Sodium bis(trimethylsilyl)amide → N-tert-Butyl-2-(2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-1-yl)-N-phenyl-acetamide

HRID 343149ノート

反応式

HRID 343149 の反応式
[C:1]1([N:7]2[C:13](=[O:14])[CH2:12][C:11](=[O:15])[NH:10][C:9]3[CH:16]=[CH:17][CH:18]=[CH:19][C:8]2=3)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C[Si]([N-][Si](C)(C)C)(C)C.[Na+].Br[CH2:31][C:32]([N:34]([C:41]([CH3:44])([CH3:43])[CH3:42])[C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1)=[O:33]>CN(C=O)C.C1COCC1>[C:41]([N:34]([C:35]1[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=1)[C:32](=[O:33])[CH2:31][N:10]1[C:11](=[O:15])[CH2:12][C:13](=[O:14])[N:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[C:8]2[CH:19]=[CH:18][CH:17]=[CH:16][C:9]1=2)([CH3:42])([CH3:43])[CH3:44]

参加物

6

反応物 3

HCID 2724254Sodium bis(trimethylsilyl)amideHCID 10824683N-Desmethyl Dechloro ClobazamHCID 108258822-Bromo-N-tert-butyl-N-phenyl-acetamide

生成物 1

HCID 10789281N-tert-Butyl-2-(2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-1-yl)-N-phenyl-acetamide収率 71%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒2 回HCID 8028Tetrahydrofuran溶媒

実験手順

To a stirred solution of 600 mg (2.38 mmol) 1-Phenyl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-2,4-dione in 16 mL DMF is added 2.62 mL (2.62 mmol, 1.1 equiv) of 1M Sodium bis(trimethylsilyl)amide in THF at ambient temperature and stirred 0.5 h. To this solution is added 707 mg (2.62 mmol, 1.1 equiv) 2-Bromo-N-tert-butyl-N-phenyl-acetamide, prepared as in Part A, in 4 mL DMF and stirred 18 h at ambient temperature. The solvent is removed in vacuo and the residue taken into 50 mL EtOAc, washed successively with H2O (30 mL), 1N HCl (30 mL), satd. NaHCO3 (30 mL), and brine (30 mL), dried (MgSO4), filtered and concentrated in vacuo to a brown oil. The crude product is purified by flash chromatography on 40 g silica gel eluted successively with EtOAc/Hexanes (2:3, 500 mL), (1:1, 750 mL). Appropriate fractions were combined and concentrated in vacuo to give 748 mg (1.69 mmol) of N-tert-Butyl-2-(2,4-dioxo-5-phenyl-2,3,4,5,-tetrahydro-benzo[b][1,4]diazepin-1-yl)-N-phenyl-acetamide as a white foam: 1H NMR (CDCl3, 300 MHz) δ7.45-7.21 (m, 12H), 7.08 (t, 1H), 6.90 (m, 1H), 4.30 (d, 1H, J=16.4), 3.85 (d, 1H, J=16.6), 3.59 (d, 1H, J=12.0), 3.49 (d, 1H, J=11.9), 1.43 (s, 9H); TLC Rf =0.24 (EtOAc/Hexanes, 1:1).

後処理

  1. additionTo this solution is added
  2. customThe solvent is removed in vacuo
  3. washwashed successively with H2O (30 mL), 1N HCl (30 mL)
  4. dry with materialNaHCO3 (30 mL), and brine (30 mL), dried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo to a brown oil
  7. customThe crude product is purified by flash chromatography on 40 g silica gel
  8. washeluted successively with EtOAc/Hexanes (2:3, 500 mL), (1:1, 750 mL)
  9. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-4254d212a29946edaf673db7300c3acb
出典データセット
uspto-grants-1999_01
特許番号
US05859007

反応ノート

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