ABSTRACT
Enaminones undergo self-condensation on reflux in acidic media yielding 1,3,5-trisubstituted benzene in very high yields. Reaction of enaminones 1a,b with ethyl propiolate affords 5-aroyl-1,3-benzene dicarboxylate derivatives.
ACKNOWLEDGMENT
We are grateful to Alexander Von Humboldt stiftung for granting a Stependium to Prof. M. H. Elnagdi. The discussion of Prof. E. Fanghanel at University of Halle is highly appreciated. Some 1H NMR and 13C NMR spectra were carried out at University of Halle.