Ethyl Acetate → tert-butyl N-[(3S)-2-oxo-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-3-yl]carbamate

HRID 862242ノート

反応式

HRID 862242 の反応式
Cl.CN(C)CCCN=C=NCC.[C:13]([O:17][C:18]([NH:20][CH:21]([CH2:25][NH:26][C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=1[NH2:33])[C:22](O)=[O:23])=[O:19])([CH3:16])([CH3:15])[CH3:14].C(OCC)(=O)C>CN(C)C=O>[C:13]([O:17][C:18]([NH:20][C@@H:21]1[C:22](=[O:23])[NH:33][C:28]2[CH:29]=[CH:30][CH:31]=[CH:32][C:27]=2[NH:26][CH2:25]1)=[O:19])([CH3:16])([CH3:15])[CH3:14]

参加物

5

反応物 3

HCID 8857Ethyl AcetateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 22243668HCID 22243668、化合物

生成物 1

HCID 22881971tert-butyl N-[(3S)-2-oxo-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-3-yl]carbamate収率 71.2%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (8.54 g, 44.5 mmol) was added to a cooled (0° C.) solution of 2-tert-butoxycarbonylamino-3-(2-aminophenylamino)propionic acid (11.95 g, 40.5 mmol) in 100 ml of dimethylformamide and stirred for 18 hours. The reaction was poured into 700 ml of ethyl acetate and washed four times with 100 ml of water. The organic layer was dried over anhydrous sodium sulfate, filtered, and evaporated to give a brown solid that was purified by flash chromatography eluting with 3:7 ethyl acetate/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 water
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. customevaporated
  5. customto give a brown solid that
  6. customwas purified by flash chromatography
  7. washeluting with 3:7 ethyl acetate/hexane

出典と根拠

ORDレコード
ord-34f21be6443a4af38b49468c42032315
出典データセット
uspto-grants-1998_02
特許番号
US05716929

反応ノート

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