Methyl bromoacetate → {4-[2-(2,4-Dichloro-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-pyridin-2-yloxy}-acetic acid methyl ester

HRID 1097914Notes

Reaction equation

[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[CH:9]([CH3:23])[C:10]([C:16]1[CH:21]=[CH:20][NH:19][C:18](=[O:22])[CH:17]=1)([OH:15])[C:11]([F:14])([F:13])[F:12].[CH3:24][O:25][C:26](=[O:29])[CH2:27]Br>C1(C)C=CC=CC=1.C(=O)([O-])[O-].[Ag+2]>[CH3:24][O:25][C:26](=[O:29])[CH2:27][O:22][C:18]1[CH:17]=[C:16]([C:10]([OH:15])([C:11]([F:14])([F:13])[F:12])[CH:9]([C:3]2[CH:4]=[CH:5][C:6]([Cl:8])=[CH:7][C:2]=2[Cl:1])[CH3:23])[CH:21]=[CH:20][N:19]=1

Participants

Conditions

Temperature: 145 °C

Procedure

4-[2-(2,4-Dichloro-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-1H-pyridin-2-one (Example 119, 158 mg) was dissolved in toluene (5 mL), and treated with bromo-acetic acid methyl ester (0.03 mL) and silver carbonate (53 mg). The reaction mixture was then stirred at 145° C. (Bath-temperature) for 3.5 h, cooled down to r.t., filtered-off and concentrated in vacuo. The residue was purified by flash chromatography (10 g silica gel, ethyl acetate/heptane 1:9) to give the title compound as colorless oil (30 mg). MS (m/e)=438.3 (MH+).

Workup

temperaturecooled down to r.t.
concentrationfiltered-off and concentrated in vacuo
customThe residue was purified by flash chromatography (10 g silica gel, ethyl acetate/heptane 1:9)

Sources & evidence

ORD record: ord-82c3c4031f05427d976f9d4d7aa2b4c4
Source dataset: uspto-grants-2012_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08143280B2

Reaction notes

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