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Ethanol → tert-Butyl (3R,5S)-3-(hydroxymethyl)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl)(2-methylpropyl)amino]piperidine-1-carboxylate

HRID 1184108
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HRID 1184108 반응식
[BH4-].[Na+].C(O)C.[Cl-].[Ca+2].[Cl-].[CH3:9][O:10][CH2:11][CH2:12][CH2:13][CH2:14][N:15]1[C:19]2[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=2[N:17]=[C:16]1[C:24]([N:26]([CH2:44][CH:45]([CH3:47])[CH3:46])[C@@H:27]1[CH2:32][N:31]([C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])[CH2:30][C@H:29]([C:40](OC)=[O:41])[CH2:28]1)=[O:25]>C1COCC1.O.C(OCC)(=O)C>[OH:41][CH2:40][C@@H:29]1[CH2:28][C@H:27]([N:26]([C:24]([C:16]2[N:15]([CH2:14][CH2:13][CH2:12][CH2:11][O:10][CH3:9])[C:19]3[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=3[N:17]=2)=[O:25])[CH2:44][CH:45]([CH3:47])[CH3:46])[CH2:32][N:31]([C:33]([O:35][C:36]([CH3:38])([CH3:37])[CH3:39])=[O:34])[CH2:30]1
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참가 물질

8

반응물 4

HCID 702EthanolHCID 4311764Sodium borohydrideHCID 5284359Calcium ChlorideHCID 583555501-tert-Butyl 3-methyl(3R,5S)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-1,3-dicarboxylate

생성물 1

HCID 58355672tert-Butyl (3R,5S)-3-(hydroxymethyl)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl)(2-methylpropyl)amino]piperidine-1-carboxylate
수율 47.4%

시약·촉매·용매 3

HCID 962Water용매HCID 8028Tetrahydrofuran용매2회HCID 8857Ethyl Acetate용매

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온도
0 °C

실험 절차

Sodium borohydride (4.45 g) was suspended in THF (25 ml)-ethanol (75 ml), and calcium chloride (6.5 g) was added. After stirring at 0° C. for 1 hr, a solution of 1-tert-butyl 3-methyl (3R,5S)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-1,3-dicarboxylate (4.0 g) in THF (50 ml) was added. After stirring at room temperature for 12 hr, ethyl acetate (150 ml) and water (50 ml) were slowly added in this order, and the mixture was filtered. The organic layer of the filtrate was partitioned, washed with brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was dried under reduced pressure to give the object product (1.8 g).

후처리

  1. additionwas added
  2. stirringAfter stirring at room temperature for 12 hr
  3. filtrationthe mixture was filtered
  4. customThe organic layer of the filtrate was partitioned
  5. washwashed with brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. customThe solvent was evaporated under reduced pressure
  8. customThe residue was dried under reduced pressure

출처 및 근거

ORD 기록
ord-c0634a9778b14e1cb22b7c671185e234
출처 데이터셋
uspto-grants-2014_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08664380B2

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