tert-butyl 4-{4-[6-(4-ethyl-6-oxo-1,4,5,6-tetrahydro-pyridazin-3-yl)benzoxazol-2-yl]phenoxymethyl}piperidine-1-carboxylate 在
盐酸 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
以82.7%的产率得到4-{4-[6-(4-ethyl-6-oxo-1,4,5,6-tetrahydro-pyridazin-3-yl)benzoxazol-2-yl]phenoxymethyl}piperidine hydrochloride