5-chloro-9-oxo-9H-xanthene-3-carboxylic acid 、
5-methoxy-9-oxo-9H-xanthene-3-carboxylic acid 、
5-hydroxy-9-[1-(2,2,2-trifluoro-acetyl)-piperidin-4-ylidene]-9H-xanthene-3-carboxylic acid ethylamide 、
二乙胺 、
乙胺 在
5-chloro-9-oxo-9H-xanthene-3-carboxylic acid diethylamide 作用下,
以the title compound 5-chloro-9-oxo-9H-xanthene-3-carboxylic acid diethylamide, 4k was obtained的产率得到5-chloro-9-oxo-9H-xanthene-3-carboxylic acid diethylamide