ethyl 4-benzoyl-3-hydroxy-5-nitrobenzoate 、
碘乙烷 、
ethyl 3-hydroxy-4-(4'-methylbenzoyl)-5-nitrobenzoate 、
1-碘丁烷 、
乙醇 以3-n-butoxy-4-(4'-methylbenzoyl)5-nitrobenzoic acid crystallizing with 0.5mole of ethanol is obtained with a melting point of 162.5°-163° C.的产率得到3-n-butoxy-4-(4'-methylbenzoyl)-5-nitrobenzoic acid