Cesium carbonate → Methyl 2-([(2,4-difluorophenyl)methyl]oxy}-5-(4-morpholinylcarbonyl)benzoate

HRID 1623729Notes

Reaction equation

[OH:1][C:2]1[CH:11]=[CH:10][C:9]([C:12]([N:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)=[O:13])=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5].C(=O)([O-])[O-].[Cs+].[Cs+].Br[CH2:27][C:28]1[CH:33]=[CH:32][C:31]([F:34])=[CH:30][C:29]=1[F:35]>CC(C)=O>[F:35][C:29]1[CH:30]=[C:31]([F:34])[CH:32]=[CH:33][C:28]=1[CH2:27][O:1][C:2]1[CH:11]=[CH:10][C:9]([C:12]([N:14]2[CH2:15][CH2:16][O:17][CH2:18][CH2:19]2)=[O:13])=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5]

Participants

Conditions

Temperature: 50 °C

Procedure

To a stirred solution of methyl 2-hydroxy-5-(4-morpholinylcarbonyl)benzoate (may be prepared as described in Description 108, 270 mg, 1.02 mmol) in acetone (3 ml) was added cesium carbonate (663 mg, 2.04 mmol) and 1-(bromomethyl)-2,4-difluorobenzene (0.17 ml, 1.32 mmol). The mixture was heated at 50° C. for 2 hours, cooled and the solvent removed in vacuo. The residue was partitioned between water (5 ml) and ethyl acetate (10 ml). The organic layer was dried (MgSO4) and the solvent removed in vacuo to give a residue. Purification by column chromatography (silicon, 4:1 ethyl acetate/cyclohexane) yielded the title compound as a yellow gum. 100 mg.

Workup

temperaturecooled
customthe solvent removed in vacuo
customThe residue was partitioned between water (5 ml) and ethyl acetate (10 ml)
dry with materialThe organic layer was dried (MgSO4)
customthe solvent removed in vacuo
customto give a residue
customPurification by column chromatography (silicon, 4:1 ethyl acetate/cyclohexane)

Sources & evidence

ORD record: ord-805aab774ace4f6bb78021d601140838
Source dataset: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08778939B2

Reaction notes

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