反应详情

The title compound was prepared by the procedure in Example 18 starting with 10.13 g (29 mmol) of the N-(5-bromopentyl)-N'-(4-carbomethoxythien-3-yl]urea of Example 12 and 15.47 g (58 mmol) of 1-(3-trifluoromethylphenyl)piperazine hydrochloride. There was obtained 13.08 g (96%) of the known 3-[5-[4-(3-trifluoromethylphenyl)piperazin-1-yl]pentyl]thieno[3,4-d]pyrimidine-2,4-dione (J. Press and R. Russell, U.S. Pat. No. 4,670,560) which was crystallized from CH2Cl2 /hexane to afford a white solid, mp 118°-123° C.