Trifluoroacetic acid → 2-methyl-4-[(5S)-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4H-isoxazol-3-yl]benzoic acid

HRID 1770642노트

반응식

HRID 1770642 반응식
[CH3:1][C:2]1[CH:14]=[C:13]([C:15]2[CH2:19][C@:18]([C:24]3[CH:29]=[C:28]([Cl:30])[C:27]([Cl:31])=[C:26]([Cl:32])[CH:25]=3)([C:20]([F:23])([F:22])[F:21])[O:17][N:16]=2)[CH:12]=[CH:11][C:3]=1[C:4]([O:6]C(C)(C)C)=[O:5].FC(F)(F)C(O)=O>ClCCl>[CH3:1][C:2]1[CH:14]=[C:13]([C:15]2[CH2:19][C@:18]([C:24]3[CH:29]=[C:28]([Cl:30])[C:27]([Cl:31])=[C:26]([Cl:32])[CH:25]=3)([C:20]([F:23])([F:22])[F:21])[O:17][N:16]=2)[CH:12]=[CH:11][C:3]=1[C:4]([OH:6])=[O:5]

참가 물질

4

반응물 2

HCID 6422Trifluoroacetic acidHCID 86727016tert-butyl 2-methyl-4-[(5S)-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4H-isoxazol-3-yl]benzoate

생성물 1

HCID 867270182-methyl-4-[(5S)-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4H-isoxazol-3-yl]benzoic acid

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a solution of tert-butyl 2-methyl-4-[(5S)-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4H-isoxazol-3-yl]benzoate (64.87 mmol, 33 g) in dichloromethane (300 mL) was added trifluoroacetic acid (389.2 mmol, 44.6 g) at 0° C. After addition the reaction was brought to room temperature and the mixture stirred over night after which time LC-MS analysis showed a complete conversion. The crude mixture was concentrated and the residue dissolved in 300 mL of ethylacetate, washed with brine, dried over MgSO4 and evaporated to yield crude title product which was purified over a silica gel column (eluent: CH2Cl2/EtOAc) to obtain the desired product as pale yellow foam. LCMS (Method GR) RT 1.23 min, [M+H]+ 450/452; 1H-NMR (CDCl3, 400 MHz): 2.7 (s, 3H), 3.70 (d, 2H), 4.10 (d, 2H), 7.60 (s, 3H), 7.01 (d, 1H), 8.15 (d, 2H), 7.01 (d, 1H), 8.15 (d, 2H), 11.40 (s, 1H); 19F-NMR (CDCl3, 376 MHz): −79.38.

후처리

  1. additionAfter addition the reaction
  2. customwas brought to room temperature
  3. concentrationThe crude mixture was concentrated
  4. dissolutionthe residue dissolved in 300 mL of ethylacetate
  5. washwashed with brine
  6. dry with materialdried over MgSO4
  7. customevaporated
  8. customto yield crude title product which
  9. customwas purified over a silica gel column (eluent: CH2Cl2/EtOAc)

출처 및 근거

ORD 기록
ord-2f76df525dff49ffa877ecb6f8d99fad
출처 데이터셋
uspto-grants-2016_02
특허 번호
US09247740B2

반응 노트

불러오는 중…