Cesium carbonate → (S)-2-(1-((5H-chromeno[3,4-c]pyridin-8-yl)oxy)-4-methylpentan-2-yl)isoindoline-1,3-dione

HRID 870899노트

반응식

HRID 870899 반응식
Cl[C:2]1[CH:3]=[CH:4][C:5]2[C:15]3[C:10](=[CH:11][N:12]=[CH:13][CH:14]=3)[CH2:9][O:8][C:6]=2[CH:7]=1.[OH:16][CH2:17][C@@H:18]([N:23]1[C:31](=[O:32])[C:30]2[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=2)[C:24]1=[O:33])[CH2:19][CH:20]([CH3:22])[CH3:21].C(P(C(C)(C)C)C1C=CC=CC=1C1C(C(C)C)=CC(C(C)C)=CC=1C(C)C)(C)(C)C.C(=O)([O-])[O-].[Cs+].[Cs+]>C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH:14]1[CH:13]=[N:12][CH:11]=[C:10]2[CH2:9][O:8][C:6]3[CH:7]=[C:2]([O:16][CH2:17][C@@H:18]([N:23]4[C:24](=[O:33])[C:25]5[C:30](=[CH:29][CH:28]=[CH:27][CH:26]=5)[C:31]4=[O:32])[CH2:19][CH:20]([CH3:22])[CH3:21])[CH:3]=[CH:4][C:5]=3[C:15]=12

참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 11618717Di-tert-butyl(2',4',6'-tris(propan-2-yl)-(1,1'-biphenyl)-2-yl)phosphaneHCID 713789222-[(2S)-1-Hydroxy-4-methylpentan-2-yl]-1H-isoindole-1,3(2H)-dioneHCID 866958928-chloro-5H-chromeno[3,4-c]pyridine

생성물 1

HCID 86695893(S)-2-(1-((5H-chromeno[3,4-c]pyridin-8-yl)oxy)-4-methylpentan-2-yl)isoindoline-1,3-dione수율 101.7%

시약·촉매·용매 2

HCID 167845palladium(II) acetate촉매HCID 1140Toluene용매

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온도
80 °C

실험 절차

To a stirred suspension of 8-chloro-5H-chromeno[3,4-c]pyridine (1 g, 4.59 mmol), (S)-2-(1-hydroxy-4-methylpentan-2-yl)isoindoline-1,3-dione (3.43 g, 13.88 mmol), di-tert-butyl(2′,4′,6′-triisopropyl-[1,1′-biphenyl]-2-yl)phosphine (1.17 g, 2.76 mmol) and cesium carbonate (2.245 g, 6.89 mmol) in toluene (4 mL) was added palladium (II) acetate (0.309 g, 1.38 mmol). Nitrogen gas was bubbled through the mixture for 5 min, and then the mixture was heated at 80° C. for 14 h. The reaction was diluted with ethyl acetate (25 mL) and filtered through celite. The filtrate was washed with water (1×20 mL) and brine (1×20 mL), dried over sodium sulfate and concentrated under reduced pressure. The residue was purified via silica gel column chromatography (60% ethyl acetate in hexanes) to afford (5)-2-(1-((5H-chromeno[3,4-c]pyridin-8-yl)oxy)-4-methylpentan-2-yl)isoindoline-1,3-dione (2 g, 4.67 mmol, quantitative yield) as a semi solid. LCMS (ESI) m/e 429 [(M+H)+, calcd for C26H25N2O4 429.2].

후처리

  1. customNitrogen gas was bubbled through the mixture for 5 min
  2. additionThe reaction was diluted with ethyl acetate (25 mL)
  3. filtrationfiltered through celite
  4. washThe filtrate was washed with water (1×20 mL) and brine (1×20 mL)
  5. dry with materialdried over sodium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified via silica gel column chromatography (60% ethyl acetate in hexanes)

출처 및 근거

ORD 기록
ord-2d10fb7a7aeb4aa5afc0c321155b4b85
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08969564B2

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