Sodium Hydroxide → 5-((2'-oxo-6H-spiro[benzofuro[6,5-d][1,3]dioxole-7,3'-indoline]-1'-yl)methyl)-2-(trifluoromethyl)furan-3-carboxylic acid

HRID 1407471노트

반응식

HRID 1407471 반응식
[O:1]=[C:2]1[C:10]2([C:14]3=[CH:15][C:16]4[O:20][CH2:19][O:18][C:17]=4[CH:21]=[C:13]3[O:12][CH2:11]2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[CH2:22][C:23]1[O:27][C:26]([C:28]([F:31])([F:30])[F:29])=[C:25]([C:32]([O:34]CC)=[O:33])[CH:24]=1.[OH-].[Na+]>C(O)C.O>[O:1]=[C:2]1[C:10]2([C:14]3=[CH:15][C:16]4[O:20][CH2:19][O:18][C:17]=4[CH:21]=[C:13]3[O:12][CH2:11]2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[CH2:22][C:23]1[O:27][C:26]([C:28]([F:31])([F:30])[F:29])=[C:25]([C:32]([OH:34])=[O:33])[CH:24]=1

참가 물질

5

반응물 2

HCID 14798Sodium HydroxideHCID 68598357ethyl 5-[(2'-oxospiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-1'(2'H)-yl)methyl]-2-(trifluoromethyl)furan-3-carboxylate

생성물 1

HCID 685965505-((2'-oxo-6H-spiro[benzofuro[6,5-d][1,3]dioxole-7,3'-indoline]-1'-yl)methyl)-2-(trifluoromethyl)furan-3-carboxylic acid수율 84%

시약·촉매·용매 2

HCID 702Ethanol용매HCID 962Water용매

실험 절차

To a solution of ethyl 5-[(2′-oxospiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-1′(2′H)-yl)methyl]-2-(trifluoromethyl)furan-3-carboxylate (1.30 g, 2.59 mmol) in ethanol (8 mL) and water (1.7 mL) was added sodium hydroxide (0.12 g, 3.00 mmol). The reaction mixture was heated at reflux for 45 min, concentrated in vacuo to remove ethanol. To the residue was added water (15 mL) and the mixture was acidified to pH˜3 by 10% hydrochloric acid at 0° C. The resulting mixture was extracted with ethyl acetate (3×50 mL). The organic layer was washed with water and brine, dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to give 5-((2′-oxo-6H-spiro[benzofuro[6,5-d][1,3]dioxole-7,3′-indoline]-1′-yl)methyl)-2-(trifluoromethyl)furan-3-carboxylic acid (1.03 g, 84%): mp 195-197° C.; 1H NMR (300 MHz, DMSO-d6) δ 7.13-7.26 (m, 1H), 7.17-7.15 (m, 2H), 7.05-7.00 (m, 2H), 6.67 (s, 1H), 6.09 (s, 1H), 5.90-5.88 (m, 2H), 5.11-4.96 (m, 2H), 4.80-4.66 (m, 2H); 13C NMR (75 MHz, DMSO-d6) δ 177.0, 161.9, 155.8, 152.3, 148.9, 142.2, 141.9, 141.5, 132.1, 129.3, 124.1, 123.8, 122.2, 120.6, 120.1, 117.0, 111.8, 109.7, 103.1, 101.9, 93.8, 80.1, 57.9, 36.7; MS (ES−) m/z 472.0 (M−1).

후처리

  1. temperatureThe reaction mixture was heated
  2. temperatureat reflux for 45 min
  3. concentrationconcentrated in vacuo
  4. customto remove ethanol
  5. additionTo the residue was added water (15 mL)
  6. customwas acidified to pH˜3 by 10% hydrochloric acid at 0° C
  7. extractionThe resulting mixture was extracted with ethyl acetate (3×50 mL)
  8. washThe organic layer was washed with water and brine
  9. dry with materialdried over anhydrous sodium sulfate
  10. filtrationfiltered
  11. concentrationThe filtrate was concentrated in vacuo

출처 및 근거

ORD 기록
ord-b42b9ed4e7824b6eba7bad16315c5083
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08916580B2

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