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Tetrahydrofuran → 6-chloro-2-methyl-3-{1-[(4-methylphenyl)sulphonyl]-1H-pyrrolo[2,3-b]pyridin-4-yl}imidazo[1,2-b]pyridazine

HRID 1035788
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HRID 1035788 반응식
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8](I)=[C:9]([CH3:11])[N:10]=2)[N:7]=1.[CH3:13][C:14]1[CH:19]=[CH:18][C:17]([S:20]([N:23]2[C:27]3=[N:28][CH:29]=[CH:30][C:31](B4OC(C)(C)C(C)(C)O4)=[C:26]3[CH:25]=[CH:24]2)(=[O:22])=[O:21])=[CH:16][CH:15]=1.C(=O)([O-])[O-].[Cs+].[Cs+].O1CCCC1>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].O.ClCCl>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([C:31]3[CH:30]=[CH:29][N:28]=[C:27]4[N:23]([S:20]([C:17]5[CH:18]=[CH:19][C:14]([CH3:13])=[CH:15][CH:16]=5)(=[O:21])=[O:22])[CH:24]=[CH:25][C:26]=34)=[C:9]([CH3:11])[N:10]=2)[N:7]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

8

반응물 4

HCID 8028TetrahydrofuranHCID 10796Cesium carbonateHCID 469416436-Chloro-3-iodo-2-methylimidazo[1,2-b]pyridazineHCID 497589261-Tosyl-1H-pyrrolo(2,3-B)pyridine-4-boronic acid pinacol ester

생성물 1

HCID 580463686-chloro-2-methyl-3-{1-[(4-methylphenyl)sulphonyl]-1H-pyrrolo[2,3-b]pyridin-4-yl}imidazo[1,2-b]pyridazine수율 59.9%

시약·촉매·용매

3
HCID 44119782Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 962Water용매2회HCID 6344Dichloromethane용매

실험 절차

Added to a mixture, which has been previously degassed and is under argon, of 0.470 g (1.60 mmol) of 6-chloro-3-iodo-2-methylimidazo[1,2-b]pyridazine, 0.765 g (1.92 mmol) of 1-[(4-methylphenyl)sulphonyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (CAS 916176-50-6) and 1.56 g (4.80 mmol) of caesium carbonate in 10 ml of a mixture of tetrahydrofuran and water (9/1), is 0.12 g (0.14 mmol) of a complex of [1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloride and of dichloromethane. The mixture is heated under reflux for 18 hours, then poured into 100 ml of water. The product is extracted with dichloromethane. The organic phase is separated, dried over sodium sulphate and the solvent is removed by evaporation under reduced pressure. The chestnut brown solid obtained is then chromatographed over an aminopropyl-grafted silica gel column (SiNH2; 30 g) by eluting with a mixture of dichloromethane and petroleum ether (70/30) in order to give 0.42 g of 6-chloro-2-methyl-3-{1-[(4-methylphenyl)sulphonyl]-1H-pyrrolo[2,3-b]pyridin-4-yl}imidazo[1,2-b]pyridazine in the form of a white powder.

후처리

  1. additionAdded to a mixture, which
  2. customhas been previously degassed
  3. temperatureThe mixture is heated
  4. temperatureunder reflux for 18 hours
  5. extractionThe product is extracted with dichloromethane
  6. customThe organic phase is separated
  7. dry with materialdried over sodium sulphate
  8. customthe solvent is removed by evaporation under reduced pressure
  9. customThe chestnut brown solid obtained
  10. customis then chromatographed over an aminopropyl-grafted silica gel column (SiNH2; 30 g)
  11. washby eluting with a mixture of dichloromethane and petroleum ether (70/30) in order

출처 및 근거

ORD 기록
ord-53dbd43ee27e4519a2027948c792ee72
출처 데이터셋
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08546395B2

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