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Cesium carbonate → 5-(5-(4-Methoxyphenyl)-4-(1-methylpiperidin-4-ylamino)pyridin-2-ylamino)pyrazine-2-carbonitrile

HRID 384688
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HRID 384688 반응식
[NH2:1][C:2]1[CH:7]=[C:6]([NH:8][CH:9]2[CH2:14][CH2:13][N:12]([C:15](OC(C)(C)C)=O)[CH2:11][CH2:10]2)[C:5]([C:22]2[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[CH:24][CH:23]=2)=[CH:4][N:3]=1.Br[C:31]1[N:32]=[CH:33][C:34]([C:37]#[N:38])=[N:35][CH:36]=1.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].COCCOC>[CH3:29][O:28][C:25]1[CH:26]=[CH:27][C:22]([C:5]2[C:6]([NH:8][CH:9]3[CH2:14][CH2:13][N:12]([CH3:15])[CH2:11][CH2:10]3)=[CH:7][C:2]([NH:1][C:31]3[N:32]=[CH:33][C:34]([C:37]#[N:38])=[N:35][CH:36]=3)=[N:3][CH:4]=2)=[CH:23][CH:24]=1
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참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 378187222-Bromo-5-cyanopyrazineHCID 59613346Tert-butyl 4-(2-amino-5-(4-methoxyphenyl)pyridin-4-ylamino)piperidine-1-carboxylate

생성물 1

HCID 596134065-(5-(4-Methoxyphenyl)-4-(1-methylpiperidin-4-ylamino)pyridin-2-ylamino)pyrazine-2-carbonitrile
수율 20%

시약·촉매·용매 2

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 80711,2-Dimethoxyethane용매

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온도
100 °C

실험 절차

Dry DME (402 μL) was added to a mixture of tert-butyl 4-(2-amino-5-(4-methoxyphenyl)pyridin-4-ylamino)piperidine-1-carboxylate (16 mg, 0.040 mmol), 5-bromopyrazine-2-carbonitrile (7.39 mg, 0.040 mmol), xantphos (1.859 mg, 3.21 μmol), tris(dibenzylideneacetone)dipalladium(0) (1.471 mg, 1.606 μmol), and cesium carbonate (26.2 mg, 0.080 mmol) in a nitrogen purged, sealed microwave vial. Nitrogen gas was bubbled through the mixture for 5 min. The reaction mixture was heated for 1 hr at 100° C. by microwave irradiation. Upon cooling the mixture was diluted with MeOH and purified by ion exchange on Isolute SCX II acidic resin (5 g), eluting with MeOH. The eluent was concentrated and further purified by preparative thin layer chromatography, eluting with 7% MeOH, 1% NH3, 92% DCM, to give 5-(5-(4-methoxyphenyl)-4-(1-methylpiperidin-4-ylamino)pyridin-2-ylamino)pyrazine-2-carbonitrile (4 mg, 7.97 μmol, 20% yield) as a light yellow powder.

후처리

  1. custompurged
  2. customsealed microwave vial
  3. customNitrogen gas was bubbled through the mixture for 5 min
  4. temperatureUpon cooling the mixture
  5. additionwas diluted with MeOH
  6. custompurified by ion exchange on Isolute SCX II acidic resin (5 g)
  7. washeluting with MeOH
  8. concentrationThe eluent was concentrated
  9. customfurther purified by preparative thin layer chromatography
  10. washeluting with 7% MeOH, 1% NH3, 92% DCM

출처 및 근거

ORD 기록
ord-7d949b9440744e959f26476f7d2f7448
출처 데이터셋
uspto-grants-2013_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08367658B2

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