3-Bromo-5-methoxythioxanthen-9-one 、
N,N-diethyl xanthen-9-one-3-carboxamide 、
1-(三氟乙酰基)-4-哌啶酮 、
N-叔丁氧羰基-4-哌啶酮 在
1-[4-(3-bromo-5-methoxythioxanthen-9-ylidene)-piperidin-1-yl]-2,2,2-trifluoroethanone 作用下,
以the title compound 1-[4-(3-bromo-5-methoxythioxanthen-9-ylidene)-piperidin-1-yl]-2,2,2-trifluoroethanone, 4q was obtained的产率得到1-[4-(3-bromo-5-methoxythioxanthen-9-ylidene)-piperidin-1-yl]-2,2,2-trifluoroethanone