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1-Acetoxy-2-bromoethane → 1-[1-(1-methoxycarbonylpiperidin-4-yl)-piperidin-4-yl]-3-(2-acetoxy-ethyl)-1,3-dihydro-2H-benzimidazol-2-one

HRID 47529
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HRID 47529 반응식
[CH3:1][O:2][C:3]([N:5]1[CH2:10][CH2:9][CH:8]([N:11]2[CH2:16][CH2:15][CH:14]([N:17]3[C:21]4[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=4[NH:19][C:18]3=[O:26])[CH2:13][CH2:12]2)[CH2:7][CH2:6]1)=[O:4].[H-].[Na+].Br[CH2:30][CH2:31][O:32][C:33](=[O:35])[CH3:34]>O1CCCC1>[CH3:1][O:2][C:3]([N:5]1[CH2:10][CH2:9][CH:8]([N:11]2[CH2:16][CH2:15][CH:14]([N:17]3[C:21]4[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=4[N:19]([CH2:30][CH2:31][O:32][C:33](=[O:35])[CH3:34])[C:18]3=[O:26])[CH2:13][CH2:12]2)[CH2:7][CH2:6]1)=[O:4]
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참가 물질

5

반응물 3

HCID 135641-Acetoxy-2-bromoethaneHCID 24758Sodium hydrideHCID 227452181-[1-(1-methoxycarbonylpiperidin-4-yl)piperidin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one

생성물 1

HCID 227452431-[1-(1-methoxycarbonylpiperidin-4-yl)-piperidin-4-yl]-3-(2-acetoxy-ethyl)-1,3-dihydro-2H-benzimidazol-2-one

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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온도
40 °C

실험 절차

Three-hundred (300) mg of 1-[1-(1-methoxycarbonylpiperidin-4-yl)piperidin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one was dissolved in 15 ml of tetrahydrofuran, and to which 33 mg of 60% sodium hydride was added. After evolution of a gas ceased, 93 μl of (2-bromoethyl)acetate was added, heated to 40° C. and stirred for 2 hours. The reaction liquid was concentrated and the remaining matter was distributed between water and chloroform. The chloroform layer was separated, dried over anhydrous sodium sulfate, concentrated and the residue was purified by silica gel column chromatography (chloroform/methanol=19/1). Thus 354 mg of 1-[1-(1-methoxycarbonylpiperidin-4-yl)-piperidin-4-yl]-3-(2-acetoxy-ethyl)-1,3-dihydro-2H-benzimidazol-2-one was obtained. The product was dissolved in 10 ml of methanol, to which 35 mg of sodium borohydride was added and stirred for 7 hours at room temperature. The reaction liquid was concentrated, to which water was added and extracted with chloroform. The chloroform layer was dried over anhydrous sodium sulfate and then concentrated. The residue was purified by silica gel column chromatography (chloroform/methanol=19/1), to provide 246 mg of the title compound as a colorless, amorphous substance.

후처리

  1. customThe reaction liquid
  2. concentrationwas concentrated
  3. customThe chloroform layer was separated
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated
  6. customthe residue was purified by silica gel column chromatography (chloroform/methanol=19/1)

출처 및 근거

ORD 기록
ord-e8d4d9656f5d4a12bcb5a503bca60382
출처 데이터셋
uspto-grants-2004_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06699880B1

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