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Hexane → (2S)-3-isopropoxy-N-(5-methylpyridin-2-yl)-2-(1-(3-methylpyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)propanamide

HRID 1097996
ノート
印刷プレビュー

反応式

HRID 1097996 の反応式
C[Al](C)C.CCCCCC.[CH3:11][C:12]1[CH:13]=[CH:14][C:15]([NH2:18])=[N:16][CH:17]=1.[CH:19]([O:22][CH2:23][C@H:24]([O:29][C:30]1[N:35]=[CH:34][N:33]=[C:32]2[N:36]([C:39]3[C:44]([CH3:45])=[CH:43][CH:42]=[CH:41][N:40]=3)[N:37]=[CH:38][C:31]=12)[C:25](OC)=[O:26])([CH3:21])[CH3:20]>C1(C)C=CC=CC=1>[CH:19]([O:22][CH2:23][C@H:24]([O:29][C:30]1[N:35]=[CH:34][N:33]=[C:32]2[N:36]([C:39]3[C:44]([CH3:45])=[CH:43][CH:42]=[CH:41][N:40]=3)[N:37]=[CH:38][C:31]=12)[C:25]([NH:18][C:15]1[CH:14]=[CH:13][C:12]([CH3:11])=[CH:17][N:16]=1)=[O:26])([CH3:21])[CH3:20]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 8058HexaneHCID 153482-Amino-5-methylpyridineHCID 16682925TrimethylaluminumHCID 59279495(2S)-Methyl 3-isopropoxy-2-(1-(3-methylpyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)propanoate

生成物 1

HCID 57504349(2S)-3-isopropoxy-N-(5-methylpyridin-2-yl)-2-(1-(3-methylpyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)propanamide収率 51.1%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒2 回

反応条件

温度
5 °C

実験手順

A 2M solution of trimethylaluminium in hexane (0.404 mL, 0.81 mmol) was added to 5-methylpyridin-2-amine (84 mg, 0.77 mmol) in toluene (22 mL) at 5° C. under nitrogen. The resulting solution was stirred at 5° C. for 20 minutes. (2S)-Methyl 3-isopropoxy-2-(1-(3-methylpyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)propanoate (300 mg, 0.70 mmol) (Intermediate J5) in toluene (6 mL) was added dropwise at 5° C. After the addition was complete, the solution was allowed to warm to ambient temperature and was then heated to reflux for 16 hours. The solution was allowed to cool to ambient temperature. The reaction mixture was concentrated, diluted with EtOAc (100 mL) and washed sequentially with 1M citric acid (50 mL), then saturated brine (50 mL). The organic layer was separated, dried (MgSO4) and evaporated. The residue was purified by flash silica chromatography, eluting with EtOAc to afford (2S)-3-isopropoxy-N-(5-methylpyridin-2-yl)-2-(1-(3-methylpyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)propanamide (160 mg, 51%). 1H NMR (400 MHz, CDCl3) δ 1.09-1.12 (6H, m), 2.23 (3H, s), 2.26 (3H, s), 3.62-3.68 (1H, m), 4.00-4.09 (2H, m), 5.97 (1H, t), 7.30-7.33 (1H, m), 7.56-7.59 (1H, d), 7.70-7.73 (1H, d), 8.01-8.01 (1H, s), 8.21 (1H, d), 8.44 (1H, s), 8.46 (1H, m) 8.53 (1H, s), 9.5 (1H, broad s); m/z (ESI+) (M+H)+=448; HPLC tR=1.98 min.

後処理

  1. additionAfter the addition
  2. temperatureto warm to ambient temperature
  3. temperaturewas then heated
  4. temperatureto reflux for 16 hours
  5. temperatureto cool to ambient temperature
  6. concentrationThe reaction mixture was concentrated
  7. additiondiluted with EtOAc (100 mL)
  8. washwashed sequentially with 1M citric acid (50 mL)
  9. customThe organic layer was separated
  10. dry with materialdried (MgSO4)
  11. customevaporated
  12. customThe residue was purified by flash silica chromatography
  13. washeluting with EtOAc

出典と根拠

ORDレコード
ord-670b6f7f85234565b841fc56631a1abd
出典データセット
uspto-grants-2012_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08143263B2

反応ノート

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