Cesium carbonate → 3-{[5-(azetidin-1-ylcarbonyl)pyrazin-2-yl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)-5-[(3S)-tetrahydrofuran-3-yloxy]benzamide

HRID 1990198Notes

Reaction equation

HRID 1990198 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]([CH:14]=[C:15]([O:17][C@H:18]2[CH2:22][CH2:21][O:20][CH2:19]2)[CH:16]=1)[C:5]([NH:7][C:8]1[CH:12]=[CH:11][N:10]([CH3:13])[N:9]=1)=[O:6].[N:23]1([C:27]([C:29]2[CH:34]=[N:33][C:32](Cl)=[CH:31][N:30]=2)=[O:28])[CH2:26][CH2:25][CH2:24]1.C(=O)([O-])[O-].[Cs+].[Cs+]>C(#N)C>[N:23]1([C:27]([C:29]2[N:30]=[CH:31][C:32]([O:1][C:2]3[CH:3]=[C:4]([CH:14]=[C:15]([O:17][C@H:18]4[CH2:22][CH2:21][O:20][CH2:19]4)[CH:16]=3)[C:5]([NH:7][C:8]3[CH:12]=[CH:11][N:10]([CH3:13])[N:9]=3)=[O:6])=[N:33][CH:34]=2)=[O:28])[CH2:26][CH2:25][CH2:24]1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 46870328(Azetidin-1-yl)(5-chloropyrazin-2-yl)methanoneHCID 59127171HCID 59127171, compound

Product 1

HCID 160397273-{[5-(azetidin-1-ylcarbonyl)pyrazin-2-yl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)-5-[(3S)-tetrahydrofuran-3-yloxy]benzamideYield 31%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
160 °C

Procedure

A mixture of 3-hydroxy-N-(1-methyl-1H-pyrazol-3-yl)-5-[(3S)-tetrahydrofuran-3-yloxy]benzamide (80 mg, 0.26 mmol), 2-(azetidin-1-ylcarbonyl)-5-chloropyrazine (52 mg, 0.26 mmol) and caesium carbonate (172 mg, 0.53 mmol) in acetonitrile (3 mL) was stirred in a Smith Creator microwave at 160° C. for 1 hr. The solvent was removed in vacuo and ethyl acetate (50 mL) added to the residue. The organic phase was washed with water (20 mL), brine (50 mL), dried (MgSO4), filtered and the solvent removed in vacuo to give a yellow oil which was chromatographed on silica eluting with a gradient of 0-10% methanol in DCM to give the title compound (36 mg, 31%) as a white foam. This compound was crystallised from ethyl acetate and isohexane using vapour diffusion techniques. 1H NMR δ (CDCl3): 2.12-2.19 (1H, m), 2.21-2.28 (1H, m), 2.34-2.42 (2H, m), 3.75 (3H, s), 3.88-3.93 (1H, m), 3.98-4.02 (3H, m), 4.23 (2H, t), 4.69 (2H, t), 4.95-4.97 (1H, m), 6.80 (1H, d), 6.87 (1H, t), 7.23 (1H, d), 7.27-7.30 (1H, m), 7.28-7.30 (1H, m), 8.34 (1H, d), 8.84 (1H, d), 8.98 (1H, s); m/z 465 (M+H)+.

Workup

  1. customThe solvent was removed in vacuo and ethyl acetate (50 mL)
  2. additionadded to the residue
  3. washThe organic phase was washed with water (20 mL), 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 eluting with a gradient of 0-10% methanol in DCM

Sources & evidence

ORD record
ord-374fe73856014959b1aec8c769290511
Source dataset
uspto-grants-2010_01
Patent number
US07642259B2

Reaction notes

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