Cesium carbonate → 2-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-5-fluorobenzonitrile

HRID 1472584노트

반응식

HRID 1472584 반응식
Cl[C:2]1[CH:7]=[C:6]([NH:8][C:9]2[CH:16]=[CH:15][C:14]([F:17])=[CH:13][C:10]=2[C:11]#[N:12])[C:5]([Cl:18])=[CH:4][N:3]=1.[CH3:19][C:20]1[CH:24]=[C:23]([NH2:25])[N:22]([CH:26]([CH3:28])[CH3:27])[N:21]=1.C(=O)([O-])[O-].[Cs+].[Cs+].C1C=CC(P(C2C(OC3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=CC=3)=CC=CC=2)C2C=CC=CC=2)=CC=1>O1CCOCC1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[Cl:18][C:5]1[C:6]([NH:8][C:9]2[CH:16]=[CH:15][C:14]([F:17])=[CH:13][C:10]=2[C:11]#[N:12])=[CH:7][C:2]([NH:25][C:23]2[N:22]([CH:26]([CH3:28])[CH3:27])[N:21]=[C:20]([CH3:19])[CH:24]=2)=[N:3][CH:4]=1

참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 1210181-Isopropyl-3-methyl-1H-pyrazol-5-amineHCID 4285986Bis[2-(diphenylphosphino)phenyl] etherHCID 575169182-[(2,5-Dichloro-4-pyridinyl)amino]-5-fluorobenzonitrile

생성물 1

HCID 667695842-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-5-fluorobenzonitrile수율 12.8%

시약·촉매·용매 2

HCID 167845palladium(II) acetate촉매HCID 312751,4-Dioxane용매

실험 절차

To a solution of 2-[(2,5-dichloro-4-pyridinyl)amino]-5-fluorobenzonitrile (7.09 g, 25.1 mmol) and 3-methyl-1-(1-methylethyl)-1H-pyrazol-5-amine (3.5 g, 25.1 mmol) in 1,4-dioxane (100 mL) was added cesium carbonate (24.58 g, 75 mmol) and the reaction mixture was degassed. DPEPhos (1.083 g, 2.012 mmol) was added followed by palladium acetate (0.226 g, 1.006 mmol) and the reaction mixture was heated to reflux overnight. The suspension was then filtered. The dioxane was evaporated off. The solid was purified by flash column chromatography on silica gel (10% DCM: EtOAC). Fractions were collected and evaporated. The yellow oil was dissolved in diethyl ether, sonicated and filtered. 2-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-5-fluorobenzonitrile (1.3 g, 3.21 mmol, 12.76% yield) was isolated as a white solid; 1H NMR (400 MHz, METHANOL-d4) ppm 1.35 (d, J=6.82 Hz, 6 H) 2.20 (s, 3 H) 4.43 (quin, J=6.69 Hz, 1 H) 5.82 (s, 1 H) 5.89 (s, 1 H) 7.47-7.57 (m, 2 H) 7.61-7.74 (m, 1 H) 7.88 (s, 1 H); HPLC Rt=2.40 min, MS (ESI): 385.2 [M+H]+.

후처리

  1. customthe reaction mixture was degassed
  2. temperaturethe reaction mixture was heated
  3. temperatureto reflux overnight
  4. filtrationThe suspension was then filtered
  5. customThe dioxane was evaporated off
  6. customThe solid was purified by flash column chromatography on silica gel (10% DCM: EtOAC)
  7. customFractions were collected
  8. customevaporated
  9. dissolutionThe yellow oil was dissolved in diethyl ether
  10. customsonicated
  11. filtrationfiltered

출처 및 근거

ORD 기록
ord-475afb9a1b41435cab34aa5891f22f60
출처 데이터셋
uspto-grants-2015_04
특허 번호
US09012479B2

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