Methyl iodide → 1'-{[(2S)-1-methyl-5-oxopyrrolidin-2-yl]methyl}-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1H)-one

HRID 1965697ノート

反応式

HRID 1965697 の反応式
[O:1]=[C:2]1[NH:6][C@H:5]([CH2:7][N:8]2[C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[C:10]3([CH2:20][O:19][C:18]4[CH:21]=[C:22]5[C:26](=[CH:27][C:17]3=4)[CH2:25][CH2:24][O:23]5)[C:9]2=[O:28])[CH2:4][CH2:3]1.[H-].[Na+].I[CH3:32]>CN(C)C=O>[CH3:32][N:6]1[C:2](=[O:1])[CH2:3][CH2:4][C@H:5]1[CH2:7][N:8]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[C:10]2([CH2:20][O:19][C:18]3[CH:21]=[C:22]4[C:26](=[CH:27][C:17]2=3)[CH2:25][CH2:24][O:23]4)[C:9]1=[O:28]

参加物

5

反応物 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 593520751'-{[(2S)-5-oxopyrrolidin-2-yl]methyl}-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one

生成物 1

HCID 593521491'-{[(2S)-1-methyl-5-oxopyrrolidin-2-yl]methyl}-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1H)-one収率 62%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a stirred solution of 1′-{[(2S)-5-oxopyrrolidin-2-yl]methyl}-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2′(1′H)-one (0.235 g, 0.623 mmol) in dry N,N-dimethylformamide (10 mL) was added sodium hydride (60% in mineral oil, 0.04 g, 1.04 mmol) at ambient temperature. The mixture was stirred for 15 min, and iodomethane (0.28 g, 2.0 mmol) was added in one portion. The reaction mixture was stirred at ambient temperature for 1 h, and concentrated to dryness. The residue was purified by flash chromatography (hexanes/ethyl acetate; gradient 0% to 30%) to afford 1′-{[(2S)-1-methyl-5-oxopyrrolidin-2-yl]methyl}-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2′(1H)-one (0.15 g, 62%) as colorless solid: mp 72-76° C.; 1H NMR (300 MHz, CDCl3) δ7.33 (dd, J=7.5, 7.5 Hz, 1H), 7.20 (d, J=7.5 Hz, 1H), 7.09 (dd, J=7.5, 7.5 Hz, 1H), 6.91 (d, J=7.5 Hz, 1H), 6.46-6.38 (m, 2H), 4.77 (ABq, 2H), 4.53 (t, J=8.6 Hz, 2H), 4.03-3.75 (m, 3H), 3.11-2.83 (m, 5H), 2.61-2.42 (m, 1H), 2.42-2.27 (m, 1H), 2.26-2.07 (m, 1H), 2.03-1.84 (m, 1H); 13C NMR (75 MHz, CDCl3) δ178.4, 178.4, 175.1, 175.0, 161.8, 161.3, 161.2, 142.1, 141.9, 132.5, 132.4, 128.9 (2C), 124.3, 124.2, 123.7 (2C), 120.0, 119.9, 119.7, 119.6, 118.6, 118.5, 108.0, 93.2, 80.5, 72.3, 58.1, 58.0, 57.5 (2C), 43.0, 42.9, 29.3, 29.2, 28.9, 28.7 (2C), 22.6 (2C); MS (ES+) m/z 391.1 (M+1).

後処理

  1. stirringThe reaction mixture was stirred at ambient temperature for 1 h
  2. concentrationconcentrated to dryness
  3. customThe residue was purified by flash chromatography (hexanes/ethyl acetate; gradient 0% to 30%)

出典と根拠

ORDレコード
ord-f1a5738015ac49018366005f77968788
出典データセット
uspto-grants-2013_04
特許番号
US08415370B2

反応ノート

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