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Methyl iodide → 1-cyclopropyl-5,6-difluoro-2-[5-(2-methoxypropan-2-yl)pyridin-3-yl]-1H-benzimidazole

HRID 1048957
ノート
印刷プレビュー

反応式

HRID 1048957 の反応式
[CH:1]1([N:4]2[C:8]3[CH:9]=[C:10]([F:14])[C:11]([F:13])=[CH:12][C:7]=3[N:6]=[C:5]2[C:15]2[CH:16]=[C:17]([C:21]([OH:24])([CH3:23])[CH3:22])[CH:18]=[N:19][CH:20]=2)[CH2:3][CH2:2]1.[H-].[Na+].I[CH3:28]>O1CCCC1.C(OCC)(=O)C>[CH:1]1([N:4]2[C:8]3[CH:9]=[C:10]([F:14])[C:11]([F:13])=[CH:12][C:7]=3[N:6]=[C:5]2[C:15]2[CH:20]=[N:19][CH:18]=[C:17]([C:21]([O:24][CH3:28])([CH3:22])[CH3:23])[CH:16]=2)[CH2:3][CH2:2]1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 566455682-[5-(1-Cyclopropyl-5,6-difluoro-1H-benzimidazol-2-yl)pyridin-3-yl]propan-2-ol

生成物 1

HCID 666847641-cyclopropyl-5,6-difluoro-2-[5-(2-methoxypropan-2-yl)pyridin-3-yl]-1H-benzimidazole

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒
HCID 8857
Ethyl Acetate
溶媒

実験手順

To a cooled (0° C.) solution of 2-[5-(1-Cyclopropyl-5,6-difluoro-1H-benzimidazol-2-yl)pyridin-3-yl]propan-2-ol (from Example 38 Step E) (0.086 g, 0.26 mmol) in tetrahydrofuran (1.3 mL) was added sodium hydride (60% dispersion in mineral oil, 0.026 g, 0.65 mmol). After 1 hour, iodomethane (0.024 mL, 0.389 mmol) was added. The reaction was then warmed to room temperature and stirred overnight. The reaction mixture was diluted with ethyl acetate, washed with water and brine, dried over magnesium sulfate, filtered and concentrated. Purification by flash chromatography on silica gel (30-60% ethyl acetate in hexanes) provided the title compound: LCMS m/z 344.03 [M+H]+; 1H NMR (500 MHz, CDCl3) δ 9.09 (d, J=1.9 H, 1 H), 8.79 (d, J=2.0 Hz, 1 H), 8.29 (t, J=2.0, 2.0 Hz, 1 H), 7.58 (dd, J=10.3, 7.3 Hz, 1 H), 7.40 (dd, J=9.7, 7.1 Hz, 1 H), 3.59-3.57 (m, 1 H), 3.16 (s, 3 H), 1.63 (s, 3 H), 1.60 (s, 3 H), 1.20-1.17 (m, 2 H), 0.79-0.76 (m, 2 H).

後処理

  1. washwashed with water and brine
  2. dry with materialdried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customPurification by flash chromatography on silica gel (30-60% ethyl acetate in hexanes)

出典と根拠

ORDレコード
ord-aeaec93be35f41a6b4795fe06c1338ec
出典データセット
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09382226B2

反応ノート

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