6-fluoro-2-methyl-4-oxo-4H-chromene-8-carbaldehyde 、
乙酰乙酸乙酯 在
Ethyl 2-[(6-fluoro-2-methyl-4-oxo-4H-chromen-8-yl)methylene]-3-oxobutanoate 作用下,
以3.30 g (98% of theory) of the title compound are obtained as an E/Z isomer mixture的产率得到Ethyl 2-[(6-fluoro-2-methyl-4-oxo-4H-chromen-8-yl)methylene]-3-oxobutanoate