Sodium hydride → 7-Bromo-4-[1-(3-isopropyl-[1,2,4]oxadiazol-5-yl)-piperidin-4-yloxy]-thieno[3,2-d]pyrimidine

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30 mg of 1-(3-isopropyl-1,2,4-oxadiazol-5-yl)piperidin-4-ol was dissolved in 2 ml of N,N-dimethylformamide and cooled to 0° C. 9 mg of NaH was added to the mixture and stirred for 30 min. 50 mg of 7-bromo-4-chloro-thieno[3,2-d]pyrimidine was added to the mixture, heated to room temperature and stirred for 2 hr. The resulting mixture was added with aqueous ammonium chloride and extracted twice with ethyl acetate. The organic layer was washed with water, dried over anhydrous sodium sulfate, and concentrated under a reduced pressure to obtain a bubble residue. The resulting residue was crystallized in diethylether solvent to obtain 50 mg of the title compound as a white solid.

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