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tert-Butyl 4-formylpiperidine-1-carboxylate → (S)-N-[2-(2,3-dihydrobenzofuran-5-yl)-1-methylethyl]-N-ethyl-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]amine

HRID 429824
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인쇄 미리보기

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HRID 429824 반응식
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH2:10][C@@H:11]([NH:13][CH2:14][CH3:15])[CH3:12])=[CH:9][C:4]=2[CH2:3][CH2:2]1.[C:16]([O:20][C:21]([N:23]1[CH2:28][CH2:27][CH:26]([CH:29]=O)[CH2:25][CH2:24]1)=[O:22])([CH3:19])([CH3:18])[CH3:17].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClC(Cl)C>[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH2:10][C@@H:11]([N:13]([CH2:29][CH:26]3[CH2:27][CH2:28][N:23]([C:21]([O:20][C:16]([CH3:17])([CH3:19])[CH3:18])=[O:22])[CH2:24][CH2:25]3)[CH2:14][CH3:15])[CH3:12])=[CH:9][C:4]=2[CH2:3][CH2:2]1
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참가 물질

5

반응물 3

HCID 1514430tert-Butyl 4-formylpiperidine-1-carboxylateHCID 5049666Sodium triacetoxyborohydrideHCID 11106515(S)-N-[2-(2,3-dihydrobenzofuran-5-yl)-1-methylethyl]ethylamine

생성물 1

HCID 54410775(S)-N-[2-(2,3-dihydrobenzofuran-5-yl)-1-methylethyl]-N-ethyl-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]amine수율 82%

시약·촉매·용매 1

HCID 6365
1,1-Dichloroethane
용매

실험 절차

To a solution of (S)-N-[2-(2,3-dihydrobenzofuran-5-yl)-1-methylethyl]ethylamine (2.38 grams, 11.6 mmol) and 1-(tert-butoxycarbonyl)piperidine-4-carboxaldehyde (2.47 grams, 11.6 mmol) in dichloroethane (20 ml) was added sodium triacetoxyborohydride (3.67 grams,17.4 mmole). The reaction mixture was stirred for 16 hours at room temperature. The solvent was removed under reduced pressure and the residue was partitioned between dichloromethane and saturated sodium bicarbonate solution. The organic layer was washed with water, dried over potassium carbonate and concentrated under reduced pressure to leave a residue, which was purified by flash chromatography on silica gel using 30% ethyl acetate in hexane. Appropriate fractions were combined and concentrated to give (S)-N-[2-(2,3-dihydrobenzofuran-5-yl)-1-methylethyl]-N-ethyl-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]amine as a oil (3.78 g, 82%), M+H 403.

후처리

  1. customThe solvent was removed under reduced pressure
  2. customthe residue was partitioned between dichloromethane and saturated sodium bicarbonate solution
  3. washThe organic layer was washed with water
  4. dry with materialdried over potassium carbonate
  5. concentrationconcentrated under reduced pressure
  6. customto leave a residue, which
  7. customwas purified by flash chromatography on silica gel using 30% ethyl acetate in hexane
  8. concentrationconcentrated

출처 및 근거

ORD 기록
ord-a91d7d497a014bb0ad40f5ff789587b3
출처 데이터셋
uspto-grants-2001_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06319920B1

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