Dimethylformamide → (R)-4-[4-(3-Ethoxymethyl-3,4-dihydro-1H-isoquinolin-2-ylmethyl)-3,5-diethyl-pyrazol-1-y]-3,5-dimethyl-benzaldehyde

HRID 1740106ノート

反応式

HRID 1740106 の反応式
C([Li])CCC.Br[C:7]1[CH:12]=[C:11]([CH3:13])[C:10]([N:14]2[C:18]([CH2:19][CH3:20])=[C:17]([CH2:21][N:22]3[C@@H:31]([CH2:32][O:33][CH2:34][CH3:35])[CH2:30][C:29]4[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=4)[CH2:23]3)[C:16]([CH2:36][CH3:37])=[N:15]2)=[C:9]([CH3:38])[CH:8]=1.CN(C)[CH:41]=[O:42]>O1CCCC1>[CH2:34]([O:33][CH2:32][C@H:31]1[CH2:30][C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[CH2:23][N:22]1[CH2:21][C:17]1[C:16]([CH2:36][CH3:37])=[N:15][N:14]([C:10]2[C:11]([CH3:13])=[CH:12][C:7]([CH:41]=[O:42])=[CH:8][C:9]=2[CH3:38])[C:18]=1[CH2:19][CH3:20])[CH3:35]

参加物

5

反応物 3

HCID 6228DimethylformamideHCID 53638919(R)-2-[1-(4-bromo-2,6-dimethylphenyl)-3,5-diethyl-1H-pyrazol-4-ylmethyl]-3-ethoxymethyl-1,2,3,4-tetrahydro-isoquinolineHCID 178418339Butyllithium

生成物 1

HCID 86754630(R)-4-[4-(3-Ethoxymethyl-3,4-dihydro-1H-isoquinolin-2-ylmethyl)-3,5-diethyl-pyrazol-1-y]-3,5-dimethyl-benzaldehyde収率 155.4%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
-78 °C

実験手順

To a solution of n-butyl lithium (2.5 M hexane solution; 0.043 ml, 0.11 mmol) chilled to -78° C., a solution of (R)-2-[1-(4-bromo-2,6-dimethylphenyl)-3,5-diethyl-1H-pyrazol-4-ylmethyl]-3-ethoxymethyl-1,2,3,4-tetrahydro-isoquinoline (50 mg, 0.098 mmol) in anhydrous tetrahydrofuran (0.2 ml) was added dropwise. After stirring at -78° C. for 10 minutes, anhydrous N,N-dimethylformamide (0.023 ml, 0.29 mmol) was added. The resulting mixture was warmed to ambient temperature and stirred for 1 hour. The reaction quenched by addition of aqueous ammonium chloride (1 ml) and then extracted with ethyl acetate/water (5 ml of each). The separated organic extract was washed with an equal volume solution of aqueous ammonium chloride, dried over anhydrous sodium sulfate, and concentrated in vacuo to afford a yellow oil (70 mg). Flash chromatography (silica gel, 40 micron mesh; elution with ethyl actate/hexane=1:4 in volume) afforded the title compound (14 mg) as a faint yellow oil.

後処理

  1. temperatureThe resulting mixture was warmed to ambient temperature
  2. stirringstirred for 1 hour
  3. customThe reaction quenched by addition of aqueous ammonium chloride (1 ml)
  4. extractionextracted with ethyl acetate/water (5 ml of each)
  5. extractionThe separated organic extract
  6. washwas washed with an equal volume solution of aqueous ammonium chloride
  7. dry with materialdried over anhydrous sodium sulfate
  8. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-fcae1f8e08af479ba2d57d42ec98c7ea
出典データセット
uspto-grants-1999_10
特許番号
US05968944

反応ノート

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