2-[6-(4-Benzyloxy-butyl)-benzoimidazol-1-yl]-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid ethyl ester → 4-(3-Chloro-phenyl)-2-[6-(4-hydroxy-butyl)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid ethyl ester

HRID 1667764ノート

反応式

HRID 1667764 の反応式
[CH2:1]([O:3][C:4]([C:6]1[S:10][C:9]([N:11]2[C:15]3[CH:16]=[C:17]([CH2:20][CH2:21][CH2:22][CH2:23][O:24]CC4C=CC=CC=4)[CH:18]=[CH:19][C:14]=3[N:13]=[CH:12]2)=[N:8][C:7]=1[C:32]1[CH:37]=[CH:36][CH:35]=[C:34]([Cl:38])[CH:33]=1)=[O:5])[CH3:2]>C(#N)C>[CH2:1]([O:3][C:4]([C:6]1[S:10][C:9]([N:11]2[C:15]3[CH:16]=[C:17]([CH2:20][CH2:21][CH2:22][CH2:23][OH:24])[CH:18]=[CH:19][C:14]=3[N:13]=[CH:12]2)=[N:8][C:7]=1[C:32]1[CH:37]=[CH:36][CH:35]=[C:34]([Cl:38])[CH:33]=1)=[O:5])[CH3:2]

参加物

3

反応物 1

HCID 674472132-[6-(4-Benzyloxy-butyl)-benzoimidazol-1-yl]-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid ethyl ester

生成物 1

HCID 674467194-(3-Chloro-phenyl)-2-[6-(4-hydroxy-butyl)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid ethyl ester収率 73.4%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

実験手順

To a mixture of 0.434 g (0.795 mmole) of 2-[6-(4-benzyloxy-butyl)-benzoimidazol-1-yl]-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid ethyl ester (I.41c) and 5 mL of acetonitrile at 0 degrees was added dropwise 0.836 mL (0.795 mmole) of boron trifluoride-dimethyl sulfide complex. The mixture was stirred at ambient temperature for 2 hours and then concentrated under reduced pressure. Saturated sodium bicarbonate was added to the residue and the mixture was extracted three times with 15 mL of dichloromethane. The combined organic layers were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography, eluting with methanol-dichloromethane (gradient 0:100-3:97) to give 0.266 g of 4-(3-chloro-phenyl)-2-[6-(4-hydroxy-butyl)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid ethyl ester (I.41d) as a white solid.

後処理

  1. additionwas added dropwise 0.836 mL (0.795 mmole) of boron trifluoride-dimethyl sulfide complex
  2. concentrationconcentrated under reduced pressure
  3. additionSaturated sodium bicarbonate was added to the residue
  4. extractionthe mixture was extracted three times with 15 mL of dichloromethane
  5. washThe combined organic layers were washed with brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customThe residue was purified by silica gel chromatography
  10. washeluting with methanol-dichloromethane (gradient 0:100-3:97)

出典と根拠

ORDレコード
ord-3c4989212cf741849fac1f83379db93a
出典データセット
uspto-grants-2011_10
特許番号
US08044213B2

反応ノート

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