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Ethyl Acetate → (3S)-2-Oxo-3-tert-butoxycarbonylamino-2,3,4,5-tetrahydro-1H-1,5-benzodiazepine-1-acetic acid methyl ester

HRID 363869
ノート
印刷プレビュー

反応式

HRID 363869 の反応式
Cl.CN(C)CCCN=C=NCC.[C:13]([O:17][C:18]([NH:20][C@@H:21]([CH2:25][NH:26][C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=1[NH2:33])[C:22]([OH:24])=O)=[O:19])([CH3:16])([CH3:15])[CH3:14].C[CH2:35][O:36][C:37]([CH3:39])=[O:38]>CN(C=O)C>[CH3:35][O:36][C:37](=[O:38])[CH2:39][N:33]1[C:28]2[CH:29]=[CH:30][CH:31]=[CH:32][C:27]=2[NH:26][CH2:25][C@H:21]([NH:20][C:18]([O:17][C:13]([CH3:14])([CH3:15])[CH3:16])=[O:19])[C:22]1=[O:24]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 8857Ethyl AcetateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 22881946(S)-3-((2-Aminophenyl)amino)-2-((tert-butoxycarbonyl)amino)propanoic acid

生成物 1

HCID 54305289(3S)-2-Oxo-3-tert-butoxycarbonylamino-2,3,4,5-tetrahydro-1H-1,5-benzodiazepine-1-acetic acid methyl ester収率 71%

試薬・触媒・溶媒 1

HCID 6228
Dimethylformamide
溶媒

実験手順

(3S)-2-Oxo-3-tert-Butoxycarbonylamino-1,3,4,5-tetrahydro-1H-1,5-benzodiazepine. 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (8.54 g, 44.5 mmol) was added to a cooled (0° C.) solution of (2S)-2-tert-butoxycarbonylamino-3-(2-aminophenylamino)propionic acid (11.95 g, 40.5 mmol) in 100 ml of DMF and stirred for 18 h. The reaction was poured into 700 ml of EtOAc and washed four times with 100 ml of H2O. The organic layer was dried over anhydrous Na2SO4, filtered, and evaporated to give a brown solid that was purified by flash chromatography eluting with 3:7 EtOAc/hexane to give 8 g (71%) of the title compound: 1H NMR (CDCl3) δ 7.78 (1H, s), 7.02-6.95 (1H, m), 6.88-6.82 (1H, m), 6.82-6.78 (1H, m), 6.75-6.70 (1H, m), 5.8-5.7 (1H, d), 4.55-4.45 (1H, m), 3.95 (1H, s), 3.9-3.82 (1H, m), 3.48-3.40 (1H,m), 1.45 (9H,s).

後処理

  1. washwashed four times with 100 ml of H2O
  2. dry with materialThe organic layer was dried over anhydrous Na2SO4
  3. filtrationfiltered
  4. customevaporated
  5. customto give a brown solid that
  6. customwas purified by flash chromatography
  7. washeluting with 3:7 EtOAc/hexane

出典と根拠

ORDレコード
ord-2422f374cade4f5490a1159fdf44ee13
出典データセット
uspto-grants-1999_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US05874424

反応ノート

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