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Triethylamine → Methyl cis(+/-)-(4-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-3-ethoxypiperidin-1-yl)(oxo)acetate

HRID 43719
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HRID 43719 반응식
Cl.[Cl:2][C:3]1[N:4]=[C:5]([C:10]([NH:12][C@H:13]2[CH2:18][CH2:17][NH:16][CH2:15][C@H:14]2[O:19][CH2:20][CH3:21])=[O:11])[NH:6][C:7]=1[CH2:8][CH3:9].Cl[C:23](=[O:28])[C:24]([O:26][CH3:27])=[O:25].C(N(CC)CC)C>ClCCl.CN(C1C=CN=CC=1)C.C(OCC)(=O)C>[Cl:2][C:3]1[N:4]=[C:5]([C:10]([NH:12][C@H:13]2[CH2:18][CH2:17][N:16]([C:23](=[O:28])[C:24]([O:26][CH3:27])=[O:25])[CH2:15][C@H:14]2[O:19][CH2:20][CH3:21])=[O:11])[NH:6][C:7]=1[CH2:8][CH3:9]
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참가 물질

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반응물 3

HCID 8471TriethylamineHCID 79846Methyl chloroglyoxylateHCID 86648665cis(+/-)-4-Chloro-N-(3-ethoxypiperidin-4-yl)-5-ethyl-1H-imidazole-2-carboxamide hydrochloride

생성물 1

HCID 86648668Methyl cis(+/-)-(4-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-3-ethoxypiperidin-1-yl)(oxo)acetate수율 90.7%

시약·촉매·용매 3

HCID 14284
4-(Dimethylamino)pyridine
촉매
HCID 6344Dichloromethane용매
HCID 8857Ethyl Acetate용매

실험 절차

cis(±)-4-Chloro-N-(3-ethoxypiperidin-4-yl)-5-ethyl-1H-imidazole-2-carboxamide hydrochloride obtained in Example (131a) (200 mg, 0.593 mmol) was suspended in dichloromethane (5 mL). Methyl chloroglyoxylate (0.070 mL, 0.76 mmol), triethylamine (0.250 mL, 1.80 mmol) and DMAP (catalytic amount) were added under ice-cooling, and the mixture was stirred at room temperature for one hour. The reaction solution was diluted with ethyl acetate, washed with water and brine, and dried over anhydrous sodium sulfate. Following concentration under reduced pressure, the residue was purified by silica gel column chromatography (elution solvent: hexane/ethyl acetate=7/3→1/0) to obtain 208.1 mg of the title compound as a colorless oily substance (91%).

후처리

  1. temperaturecooling
  2. washwashed with water and brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentration under reduced pressure
  5. customthe residue was purified by silica gel column chromatography (elution solvent: hexane/ethyl acetate=7/3→1/0)

출처 및 근거

ORD 기록
ord-563fa248f14749d2b203dfb969b42586
출처 데이터셋
uspto-grants-2013_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08536197B2

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