3-(3-(S)-hydroxypyrrolidine-1-carbonyl)-xanthen-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-去甲托品酮 在
2,2,2-trifluoro-1-{4-[3-(3-(S)-hydroxypyrrolidine-1-carbonyl)-xanthen-9-ylidene]-piperidin-1-yl}-ethanone 作用下,
以the title compound 2,2,2-trifluoro-1-{4-[3-(3-(S)-hydroxypyrrolidine-1-carbonyl)-xanthen-9-ylidene]-piperidin-1-yl}-ethanone, 3n was obtained的产率得到2,2,2-trifluoro-1-{4-[3-(3-(S)-hydroxypyrrolidine-1-carbonyl)-xanthen-9-ylidene]-piperidin-1-yl}-ethanone