5-Chloro-2-(trifluoromethyl)phenylboronic acid → tert-Butyl 4-[(2-{4-[5-chloro-2-(trifluoromethyl)phenyl]-5-cyano-2-oxopyridin-1(2H)-yl}propanoyl)amino]benzoate
Reaction equation
Br[C:2]1[C:7]([C:8]#[N:9])=[CH:6][N:5]([CH:10]([CH3:27])[C:11]([NH:13][C:14]2[CH:26]=[CH:25][C:17]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])=[CH:16][CH:15]=2)=[O:12])[C:4](=[O:28])[CH:3]=1.[Cl:29][C:30]1[CH:31]=[CH:32][C:33]([C:39]([F:42])([F:41])[F:40])=[C:34](B(O)O)[CH:35]=1>>[Cl:29][C:30]1[CH:31]=[CH:32][C:33]([C:39]([F:40])([F:41])[F:42])=[C:34]([C:2]2[C:7]([C:8]#[N:9])=[CH:6][N:5]([CH:10]([CH3:27])[C:11]([NH:13][C:14]3[CH:26]=[CH:25][C:17]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])=[CH:16][CH:15]=3)=[O:12])[C:4](=[O:28])[CH:3]=2)[CH:35]=1Participants
3
Procedure
127 mg (purity 70%, 0.2 mmol) of tert-butyl 4-{[2-(4-bromo-5-cyano-2-oxopyridin-1(2H)-yl)propanoyl]amino}benzoate (racemate) and 54 mg (0.24 mmol) of 5-chloro-2-trifluoromethylphenylboronic acid in the presence of [1,1-bis(diphenylphosphino)ferrocene]palladium(II) chloride/dichloromethane monoadduct were reacted according to General Method 2A. After aqueous work-up, the crude product was triturated with water and the solid was filtered off, dried and purified further by flash chromatography (silica gel 60, mobile phase: cyclohexane/ethyl acetate mixtures). Yield: 124 mg (quant.)