Indole-3-acetamide → 3-[6-[tert-butylsilyloxy(diphenyl)methyl]-2-methylimidazo[1,2-a]pyrazin-3-yl]-4-(1H-indol-3-yl)pyrrole-2,5-dione

HRID 402879

反応式

HRID 402879 の反応式
CC(C)([O-])C.[K+].[NH:7]1[C:15]2[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=2)[C:9]([CH2:16][C:17]([NH2:19])=[O:18])=[CH:8]1.C([O:22][C:23](=O)[C:24]([C:26]1[N:30]2[CH:31]=[C:32]([C:35]([C:48]3[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=3)([C:42]3[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=3)[O:36][SiH2:37][C:38]([CH3:41])([CH3:40])[CH3:39])[N:33]=[CH:34][C:29]2=[N:28][C:27]=1[CH3:54])=O)C.[NH4+].[Cl-].C1CCN2C(=NCCC2)CC1>O1CCCC1.CCOC(C)=O.O>[C:38]([SiH2:37][O:36][C:35]([C:42]1[CH:43]=[CH:44][CH:45]=[CH:46][CH:47]=1)([C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1)[C:32]1[N:33]=[CH:34][C:29]2[N:30]([C:26]([C:24]3[C:23](=[O:22])[NH:19][C:17](=[O:18])[C:16]=3[C:9]3[C:10]4[C:15](=[CH:14][CH:13]=[CH:12][CH:11]=4)[NH:7][CH:8]=3)=[C:27]([CH3:54])[N:28]=2)[CH:31]=1)([CH3:41])([CH3:39])[CH3:40]

参加物

9

反応物 5

HCID 397Indole-3-acetamideHCID 25517Ammonium ChlorideHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 23665647Potassium tert-butoxideHCID 131729752[6-(Tert-butyl-diphenyl-silanyloxymethyl)-2-methyl-imidazo[1,2-a]pyrazin-3-yl]-oxo-acetic acid ethyl ester

生成物 1

HCID 1540901423-[6-[tert-butylsilyloxy(diphenyl)methyl]-2-methylimidazo[1,2-a]pyrazin-3-yl]-4-(1H-indol-3-yl)pyrrole-2,5-dione

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

実験手順

Potassium tert-butoxide (1.0 M in THF, 0.86 ml, 0.86 mmol, 3.0 equiv) is added dropwise at room temperature under an atmosphere of argon to a solution of 2-(1H-indol-3-yl)-acetamide (50 mg, 0.29 mmol, 1.0 equiv) and of [6-(tert-butyl-diphenyl-silanyloxymethyl)-2-methyl-imidazo[1,2-a]pyrazin-3-yl]-oxo-acetic acid ethyl ester (158 mg, 0.32 mmol, 1.0 equiv) in anhydrous tetrahydrofuran (1.0 ml, dried over molecular sieves). The reaction mixture is stirred for 15 minutes at room temperature. It is then diluted with EtOAc and poured into a saturated aqueous NH4Cl solution. After three extractions with EtOAc, the combined organic layers are dried over Na2SO4, filtered and concentrated in vacuo. The residue is dissolved in N,N-dimethylformamide (1.0 ml), treated with DBU (0.43 ml, 2.9 mmol, 10 equiv) and stirred under an atmosphere of argon for 5 minutes at 110° C. After cooling, the reaction mixture is diluted with water and extracted three times with EtOAc. The combined organic layers are washed with brine, dried over Na2SO4, filtered and concentrated in vacuo.

後処理

  1. extractionAfter three extractions with EtOAc
  2. dry with materialthe combined organic layers are dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. dissolutionThe residue is dissolved in N,N-dimethylformamide (1.0 ml)
  6. stirringstirred under an atmosphere of argon for 5 minutes at 110° C
  7. temperatureAfter cooling
  8. extractionextracted three times with EtOAc
  9. washThe combined organic layers are washed with brine
  10. dry with materialdried over Na2SO4
  11. filtrationfiltered
  12. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-dfa6120415144f6ea5d8e4e66450c801
出典データセット
uspto-grants-2014_06
特許番号
US08742132B2

関連ノート

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