Ethyl 4-(bromomethyl)picolinate → HCID 59508608, compound

HRID 1095930Notes

Reaction equation

[Cl:1][C:2]1[CH:3]=[C:4]([OH:23])[CH:5]=[CH:6][C:7]=1[CH:8]([CH3:22])[C:9]([OH:21])([C:14]1[CH:19]=[CH:18][N:17]=[C:16]([CH3:20])[CH:15]=1)[C:10]([F:13])([F:12])[F:11].[CH2:24]([O:26][C:27]([C:29]1[CH:34]=[C:33]([CH2:35]Br)[CH:32]=[CH:31][N:30]=1)=[O:28])[CH3:25]>CN(C=O)C.C(=O)([O-])[O-].[Ag+2]>[CH2:24]([O:26][C:27]([C:29]1[CH:34]=[C:33]([CH2:35][O:23][C:4]2[CH:5]=[CH:6][C:7]([CH:8]([CH3:22])[C:9]([OH:21])([C:14]3[CH:19]=[CH:18][N:17]=[C:16]([CH3:20])[CH:15]=3)[C:10]([F:13])([F:11])[F:12])=[C:2]([Cl:1])[CH:3]=2)[CH:32]=[CH:31][N:30]=1)=[O:28])[CH3:25]

Participants

Conditions

Temperature: 80 °C

Procedure

3-Chloro-4-[3,3,3-trifluoro-2-hydroxy-1-methyl-2-(2-methyl-pyridin-4-yl)-propyl]-phenol (100 mg, obtained in Example 93, step 6) and ethyl-4-(bromomethyl)-pyridine-2-carboxylate (85 mg, [CAS Reg. No. 153994-03-7]) were dissolved in DMF (5 mL) followed by addition of silver carbonate (80 mg). The mixture was heated to 80° C. for 3 hours. The reaction mixture was cooled, poured into ice/water and extracted two times with ethyl acetate. The combined organic layers were washed with brine, dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography (silica gel, gradient of heptane in ethyl acetate) to give the title compound as a yellow foam (98 mg, 63%). MS (m/e)=509.3 [MH+].

Workup

temperatureThe reaction mixture was cooled
extractionextracted two times with ethyl acetate
washThe combined organic layers were washed with brine
dry with materialdried over Na2SO4
filtrationfiltered
customthe solvent was evaporated
customThe residue was purified by flash chromatography (silica gel, gradient of heptane in ethyl acetate)

Sources & evidence

ORD record: ord-54837cd5ac4f459284d38e8ceecb1617
Source dataset: uspto-grants-2012_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08138189B2

Reaction notes

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