ethyl 5-methyl-3-oxo-1,2-dihydropyrrole-4-carboxylate 、
2,4,5-Trimethyl-1-[2-(trifluoromethyl)phenyl]pyrrole-3-carbaldehyde 在
potassium hydrogensulfate 作用下,
以
乙醇 为溶剂,
反应 3.0h,
以82%的产率得到ethyl (5E)-2-methyl-4-oxo-5-[[2,4,5-trimethyl-1-[2-(trifluoromethyl)phenyl]pyrrol-3-yl]methylidene]-1H-pyrrole-3-carboxylate