Abstract
p-NN-diethylamino benzaldehyde has set a series of reactions with substituted glycines, rhodanine, hydantoin, thiohydantoin, malon anilic acids and substituted malon anilic acid hydrazides, fluorene and cyanoacetamide. The product obtained in each condensation has been isolated, purified and identified by elemental analysis. The study of the position of formyl group in the benzene ring and its reactive nature (I, II and III) has been done on the basis of IR, NMR spectral data of the aldehyde (I). The study reveals that on the theoretical bases the substitution of formyl group will be in the meta position with respect to the cyanoethyl group of the benzene ring. So it is possible that the aldehyde (I) may have been the proposed structure and same for the other aldehydes (II & III).