Triphenylphosphine → tert-butyl 4-({(2S)-2-[(2,5-dichloropyridin-3-yl)oxy]propanoyl}amino)piperidine-1-carboxylate

HRID 1026543노트

반응식

HRID 1026543 반응식
[OH:1][C@H:2]([CH3:19])[C:3]([NH:5][CH:6]1[CH2:11][CH2:10][N:9]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:8][CH2:7]1)=[O:4].[Cl:20][C:21]1[C:26](O)=[CH:25][C:24]([Cl:28])=[CH:23][N:22]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)(C)C)=O)=NC(OC(C)(C)C)=O>O.O1CCCC1>[Cl:20][C:21]1[C:26]([O:1][C@@H:2]([CH3:19])[C:3]([NH:5][CH:6]2[CH2:11][CH2:10][N:9]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:8][CH2:7]2)=[O:4])=[CH:25][C:24]([Cl:28])=[CH:23][N:22]=1

참가 물질

7

반응물 4

HCID 11776TriphenylphosphineHCID 97268Di-tert-butyl azodicarboxylateHCID 98989172,5-Dichloropyridin-3-OlHCID 68500407tert-butyl 4-{[(2R)-2-hydroxypropanoyl]amino}piperidine-1-carboxylate

생성물 1

HCID 86671388tert-butyl 4-({(2S)-2-[(2,5-dichloropyridin-3-yl)oxy]propanoyl}amino)piperidine-1-carboxylate수율 81.2%

시약·촉매·용매 2

HCID 962Water용매HCID 8028Tetrahydrofuran용매2회

실험 절차

To a tetrahydrofuran solution (148 ml) of tert-butyl 4-{[(2R)-2-hydroxypropanoyl]amino}piperidine-1-carboxylate (5.13 g), 2,5-dichloropyridin-3-ol (3.40 g) and triphenylphosphine (6.41 g) was added dropwise at room temperature a tetrahydrofuran solution (40 ml) of di-tert-butyl azodicarboxylate (5.63 g) over 10 minutes. The reaction solution was stirred at room temperature for 1 hour, then poured into water, and extracted with ethyl acetate. The organic layer was washed sequentially with water and saturated sodium chloride solution, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography to afford tert-butyl 4-({(2S)-2-[(2,5-dichloropyridin-3-yl)oxy]propanoyl}amino)piperidine-1-carboxylate (6.40 g).

후처리

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed sequentially with water and saturated sodium chloride solution
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-8031a6ef764b43deae64f70a2479ef62
출처 데이터셋
uspto-grants-2014_05
특허 번호
US08729095B2

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