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Triphenylphosphine → 4'-bromo-1'-(pyridin-2-ylmethyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one

HRID 545832
ノート
印刷プレビュー

反応式

HRID 545832 の反応式
[Br:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]([C:21]1[C:22](O)=[CH:23][C:24]3[O:28][CH2:27][CH2:26][C:25]=3[CH:29]=1)([CH2:19][OH:20])[C:5](=[O:18])[N:6]2[CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>O1CCOCC1>[Br:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]1([CH2:19][O:20][C:22]3[CH:23]=[C:24]4[C:25](=[CH:29][C:21]1=3)[CH2:26][CH2:27][O:28]4)[C:5](=[O:18])[N:6]2[CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 588725124-bromo-3-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-3-(hydroxymethyl)-1-(Pyridin-2-ylmethyl)-1,3-dihydro-2H-indol-2-one

生成物 1

HCID 592634004'-bromo-1'-(pyridin-2-ylmethyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one収率 37%

試薬・触媒・溶媒 1

HCID 31275
1,4-Dioxane
溶媒

実験手順

A mixture of 4-bromo-3-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-3-(hydroxymethyl)-1-(pyridin-2-ylmethyl)-1,3-dihydro-2H-indol-2-one (1.81 g, 3.88 mmol), triphenylphosphine (2.04 g, 7.77 mmol) and diisopropyl azodicarboxylate (1.57 g, 7.77 mmol) in anhydrous dioxane (60 mL) was heated at reflux for 16 h. After cooling down to ambient temperature, the solvent was removed in vacuo. The gummy residue was diluted with ethyl acetate (50.0 mL), washed with water (3×25.0 mL), brine (3×25.0 mL), dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to dryness. The residue was subjected to column chromatography eluting with ethyl acetate/hexane (80%) to give the title compound (0.64 g, 37%) as colorless solid: mp >200° C.; 1H NMR (300 MHz, DMSO-d6) δ 8.47 (d, 1H), 7.77 (dt, 1H), 7.37 (d, 1H), 7.27 (dt, 1H), 7.19-7.13 (m, 2H), 6.94 (dd, 1H), 6.61 (s, 1H), 6.33 (s, 1H), 5.08 (d, 1H), 5.03 (d, 1H), 4.93 (d, 1H), 4.74 (d, 1H), 4.48 (t, J=8.6 Hz, 2H), 2.96 (t, 2H); 13C NMR (75 MHz, DMSO-d6) δ 177.4, 162.2, 161.8, 155.3, 149.8, 145.3, 137.6, 131.0, 130.5, 126.8, 123.3, 122.2, 119.9, 119.5, 119.0, 118.1, 109.3, 92.4, 77.5, 72.5, 58.8, 45.3, 28.8; MS (ES+) m/z 451.3 (M+1).

後処理

  1. temperaturewas heated
  2. temperatureat reflux for 16 h
  3. customthe solvent was removed in vacuo
  4. additionThe gummy residue was diluted with ethyl acetate (50.0 mL)
  5. washwashed with water (3×25.0 mL), brine (3×25.0 mL)
  6. dry with materialdried over anhydrous sodium sulfate
  7. filtrationfiltered
  8. concentrationThe filtrate was concentrated in vacuo to dryness
  9. washeluting with ethyl acetate/hexane (80%)

出典と根拠

ORDレコード
ord-dd8c6599b1f5419fb68575f118b85c3c
出典データセット
uspto-grants-2011_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07935721B2

反応ノート

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