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

Participants

Reaction Steps

A solution of (S)-4-(4-fluoro-phenyl)-6-oxo-1,4,5,6-tetrahydro-pyridine-3-carboxylic acid (138 mg), N,N-Diisopropylethylamine (155 mg) and HATU (152 mg) in NMP (1 ml) was stirred at room temperature for 10 minutes. A solution of 5-{1-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-1H-pyrazol-3-yl}-2-methyl-phenylamine (94 mg) in NMP (1 ml) was added, and the reaction mixture was stirred for 16 hours at room temperature. The reaction mixture was poured into water and extracted with EtOAc. The organic layer was washed with water and brine, dried (Na2SO4), filtered and concentrated under reduced pressure. The residue was purified by “flash chromatography” (0 to 5% MeOH in CH2Cl2) to give 62.2 mg of (S)-4-(4-Fluoro-phenyl)-6-oxo-1,4,5,6-tetrahydro-pyridine-3-carboxylic acid (5-{1-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-1H-pyrazol-3-yl}-2-methyl-phenyl)-amide as an amorphous solid.

Provenance & Evidence