Potassium Carbonate → methyl 5-[(3-{[2-fluoro-1-(fluoromethyl)ethyl]oxy}-5-{[(1-methyl-1H-pyrazol-3-yl)amino]carbonyl}phenyl)oxy]pyrazine-2-carboxylate

HRID 1989934Notes

Reaction equation

HRID 1989934 reaction equation
[F:1][CH2:2][CH:3]([O:6][C:7]1[CH:8]=[C:9]([CH:19]=[C:20]([OH:22])[CH:21]=1)[C:10]([NH:12][C:13]1[CH:17]=[CH:16][N:15]([CH3:18])[N:14]=1)=[O:11])[CH2:4][F:5].Cl[C:24]1[N:25]=[CH:26][C:27]([C:30]([O:32][CH3:33])=[O:31])=[N:28][CH:29]=1.C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[F:5][CH2:4][CH:3]([O:6][C:7]1[CH:21]=[C:20]([O:22][C:24]2[N:25]=[CH:26][C:27]([C:30]([O:32][CH3:33])=[O:31])=[N:28][CH:29]=2)[CH:19]=[C:9]([C:10]([NH:12][C:13]2[CH:17]=[CH:16][N:15]([CH3:18])[N:14]=2)=[O:11])[CH:8]=1)[CH2:2][F:1]

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 406081Methyl 5-chloropyrazine-2-carboxylateHCID 591271643-{[2-fluoro-1-(fluoromethyl)ethyl]oxy}-5-hydroxy-N-(1-methyl-1H-pyrazol-3-yl)benzamide

Product 1

HCID 59127106methyl 5-[(3-{[2-fluoro-1-(fluoromethyl)ethyl]oxy}-5-{[(1-methyl-1H-pyrazol-3-yl)amino]carbonyl}phenyl)oxy]pyrazine-2-carboxylateYield 90.8%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of 3-{[2-fluoro-1-(fluoromethyl)ethyl]oxy}-5-hydroxy-N-(1-methyl-1H-pyrazol-3-yl)benzamide (250 mg, 0.8 mmol), methyl 5-chloropyrazine-2-carboxylate (208 mg, 1.20 mmol) and potassium carbonate (222 mg, 1.61 mmol) in acetonitrile (5 mL) was stirred in a ‘Biotage initiator Microwave’ at 120° C. for 3 hours. The solvent was removed in vacuo and the residue dissolved in ethyl acetate (50 mL) and water (50 mL), the organic layer washed with brine (50 mL), dried (MgSO4), filtered and the solvent removed in vacuo to give a yellow oil which was chromatographed on silica, eluting with 0-100% ethyl acetate in isohexane, to give the desired compound (0.325 g). 1H NMR δ (CDCl3): 3.71 (s, 3H), 3.96 (s, 3H), 4.56 (m, 2H), 4.68 (m, 3H), 6.73 (s, 1H), 6.95 (s, 1H), 7.22 (s, 1H), 7.27 (s, 1H), 7.36 (s, 1H), 8.46 (s, 1H), 8.67 (s, 1H), 8.67 (s, 1H); m/z 448 (M+H)+

Workup

  1. customThe solvent was removed in vacuo
  2. dissolutionthe residue dissolved in ethyl acetate (50 mL)
  3. washwater (50 mL), the organic layer washed with brine (50 mL)
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. customthe solvent removed in vacuo
  7. customto give a yellow oil which
  8. customwas chromatographed on silica
  9. washeluting with 0-100% ethyl acetate in isohexane

Sources & evidence

ORD record
ord-e3c835ec545041ebb28243904894cf17
Source dataset
uspto-grants-2010_01
Patent number
US07642263B2

Reaction notes

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