Morpholine → HCID 23153304, compound

Participants

Reaction Steps

A crude product of 4-(2-chloro-4-nitrophenoxy)-2-(phenoxycarbonylamino)pyridine (634.8 mg) was dissolved in tetrahydrofuran (6.5 ml), and then morpholine (0.942 ml) was added thereto at room temperature, followed by stirring overnight and evaporating the solvent under a reduced pressure. The resultant residue was dissolved in ethanol (20 ml)-water (5 ml), and then electrolytic iron powder (500 mg) and ammonium chloride (1 g) were added thereto, followed by heating under reflux for 1 hr. The reaction mixture was cooled down to room temperature, and filtered through celite to remove an insoluble portion, which was washed with ethyl acetate-tetrahydrofuran (1:1) and water. The organic layer of the filtrate was separated, washed with water and brine in this order, dried over anhydrous sodium sulfate. The solvent was evaporated to give a residue, which was purified by silica gel column chromatography (eluent; ethyl acetate, then ethyl acetate:methanol=95:5) to provide the titled compound (283.3 mg) as pale yellow powder.

Provenance & Evidence