反应详情

Following the procedure of Example 4, 2-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy]propionic acid chloride is added to the sodium salt of methyl propionylacetate in benzene to give methyl 2-propionyl-4-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy]-3-oxopentanoate (cpd. 27, Table C). This pentanoate is then heated with sodium chloride and DMSO to give 2-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy]-3,5-heptanedione (cpd. 27, Table D).