Methyl chloroglyoxylate → HCID 59846170, compound

Participants

Reaction Conditions

Reaction Steps

To a 0° C. solution of 1-(4-fluoro-2-phenylamino-phenyl)-3-(4-methanesulfonyl-piperidin-1-yl)-propan-1-one (500 mg) in THF (8 mL) under N2 was added NaHMDS (3.1 mL, 1 M in THF). After 5 min, chloro-oxoacetic acid methyl ester (0.28 mL) was added, and the mixture stirred for 2 h at 0° C., then for 1 h at RT. The reaction mixture was quenched with NH4Cl (sat'd aq), extracted with EtOAc, and chromatographed (0-20% MeOH/DCM) to provide 7-fluoro-3-(4-methanesulfonyl-piperidin-1-ylmethyl)-4-oxo-1-phenyl-1,4-dihydro-quinoline-2-carboxylic acid methyl ester (301 mg, Compound 126). M+H=473; mp=190.0-191.0° C.

Provenance & Evidence