Trifluoroacetic acid → Benzyl 2-amino-3-(3-(benzyloxy)phenyl)propanoate

HRID 1397874ノート

反応式

HRID 1397874 の反応式
[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([CH2:15][CH:16]([NH:27]C(OC(C)(C)C)=O)[C:17]([O:19][CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[O:18])[CH:12]=[CH:13][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl>[NH2:27][CH:16]([CH2:15][C:11]1[CH:12]=[CH:13][CH:14]=[C:9]([O:8][CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH:10]=1)[C:17]([O:19][CH2:20][C:21]1[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=1)=[O:18]

参加物

4

反応物 2

HCID 6422Trifluoroacetic acidHCID 22623796Benzyl 3-(3-(benzyloxy)phenyl)-2-(tert-butoxycarbonylamino)propanoate

生成物 1

HCID 67257589Benzyl 2-amino-3-(3-(benzyloxy)phenyl)propanoate収率 100.5%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

172 (610 mg) was dissolved in 4 ml of DCM and 4 ml of TFA was added then the reaction mixture was let 1 h at room temperature. The reaction mixture is concentrated and 50 ml of AcOEt are added. The organic phase are washed with saturated NaHCO3 and brine then dried over Na2SO4, filtered and concentrated. The crude product was purified by flash chromatography (AcOEt/Hexane 2/8) to afford 173 as white solid (480 mg, 85%). 1H NMR (DMSO): δ 2.90 (m, 2H), 3.73 (t, 1H, J=7.4 Hz), 5.19 (s, 4H), 6.70 (d, 1H, J=7.3 Hz), 6.74 (m, 2H), 6.97 (m, 1H), 7.17 (t, 1H, J=7.9 Hz), 7.41 (d, 2H, J=6.5 Hz), 7.48 (m, 2H), 9.37 (s, 2H).

後処理

  1. concentrationThe reaction mixture is concentrated
  2. addition50 ml of AcOEt are added
  3. washThe organic phase are washed with saturated NaHCO3 and brine
  4. dry with materialthen dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude product was purified by flash chromatography (AcOEt/Hexane 2/8)

出典と根拠

ORDレコード
ord-a717b8dd65da40cd9edf6121f5c0ba44
出典データセット
uspto-grants-2014_12
特許番号
US08901295B2

反応ノート

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