Sodium hydride → 4-chloro-5-(2-fluoropyridin-3-yl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde

HRID 2070503ノート

反応式

HRID 2070503 の反応式
[Cl:1][C:2]1[C:3]([CH:14]=[O:15])=[CH:4][NH:5][C:6]=1[C:7]1[C:8]([F:13])=[N:9][CH:10]=[CH:11][CH:12]=1.[H-].[Na+].C1OCCOCCOCCOCCOC1.[N:33]1[CH:38]=[CH:37][CH:36]=[C:35]([S:39](Cl)(=[O:41])=[O:40])[CH:34]=1>O1CCCC1.[Cl-].[Na+].O>[Cl:1][C:2]1[C:3]([CH:14]=[O:15])=[CH:4][N:5]([S:39]([C:35]2[CH:34]=[N:33][CH:38]=[CH:37][CH:36]=2)(=[O:41])=[O:40])[C:6]=1[C:7]1[C:8]([F:13])=[N:9][CH:10]=[CH:11][CH:12]=1

参加物

7

反応物 4

HCID 24758Sodium hydrideHCID 3633615-Crown-5HCID 3164136Pyridine-3-sulfonyl chlorideHCID 866239794-chloro-5-(2-fluoropyridin-3-yl)-1H-pyrrole-3-carbaldehyde

生成物 1

HCID 866310044-chloro-5-(2-fluoropyridin-3-yl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde収率 81.4%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 57417360Sodium chloride; water溶媒

実験手順

To a solution (20 mL) of 4-chloro-5-(2-fluoropyridin-3-yl)-1H-pyrrole-3-carbaldehyde (270 mg) in tetrahydrofuran was added sodium hydride (60% in oil, 100 mg) at room temperature and the mixture was stirred for 30 min. 15-Crown-5 (530 mg) was added dropwise and the mixture was stirred for 30 min. 3-Pyridylsulfonyl chloride (321 mg) was added, and the mixture was further stirred for 1 hr. The reaction mixture was diluted with saturated brine, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=1:1→1:4), and crystallized from diethyl ether to give the title compound as colorless crystals (yield 358 mg, 81%).

後処理

  1. stirringthe mixture was stirred for 30 min
  2. stirringthe mixture was further stirred for 1 hr
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe extract was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=1:1→1:4)
  8. customcrystallized from diethyl ether

出典と根拠

ORDレコード
ord-839840e7579a46e7881d139d1969f756
出典データセット
uspto-grants-2012_10
特許番号
US08299261B2

反応ノート

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