Sodium hydride → 2-[4-(4-Bromo-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazol-2-yl]-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 79894

反応式

HRID 79894 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH:11]([OH:13])[CH2:10][CH:9]1[C:14]1[NH:15][C:16]([C:19]2[CH:24]=[CH:23][C:22]([Br:25])=[CH:21][CH:20]=2)=[CH:17][N:18]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].[CH3:28][Si:29]([CH2:32][CH2:33][O:34][CH2:35]Cl)([CH3:31])[CH3:30]>CN(C=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH:11]([OH:13])[CH2:10][CH:9]1[C:14]1[N:18]([CH2:35][O:34][CH2:33][CH2:32][Si:29]([CH3:31])([CH3:30])[CH3:28])[CH:17]=[C:16]([C:19]2[CH:24]=[CH:23][C:22]([Br:25])=[CH:21][CH:20]=2)[N:15]=1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

5

反応物 3

HCID 24758Sodium hydrideHCID 27242712-Chloromethyl 2-(trimethylsilyl)ethyl etherHCID 666203882-[5-(4-Bromo-phenyl)-1H-imidazol-2-yl]-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester

生成物 1

HCID 666211532-[4-(4-Bromo-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazol-2-yl]-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester収率 98%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

2-[5-(4-Bromo-phenyl)-1H-imidazol-2-yl]-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester (500 mg) was dissolved in DMF (8 mL), and NaH (54 mg ) was added. The mixture was stirred over 10 min. and SEM-Cl was added slowly, and then stirred for 2 hours. The mixture was quenched with 3 mL of sat. NH4Cl and was taken up in ethyl acetate (100 mL). The organic phase was washed with saturated sodium bicarbonate (1×100 mL) and dried over sodium sulfate. After the solvent was removed, the resulting oil was subjected to silica gel chromatography using effluent of 20-50% ethyl acetate and hexanes. The fractions containing product were combined and the solvent was removed under reduced pressure to provide 2-[4-(4-Bromo-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazol-2-yl]-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester (648 mg, 98%) as an off-white solid.

後処理

  1. stirringstirred for 2 hours
  2. customThe mixture was quenched with 3 mL of sat. NH4Cl
  3. washThe organic phase was washed with saturated sodium bicarbonate (1×100 mL)
  4. dry with materialdried over sodium sulfate
  5. customAfter the solvent was removed
  6. additionThe fractions containing product
  7. customthe solvent was removed under reduced pressure

出典と根拠

ORDレコード
ord-2aab5d59963347258f2f6d9907a2e1ad
出典データセット
uspto-grants-2014_09
特許番号
US08841278B2

関連ノート

読み込み中…