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Potassium Carbonate → N-(5-(6-(4-cyano-2-(trifluoromethyl)phenyl)imidazo[1,2-b]pyridazin-2-yl)-2-methylphenyl)pivalamide

HRID 539799
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HRID 539799 반응식
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]=[C:10]3[CH:15]=[CH:14][C:13](B(O)O)=[N:12][N:11]3[CH:19]=2)=[CH:4][C:3]=1[NH:20][C:21](=[O:26])[C:22]([CH3:25])([CH3:24])[CH3:23].Br[C:28]1[CH:35]=[CH:34][C:31]([C:32]#[N:33])=[CH:30][C:29]=1[C:36]([F:39])([F:38])[F:37].C([O-])([O-])=O.[K+].[K+].C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=CC=2OC)CCCCC1>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(O)(C)C.O>[C:32]([C:31]1[CH:34]=[CH:35][C:28]([C:13]2[CH:14]=[CH:15][C:10]3[N:11]([CH:19]=[C:8]([C:5]4[CH:6]=[CH:7][C:2]([CH3:1])=[C:3]([NH:20][C:21](=[O:26])[C:22]([CH3:25])([CH3:24])[CH3:23])[CH:4]=4)[N:9]=3)[N:12]=2)=[C:29]([C:36]([F:37])([F:38])[F:39])[CH:30]=1)#[N:33]
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참가 물질

7

반응물 4

HCID 11430Potassium CarbonateHCID 108006474-Bromo-3-(trifluoromethyl)benzonitrileHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 680891592-(4-Methyl-3-pivalamidophenyl)imidazo[1,2-b]pyridazin-6-ylboronic acid

생성물 1

HCID 57406897N-(5-(6-(4-cyano-2-(trifluoromethyl)phenyl)imidazo[1,2-b]pyridazin-2-yl)-2-methylphenyl)pivalamide
수율 48.3%

시약·촉매·용매 2

HCID 167845palladium(II) acetate촉매HCID 21889133Propan-2-ol--water (1/1)용매

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온도
90 °C

실험 절차

A 200 mL flask is charged with 2-(4-methyl-3-pivalamidophenyl)imidazo[1,2-b]pyridazin-6-ylboronic acid (11.4 g, 0.0325 mol), 4-bromo-3-(trifluoromethyl)benzonitrile (10.16 g, 0.04 mol), K2CO3 (8.98 g, 0.065 mol), palladium acetate (0.510 g, 2.28 mmol), 2-dicyclohexylphosphino-2′,6′-dimethoxy-1,1′-biphenyl (1.868 g, 4.55 mmol) and a solution of isopropanol-water (3:1, 80 mL). The mixture is degassed by bubbling N2 through and heated at 90° C. for 5 hours. The mixture is then cooled and filtered through celite, concentrated and purified by silica gel chromatography (0-100% EtOAc in CH2Cl2). The desired fractions are combined and stirred for 24 hours with QuadraSil MP (a mercaptopropyl bound silica gel, 20 g) to scavenge the palladium, filtered and concentrated to give desired title compound (7.5 g). LCMS (m/z)=478.6 [M+H]+, tR=2.97 min.

후처리

  1. customThe mixture is degassed
  2. customby bubbling N2 through and
  3. temperatureThe mixture is then cooled
  4. filtrationfiltered through celite,
  5. concentrationconcentrated
  6. custompurified by silica gel chromatography (0-100% EtOAc in CH2Cl2)
  7. filtrationfiltered
  8. concentrationconcentrated

출처 및 근거

ORD 기록
ord-948121cf3db84ae29cbe449ce64a4fc8
출처 데이터셋
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08871767B2

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