Water → N-1,2-Benzisoxazol-3-yl-4-(pyridin-2-ylcarbonyl)piperazine-1-carboxamide

Participants

Reaction Steps

To a solution of N-1,2-benzisoxazol-3-ylpiperazine-1-carboxamide trifluoroacetate (200 mg, 0.555 mmol) and triethylamine (0.309 ml, 2.22 mmol) in tetrahydrofuran (4 ml) was added picolinoyl chloride hydrochloride (148 mg, 0.833 mmol) under ice-cooling, and the mixture was stirred at room temperature for 1 hour. The reaction mixture was poured to water and extracted with ethyl acetate. The extract was washed with water, and the solvent was distilled off under reduced pressure. The residue was recrystallized from a mixed solvent of hexane and ethyl acetate to give 53.0 mg (27.2%) of the desired product as a solid.

Provenance & Evidence