Water → HCID 21108215, compound

Participants

Reaction Steps

Potassium carbonate (316 mg, 2.29 mmol) was added to a solution of 3,4-dihydro-6-[2-(N,N-dipropylamino)ethyl]-2H-1,4-benzoxazine hydrochloride (200 mg, 0.76 mmol) obtained in Example 134 and 1-chloromethyl naphthalene (400 mg, 2.29 mmol) in DMF (15 ml). After the reaction solution was stirred at room temperature for 2 hours, water was added to the reaction solution which was then extracted with ethyl acetate. The extract was washed with water, dried over anhydrous sodium sulfate and concentrated. The residues were purified by silica gel column chromatography (developing solvent; hexane:ethyl acetate=3:1), treated with 4 N hydrochloric acid in ethyl acetate and crystallized from acetone-pentane, whereby the title compound (80 mg) was obtained as crystals with a mp of 177 to 178° C.

Provenance & Evidence