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Water → tert-Butyl 3-(tert-butoxycarbonylphenylmethyl)-5-cyano-2-oxo-2,3-dihydro-benzimidazole-1-carboxylate

HRID 1643940
ノート
印刷プレビュー

反応式

HRID 1643940 の反応式
[C:1]([O:5][C:6]([CH:8]([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)[N:9]1[C:13]2[CH:14]=[C:15](I)[CH:16]=[CH:17][C:12]=2[N:11]([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[C:10]1=[O:26])=[O:7])([CH3:4])([CH3:3])[CH3:2].O.[CH3:34][N:35](C=O)C>[C-]#N.[Zn+2].[C-]#N>[C:1]([O:5][C:6]([CH:8]([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)[N:9]1[C:13]2[CH:14]=[C:15]([C:34]#[N:35])[CH:16]=[CH:17][C:12]=2[N:11]([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[C:10]1=[O:26])=[O:7])([CH3:4])([CH3:3])[CH3:2]
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 962WaterHCID 6228DimethylformamideHCID 66754745Tert-butyl 3-(tert-butoxycarbonylphenylmethyl)-5-iodo-2-oxo-2,3-dihydrobenzimidazole-1-carboxylate

生成物 1

HCID 66755109tert-Butyl 3-(tert-butoxycarbonylphenylmethyl)-5-cyano-2-oxo-2,3-dihydro-benzimidazole-1-carboxylate

試薬・触媒・溶媒 1

HCID 11186Zinc cyanide (Zn(CN)2)触媒

実験手順

1.74 (3.16 mmol) of tert-butyl 3-(tert-butoxycarbonylphenylmethyl)-5-iodo-2-oxo-2,3-dihydrobenzimidazole-1-carboxylate (XIIb) were dissolved in 20 ml of dry DMF and stirred under a stream of nitrogen for 20 min. 482 mg (4.11 mmol) of zinc(II) cyanide and 292 mmol (0.25 mmol) of Pd[P(Ph)3]4 were added, and the reaction solution was stirred at 80° C. for 1.5 h. The cooled reaction solution was mixed with 70 ml of water and extracted with ethyl acetate (3×). The combined organic phases were washed with saturated NaCl solution and dried over magnesium sulfate, and the solvent was removed in vacuo. The residue was purified by chromatography on silica gel (mobile phase gradient 10-30% ethyl acetate in cyclohexane). Yield: 1.08 g (76%) of white solid

後処理

  1. stirringthe reaction solution was stirred at 80° C. for 1.5 h
  2. customThe cooled reaction solution
  3. extractionextracted with ethyl acetate (3×)
  4. washThe combined organic phases were washed with saturated NaCl solution
  5. dry with materialdried over magnesium sulfate
  6. customthe solvent was removed in vacuo
  7. customThe residue was purified by chromatography on silica gel (mobile phase gradient 10-30% ethyl acetate in cyclohexane)

出典と根拠

ORDレコード
ord-a964d9c70a664d779c4d2d2571eaedb7
出典データセット
uspto-grants-2012_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08119676B2

反応ノート

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