Dimethylformamide → (R)-2-[3-(2,4-dichlorobenzyl)-8-fluoro-4-methyl-2-oxo-1,2-dihydroquinolin-5-yloxy]propionic Acid Methyl Ester

HRID 2266615Notes

Reaction equation

[Cl:1][C:2]1[CH:22]=[C:21]([Cl:23])[CH:20]=[CH:19][C:3]=1[CH2:4][C:5]1[C:6](=[O:18])[NH:7][C:8]2[C:13]([C:14]=1[CH3:15])=[C:12]([OH:16])[CH:11]=[CH:10][C:9]=2[F:17].CN(C)C=O.C(=O)([O-])[O-].[K+].[K+].[CH3:35][O:36][C:37](=[O:41])[C@@H:38](Cl)[CH3:39]>O>[CH3:35][O:36][C:37](=[O:41])[C@H:38]([O:16][C:12]1[CH:11]=[CH:10][C:9]([F:17])=[C:8]2[C:13]=1[C:14]([CH3:15])=[C:5]([CH2:4][C:3]1[CH:19]=[CH:20][C:21]([Cl:23])=[CH:22][C:2]=1[Cl:1])[C:6](=[O:18])[NH:7]2)[CH3:39]

Participants

Conditions

Temperature: 45 °C

Procedure

A mixture of 3-(2,4-dichlorobenzyl)-8-fluoro-5-hydroxy-4-methyl-1H-quinolin-2-one (0.30 g), N,N-dimethylformamide (4.0 mL), potassium carbonate (0.13 g) and (S)-2-chloropropionic acid methyl ester (0.11 g) was stirred at 45° C. for 3 days. The mixture was diluted with water and extracted with ethyl acetate. The combined extracts were washed saturated aqueous sodium chloride solution, dried over magnesium sulfate and the solvent removed under reduced pressure. The residue was purified by column chromatography on silica gel, eluting with a mixture of dichloromethane and ethyl acetate (1:0 to 6:4 by volume) to afford title compound as a pale peach solid, 0.17 g.

Workup

extractionextracted with ethyl acetate
washThe combined extracts were washed saturated aqueous sodium chloride solution
dry with materialdried over magnesium sulfate
customthe solvent removed under reduced pressure
customThe residue was purified by column chromatography on silica gel
washeluting with a mixture of dichloromethane and ethyl acetate (1:0 to 6:4 by volume)

Sources & evidence

ORD record: ord-9cdfdefd189f4dbfade7af2ad48879d6
Source dataset: uspto-grants-2010_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07858640B2

Reaction notes

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