six new products using Knoevenagel condensation of isophthalaldehyde and
terephthalaldehyde have been prepared with the following active methylene
compounds: malononitrile, methyl cyano acetate, ethyl cyano acetate, dimethyl
malonate and diethyl m
alonate. We determined the optimum conditions of the
reaction by studying the effect of solvent and catalyst nature and reaction
conditions on the condensation.
A series of new heterocyclic compounds of2-(5-substituted-furfurylidene)-
Indane-1,3-dione, were prepared and identified by their melting points,
Infrared, Ultraviolate, and Nuclear magnetic resonance spectra.
Hetrocyclic compounds 5-(5-R-2-Furfurlidene)– barbituric acid were
obtained and their physical and chemical properties were studied. Their
structures were identified by spectoroscopic methods. This study proved by
1H-NMR Spectroscopy data that these compounds exist in S-cis form.
