Diethyl Ether → HCID 57677738, compound

Participants

Reaction Steps

To a solution of 3-[6-(4-amino-2-fluorophenoxy)pyrimidin-4-yl]-1-methyl-1-[1-(1-methylazetidin-3-yl)piperidin-4-yl]urea (68.0 mg) in ethanol (2.0 ml) was added (1S)-(+)-10-camphorsulfonic acid (70.2 mg), followed by stirring at room temperature for 10 min. A solution of 2-phenylacetyl isothiocyanate in toluene (0.25 M, 1.91 ml) was added to the reaction mixture, followed by stirring at room temperature for 30 min. The reaction mixture was partitioned between ethyl acetate (50 ml) and a saturated aqueous solution of sodium hydrogencarbonate (20 ml). The organic layer was washed with brine, and dried over anhydrous sodium sulfate. The organic layer was concentrated to give a residue, which was then purified by silica gel column chromatography (FUJI Silysia NH, eluent; ethyl acetate, then ethyl acetate:methanol=25:1). Fractions containing the target compound were concentrated to give a residue, which was added diethyl ether (2 ml) to give a precipitate. The precipitate was filtered off, washed with diethyl ether, and dried under aeration to provide the titled compound (12.9 mg, 13.4%) as white powder.

Provenance & Evidence