(S)-4-(4-fluoro-phenyl)-6-oxo-1,4,5,6-tetrahydro-pyridine-3-carboxylic acid chloride → (S)-4-(4-fluoro-phenyl)-6-oxo-1,4,5,6-tetrahydro-pyridine-3-carboxylic acid {1-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-1H-indol-6-yl}-amide

Participants

Reaction Conditions

Reaction Steps

1-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-1H-indol-6-ylamine was dissolved in 10 ml dichloromethane and 0.25 ml triethylamine. The solution was cooled to 0° C. and 150 mg of (S)-4-(4-fluoro-phenyl)-6-oxo-1,4,5,6-tetrahydro-pyridine-3-carboxylic acid chloride in 1.5 ml dichloromethane was added. The resulting mixture was stirred at 0° C. for one hour, then at room temperature for two hours. DMAP (100 mg) was added and the mixture stirred for another hour. The reaction mixture was then partitioned between pH 7 phosphate buffer and ethyl acetate. The organic layer was dried over sodium sulfate, filtered, concentrated under reduced pressure, and the residue purified by flash chromatography to give 70 mg of (S)-4-(4-fluoro-phenyl)-6-oxo-1,4,5,6-tetrahydro-pyridine-3-carboxylic acid {1-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-1H-indol-6-yl}-amide e/z 522 (M+H).

Provenance & Evidence