Sodium hydride → HCID 68681230、化合物

HRID 2353947ノート

反応式

HRID 2353947 の反応式
[CH3:1][O:2][C:3](=[O:19])[C:4]1[CH:9]=[CH:8][C:7]([Br:10])=[C:6]([CH3:11])[C:5]=1[NH:12][C:13]([O:15][CH:16]([CH3:18])[CH3:17])=[O:14].[H-].[Na+].Br[CH2:23][CH2:24][CH2:25][C:26]([O:28][CH2:29][CH3:30])=[O:27]>CN(C=O)C.C(OCC)(=O)C>[CH3:1][O:2][C:3](=[O:19])[C:4]1[CH:9]=[CH:8][C:7]([Br:10])=[C:6]([CH3:11])[C:5]=1[N:12]([CH2:23][CH2:24][CH2:25][C:26]([O:28][CH2:29][CH3:30])=[O:27])[C:13]([O:15][CH:16]([CH3:17])[CH3:18])=[O:14]

参加物

6

反応物 3

HCID 24758Sodium hydrideHCID 76300Ethyl 4-bromobutyrateHCID 686790502-Isopropoxycarbonylamino-4-bromo-3-methyl-benzoic acid methyl ester

生成物 1

HCID 68681230HCID 68681230、化合物収率 77%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒2 回HCID 8857Ethyl Acetate溶媒

実験手順

Add a solution of 2-Isopropoxycarbonylamino-4-bromo-3-methyl-benzoic acid methyl ester (3.36 g, 10.18 mmol) in DMF (37 mL) to a suspension of sodium hydride 60% dispersion mineral oil (407 mg, 10.18 mmol) in DMF (37 mL) at 0° C. under an atmosphere of nitrogen and allow to reach room temperature over 1 h. Add ethyl 4-bromobutyrate (2.2 mL, 15.27 mmol) and stir at room temperature for 14 h. Dilute with ethyl acetate, wash with 1M HCl, water and brine. Dry the organic layer over anhydrous magnesium sulfate, filter and remove the solvent under reduced pressure. Purify the residue by flash chromatography, eluting with hexanes/ethyl acetate, to provide the titled compound (3.47 g, 77%): MS (ES+): 445 (M+H).

後処理

  1. washwash with 1M HCl, water and brine
  2. dry with materialDry the organic layer over anhydrous magnesium sulfate
  3. filtrationfilter
  4. customremove the solvent under reduced pressure
  5. customPurify the residue by flash chromatography
  6. washeluting with hexanes/ethyl acetate

出典と根拠

ORDレコード
ord-e61dec3c8eb94bf4b000dd9bbd1d7d35
出典データセット
uspto-grants-2010_07
特許番号
US07749992B2

反応ノート

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