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Oxalic Acid → 8,9-dihydro-7-[(hydroxy)(1-trityl-1H-imidazol-2-yl)methyl]-10-methylpyrido[1,2-a]indol-6(7H)-one

HRID 847502
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HRID 847502 반응식
C(NC(C)C)(C)C.C([Li])CCC.[CH3:13][C:14]1[C:22]2[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=2)[N:16]2[C:23](=[O:27])[CH2:24][CH2:25][CH2:26][C:15]=12.[C:28]([N:47]1[CH:51]=[CH:50][N:49]=[C:48]1[CH:52]=[O:53])([C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1)([C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1)[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1.C(O)(=O)C(O)=O>O1CCCC1.CCCCCC.O>[OH:53][CH:52]([C:48]1[N:47]([C:28]([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)([C:35]2[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=2)[C:41]2[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=2)[CH:51]=[CH:50][N:49]=1)[CH:24]1[C:23](=[O:27])[N:16]2[C:17]3[C:22]([C:14]([CH3:13])=[C:15]2[CH2:26][CH2:25]1)=[CH:21][CH:20]=[CH:19][CH:18]=3
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

9

반응물 5

HCID 971Oxalic AcidHCID 7912DiisopropylamineHCID 6182531-(triphenylmethyl)-1H-imidazole-2-carbaldehydeHCID 1107438710-methyl-8,9-dihydropyrido[1,2-a]indol-6(7H)-oneHCID 178418339Butyllithium

생성물 1

HCID 150519308,9-dihydro-7-[(hydroxy)(1-trityl-1H-imidazol-2-yl)methyl]-10-methylpyrido[1,2-a]indol-6(7H)-one
수율 68.9%

시약·촉매·용매 3

HCID 962Water용매HCID 8028Tetrahydrofuran용매3회HCID 8058Hexane용매

실험 절차

To a solution of diisopropylamine (557 mg) in tetrahydrofuran (15 ml) at -70° C. under a nitrogen atmosphere was added 1.64M butyllithium in hexane (3.35 ml). After being stirred at the same temperature for 20 minutes, the mixture was treated with a solution of 8,9-dihydro-10-methylpyrido[1,2-a]indol-6(7H)-one (995 mg) in tetrahydrofuran (10 ml) over 15 minutes. The mixture was stirred at -70° C. for 30 minutes, and a solution of 1-trityl-1H-imidazole-2-carbaldehyde (1.69 g) in tetrahydrofuran (20 ml) was added dropwise over 10 minutes. After the mixture was stirred at -70° C. for further 70 minutes, it was diluted with chilled water, neutralized with an aqueous solution of oxalic acid, and extracted with chloroform. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and evaporated in vacuo. Purification of the residue with silica gel column chromatography (20% ethyl acetate-chloroform) gave 8,9-dihydro-7-[(hydroxy)-(1-trityl-1H-imidazol-2-yl)methyl]-10-methylpyrido-[1,2-a]indol-6(7H)-one (1.85 g)

후처리

  1. stirringThe mixture was stirred at -70° C. for 30 minutes
  2. stirringAfter the mixture was stirred at -70° C. for further 70 minutes
  3. extractionextracted with chloroform
  4. washThe organic layer was washed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customevaporated in vacuo
  7. customPurification of the residue with silica gel column chromatography (20% ethyl acetate-chloroform)

출처 및 근거

ORD 기록
ord-74ca939ca0d9410080d4d85fe931b457
출처 데이터셋
uspto-grants-1992_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05141945

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