Cesium carbonate → 4-Chloro-2-(1-oxo-5,6,7,8-tetrahydro-1H-pyrrolo[3,4-b]indolizin-2(3H)-yl)nicotinaldehyde

HRID 1022028노트

반응식

HRID 1022028 반응식
[C:1]1(=[O:13])[C:5]2[CH:6]=[C:7]3[N:12]([C:4]=2[CH2:3][NH:2]1)[CH2:11][CH2:10][CH2:9][CH2:8]3.Br[C:15]1[N:22]=[CH:21][CH:20]=[C:19]([Cl:23])[C:16]=1[CH:17]=[O:18].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C([O-])([O-])=O.[Cs+].[Cs+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O1CCOCC1>[Cl:23][C:19]1[C:16]([CH:17]=[O:18])=[C:15]([N:2]2[CH2:3][C:4]3[N:12]4[C:7]([CH2:8][CH2:9][CH2:10][CH2:11]4)=[CH:6][C:5]=3[C:1]2=[O:13])[N:22]=[CH:21][CH:20]=1

참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 866839142-Bromo-4-chloropyridine-3-carbaldehydeHCID 866844512,3,5,6,7,8-Hexahydro-1H-pyrrolo[3,4-b]indolizin-1-one

생성물 1

HCID 866844524-Chloro-2-(1-oxo-5,6,7,8-tetrahydro-1H-pyrrolo[3,4-b]indolizin-2(3H)-yl)nicotinaldehyde수율 42%

시약·촉매·용매 2

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 312751,4-Dioxane용매

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온도
90 °C

실험 절차

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 238d (400 mg, 2.27 mmol), 2-bromo-4-chloronicotinaldehyde (1.50 g, 6.90 mmol, 3.0 eq.), Pd2(dba)3 (208 mg, 0.227 mmol, 0.1 eq.), xantphos (131 mg, 0.227 mmol, 0.1 eq.), Cs2CO3 (1.50 g, 4.54 mmol, 2.0 eq.), and dioxane (30 mL). After bubbling nitrogen through the resulting mixture for 30 minutes, the reaction mixture was stirred at 90° C. for 16 h. After the reaction was complete, the mixture was cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the residual was purified by silica-gel column chromatography eluting with 1:3 ethyl acetate/petroleum ether to afford 238e (300 mg, 42%) as a light yellow solid. MS-ESI: [M+H]+ 316.1.

후처리

  1. customA 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customAfter bubbling nitrogen through the resulting mixture for 30 minutes
  3. temperaturethe mixture was cooled to room temperature
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under reduced pressure
  6. customthe residual was purified by silica-gel column chromatography
  7. washeluting with 1:3 ethyl acetate/petroleum ether

출처 및 근거

ORD 기록
ord-01cde6e342fc49ef92b5e150b38fd652
출처 데이터셋
uspto-grants-2014_05
특허 번호
US08716274B2

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