4-Methylmorpholine → HCID 68644010, compound

Participants

Reaction Steps

To a solution of 5-(tert-butoxycarbonyl)-4-phenyl-4,5,6,7-tetrahydroisoxazolo-[4,5-c]pyridine-3-carboxylic acid (1.747 mmol, 1.0 eq.) in DMF (2 ml) was added BOP reagent (2.27 mmol, 1.3 eq.) and N-methyl morpholine (5.24 mmol, 3.0 eq.). The reaction mixture was stirred at room temperature for 15 min. A solution of piperidine (1.747 mmol, 1.0 eq.) in DMF (0.5 ml) was added to the reaction mixture and it was stirred for 12 h. The mixture was poured into water and resulting aqueous solution was extracted with ethyl acetate. The organic layer was successively washed with water and brine, and dried over sodium sulfate. The solvent was evaporated under reduced pressure to give the crude product which was purified by column chromatography (silica). Yield: 23%.

Provenance & Evidence