temperature. After filtering off and washing the zinc with MeOH and EtOAc, the combined organic layers were extracted with water, dried (MgSO4) and evaporated under reduced pressure. The remaining crude product was purified by flash chromatography using Et2O/DCM/EtOAc 6:3:1 as the eluent to afford the title compound as a solid (yield: 24 mg, 10%). 1H NMR (400 MHz, CDCl3): δ 8.07 (d, 2H), 7.98 (d, 2H), 7.43-7.55 (m, 3H), 7.24 (d, 2H), 7.07 (m, 2H), 6.92 (t, 2H), 5.39 (s, 2H), 3.43 (t, 1H), 3.22 (dd, 1H), 2.75-2.99 (m, 5H). Mass spectrum: M+H+ 574.14, M−H+ 572.24.

後処理

  1. filtrationAfter filtering off
  2. washwashing the zinc with MeOH and EtOAc
  3. extractionthe combined organic layers were extracted with water
  4. dry with materialdried (MgSO4)
  5. customevaporated under reduced pressure
  6. customThe remaining crude product was purified by flash chromatography

出典と根拠

ORDレコード
ord-717cda36d5564b389d31e36bf6ade2d1
出典データセット
uspto-grants-2015_11
特許番号
US09181181B2

反応ノート

読み込み中…