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

HRID 2369500노트

반응식

HRID 2369500 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)[CH:9]([CH:16]=[CH2:17])[O:8][C:6]=2[CH:7]=1.[OH:18][CH2:19][C@@H:20]([N:25]1[C:33](=[O:34])[C:32]2[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=2)[C:26]1=[O:35])[CH2:21][CH:22]([CH3:24])[CH3:23].C(P(C(C)(C)C)C1(C(C)C)CC(C(C)C)=CC(C(C)C)=C1C1C=CC=CC=1)(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>[CH3:23][CH:22]([CH3:24])[CH2:21][C@H:20]([N:25]1[C:26](=[O:35])[C:27]2[C:32](=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:33]1=[O:34])[CH2:19][O:18][C:2]1[CH:3]=[CH:4][C:5]2[C:15]3[C:10](=[CH:11][N:12]=[CH:13][CH:14]=3)[CH:9]([CH:16]=[CH2:17])[O:8][C:6]=2[CH:7]=1

참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 668498352-DI-Tert-Butylphosphino-2,4,6-TriisopropylbiphenylHCID 713789222-[(2S)-1-Hydroxy-4-methylpentan-2-yl]-1H-isoindole-1,3(2H)-dioneHCID 866959038-chloro-5-vinyl-5H-chromeno[3,4-c]pyridine

생성물 1

HCID 866959042-((2S)-4-methyl-1-((5-vinyl-5H-chromeno[3,4-c]pyridin-8-yl)oxy)pentan-2-yl)isoindoline-1,3-dione수율 80.4%

시약·촉매·용매 2

HCID 167845palladium(II) acetate촉매HCID 1140Toluene용매

반응 조건

온도
80 °C

실험 절차

To a stirred suspension of 8-chloro-5-vinyl-5H-chromeno[3,4-c]pyridine (0.2 g, 0.821 mmol), (S)-2-(1-hydroxy-4-methylpentan-2-yl)isoindoline-1,3-dione (0.609 g, 2.462 mmol), 2-di-tert-butylphosphino-2,4,6-triisopropylbiphenyl (0.209 g, 0.492 mmol), and cesium carbonate (0.401 g, 1.231 mmol) in toluene (25 mL) was added palladium (II) acetate (0.055 g, 0.246 mmol). Nitrogen gas was bubbled through the mixture for 5 min, and then the reaction mixture was heated to 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 2-((2S)-4-methyl-1-(5-vinyl-5H-chromeno[3,4-c]pyridin-8-yloxy)pentan-2-yl)isoindoline-1,3-dione (0.3 g, 0.660 mmol, 40% yield for three steps). LCMS (ESI) m/e 455.2 [(M+H)+, calcd for C28H27N2O4 455.2]; LC/MS retention time (Method C): tR=2.16 min.

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-c92552f3140148438a479c57572d3b2a
출처 데이터셋
uspto-grants-2014_04
특허 번호
US08703953B2

반응 노트

불러오는 중…