Acetic Acid → tert-butyl (S)-4-((R)-1-(1-benzyl-4-(2,5-difluorophenyl)-1H-imidazol-2-yl)-2,2-dimethylpropylamino)-1-methoxybutan-2-ylcarbamate

HRID 1881341ノート

反応式

HRID 1881341 の反応式
[CH2:1]([N:8]1[CH:12]=[C:11]([C:13]2[CH:18]=[C:17]([F:19])[CH:16]=[CH:15][C:14]=2[F:20])[N:10]=[C:9]1[C@H:21]([NH2:26])[C:22]([CH3:25])([CH3:24])[CH3:23])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:27]([CH2:29][C@H:30]([NH:34][C:35](=[O:41])[O:36][C:37]([CH3:40])([CH3:39])[CH3:38])[CH2:31][O:32][CH3:33])=O.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCl>[CH2:1]([N:8]1[CH:12]=[C:11]([C:13]2[CH:18]=[C:17]([F:19])[CH:16]=[CH:15][C:14]=2[F:20])[N:10]=[C:9]1[C@H:21]([NH:26][CH2:27][CH2:29][C@H:30]([NH:34][C:35](=[O:41])[O:36][C:37]([CH3:40])([CH3:39])[CH3:38])[CH2:31][O:32][CH3:33])[C:22]([CH3:23])([CH3:25])[CH3:24])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

6

反応物 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 57805652(R)-1-(1-benzyl-4-(2,5-difluorophenyl)-1H-imidazol-2-yl)-2,2-dimethylpropan-1-amineHCID 57976564tert-butyl (S)-1-formyl-3-methoxypropan-2-ylcarbamate

生成物 1

HCID 86602597tert-butyl (S)-4-((R)-1-(1-benzyl-4-(2,5-difluorophenyl)-1H-imidazol-2-yl)-2,2-dimethylpropylamino)-1-methoxybutan-2-ylcarbamate

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To (R)-1-(1-benzyl-4-(2,5-difluorophenyl)-1H-imidazol-2-yl)-2,2-dimethylpropan-1-amine (1 eq) in dichloromethane was added tert-butyl (S)-1-formyl-3-methoxypropan-2-ylcarbamate (1.5 eq) and acetic acid (1 eq). The reaction mixture was stirred at room temperature for 1 h. Sodium triacetoxy borohydride (2 eq) was added at 0° C. The reaction mixture was warmed to room temperature and stirred overnight. Solvent was concentrated and crude was partitioned between ethyl acetate and satd. sodium bicarbonate. The organic layer was washed with water, brine and dried over sodium sulfate. Purification by silica gel chromatography (25% EtOAc/Hexane) provide pure product as a white foamy solid.

後処理

  1. temperatureThe reaction mixture was warmed to room temperature
  2. stirringstirred overnight
  3. concentrationSolvent was concentrated
  4. customcrude was partitioned between ethyl acetate
  5. washThe organic layer was washed with water, brine
  6. dry with materialdried over sodium sulfate
  7. customPurification by silica gel chromatography (25% EtOAc/Hexane)
  8. customprovide pure product as a white foamy solid

出典と根拠

ORDレコード
ord-cfe4fedcb2554fff931c329cc2d5b136
出典データセット
uspto-grants-2012_11
特許番号
US08318791B2

反応ノート

読み込み中…