Tetrahydrofuran → 2-(2,4-Dimethoxy-benzyl)-4-(3-morpholin-4-yl-propoxy)-2,3-dihydro-1H-isoindole

HRID 41415

反応式

HRID 41415 の反応式
[CH3:1][O:2][C:3]1[CH:30]=[C:29]([O:31][CH3:32])[CH:28]=[CH:27][C:4]=1[CH2:5][N:6]1[C:14](=O)[C:13]2[C:8](=[CH:9][CH:10]=[CH:11][C:12]=2[O:16][CH2:17][CH2:18][CH2:19][N:20]2[CH2:25][CH2:24][O:23][CH2:22][CH2:21]2)[C:7]1=O.[H-].[Al+3].[Li+].[H-].[H-].[H-].C1COCC1>>[CH3:1][O:2][C:3]1[CH:30]=[C:29]([O:31][CH3:32])[CH:28]=[CH:27][C:4]=1[CH2:5][N:6]1[CH2:14][C:13]2[C:8](=[CH:9][CH:10]=[CH:11][C:12]=2[O:16][CH2:17][CH2:18][CH2:19][N:20]2[CH2:25][CH2:24][O:23][CH2:22][CH2:21]2)[CH2:7]1

参加物

4

反応物 3

HCID 8028TetrahydrofuranHCID 21226445Aluminium lithium hydrideHCID 592631552-(2,4-Dimethoxy-benzyl)-4-(3-morpholin-4-yl-propoxy)-isoindole-1,3-dione

生成物 1

HCID 592631052-(2,4-Dimethoxy-benzyl)-4-(3-morpholin-4-yl-propoxy)-2,3-dihydro-1H-isoindole収率 83.1%

実験手順

2-(2,4-Dimethoxy-benzyl)-4-(3-morpholin-4-yl-propoxy)-isoindole-1,3-dione (298 mg, 0.68 mmol) was treated with a 1M solution of lithium aluminium hydride in THF (5 mL, 5 mmol) and maintained at r.t. for 21 hours. The mixture was heated to 75° C. for 1 hour then cooled in ice and quenched by the dropwise addition of water (0.2 mL), 2N sodium hydroxide solution (0.4 mL) and water (0.4 mL). Magnesium sulfate was added, followed by ethyl acetate and then the mixture was stirred at r.t. for 1 hour. The solids were removed by filtration, being well washed with ethyl acetate. Concentration of the filtrate gave a crude product which was purified by flash chromatography on silica, eluting with 5% methanol in DCM. This afforded the title compound (233 mg, 83%) as a red oil. 1H NMR (methanol-d4) 7.24 (1H, d), 7.15 (1H, t), 6.80 (1H, d), 6.78 (1H, d), 6.56 (1H, d), 6.52 (1H, dd), 4.05 (2H, t), 3.94 (2H, s), 3.88 (2H, s), 3.87 (2H, s), 3.83 (3H, s), 3.80 (3H, s), 3.70-3.68 (4H, m), 2.54-2.50 (2H, m), 2.49-2.47 (4H, m), 2.00-1.93 (2H, m). MS: [M+H]+ 413.

後処理

  1. temperatureThe mixture was heated to 75° C. for 1 hour
  2. temperaturethen cooled in ice
  3. customquenched by the dropwise addition of water (0.2 mL), 2N sodium hydroxide solution (0.4 mL) and water (0.4 mL)
  4. additionMagnesium sulfate was added
  5. customThe solids were removed by filtration
  6. washbeing well washed with ethyl acetate
  7. customConcentration of the filtrate gave a crude product which
  8. customwas purified by flash chromatography on silica
  9. washeluting with 5% methanol in DCM

出典と根拠

ORDレコード
ord-359dc340a3594939842635d307da2266
出典データセット
uspto-grants-2013_09
特許番号
US08530469B2

関連ノート

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