Iodine → 3-[4-(2-Bromo-5-fluorophenoxy)piperidin-1-yl]isoxazole-5-carboxamide

Participants

Reaction Steps

To a stirred suspension of 3-[4-(2-bromo-5-fluorophenoxy)piperidin-1-yl]-4,5-dihydroisoxazole-5-carboxamide (2.3 g, 5.96 mmol) and sodium acetate (1.3 g, 15.85 mmol) in chlorobenzene (15 mL) was added iodine (2 g, 7.88 mmol). The mixture was heated at reflux temperature for 3 h. After cooling, a solution of Na2S2O3, water and EtOAc were added. The mixture was stirred for 5 min and filtered through celite to remove the insoluble material. The organic layer was then separated, washed with brine, dried (Na2SO4) and concentrated. The residue was triturated with Et2O to give the title compound as light brown powder.

Provenance & Evidence