Lithium hydroxide, monohydrate → {3-[(2'-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-1'(2'H)-yl)methyl]phenoxy}acetic acid

HRID 422867ノート

反応式

HRID 422867 の反応式
[O:1]=[C:2]1[C:10]2([CH2:14][O:13][C:12]3[CH:15]=[C:16]4[C:20](=[CH:21][C:11]2=3)[CH2:19][CH2:18][O:17]4)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[CH2:22][C:23]1[CH:24]=[C:25]([CH:33]=[CH:34][CH:35]=1)[O:26][CH2:27][C:28]([O:30]CC)=[O:29].O.[OH-].[Li+]>O1CCCC1.O>[O:1]=[C:2]1[C:10]2([CH2:14][O:13][C:12]3[CH:15]=[C:16]4[C:20](=[CH:21][C:11]2=3)[CH2:19][CH2:18][O:17]4)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[CH2:22][C:23]1[CH:24]=[C:25]([CH:33]=[CH:34][CH:35]=1)[O:26][CH2:27][C:28]([OH:30])=[O:29]

参加物

5

反応物 2

HCID 168937Lithium hydroxide, monohydrateHCID 45280396ethyl {3-[(2'-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-1'(2'H)-yl)methyl]phenoxy}acetate

生成物 1

HCID 45280397{3-[(2'-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-1'(2'H)-yl)methyl]phenoxy}acetic acid収率 95%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a stirred solution of ethyl {3-[(2′-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-1′(2′H)-yl)methyl]phenoxy}acetate (0.46 g, 0.98 mmol) in a mixture of tetrahydrofuran (30 mL) and water (15 mL) was added lithium hydroxide monohydrate (0.32 g, 2.3 mmol) at ambient temperature. The mixture was stirred at ambient temperature for 16 h. The mixture was concentrated in vacuo to a small volume, diluted with water (15 mL), washed with diethyl ether (60 mL), and acidified with 37% hydrochloric acid to pH 1. A white precipitate was formed. The mixture was extracted with ethyl acetate (3×60 mL). The combined organic solution was washed with water (30 mL), brine (50 mL), dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo to afford {3-[(2′-oxo-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-1′(2′H)-yl)methyl]phenoxy}acetic acid (0.41 g, 95%): mp 95-96° C.; 1H NMR (300 MHz, CDCl3) 7.33-7.14 (m, 3H), 7.07-6.97 (m, 2H), 6.92 (br s, 1H), 6.88-6.77 (m, 2H), 6.48 (s, 1H), 6.42 (s, 1H), 5.08-4.95 (m, 2H), 4.88-4.79 (m, 1H), 4.74-4.67 (m, 1H), 4.63 (s, 2H), 4.57-4.48 (m, 2H), 3.09-2.89 (m, 2H); 13C NMR (75 MHz, CDCl3) δ 178.2, 172.6, 161.8, 161.3, 157.9, 141.9, 137.6, 132.6, 130.1, 128.8, 123.9, 123.6, 120.9, 120.0, 118.9, 113.9, 113.7, 113.7, 109.3, 93.2, 80.5, 72.4, 64.7, 57.8, 44.0, 29.0; MS (ES+) m/z 444.0 (M+1).

後処理

  1. concentrationThe mixture was concentrated in vacuo to a small volume
  2. additiondiluted with water (15 mL)
  3. washwashed with diethyl ether (60 mL)
  4. customA white precipitate was formed
  5. extractionThe mixture was extracted with ethyl acetate (3×60 mL)
  6. washThe combined organic solution was washed with water (30 mL), brine (50 mL)
  7. dry with materialdried over anhydrous magnesium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-bc67b00ad7314423a1e0fd416f129826
出典データセット
uspto-grants-2012_01
特許番号
US08101647B2

反応ノート

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