Synthesis of Schiff Bases Derived From Benzaldehyde and Salicylaldehyde With Some Amino Acids by a New Develop Method

Abstract

The project is aimed at the synthesis of some Schiff bases derived from
benzaldehyde and salicylaldehyde with some amino acids as glycine, DL-alanine ßalanine,
and L- methionine, with a new alternative method. The development includes
the use of 10-2mole sodium hydroxide as a new catalyst, which is added to the
classical method of Schiff bases synthesis. This method is applied successfuly to the
synthesis of six imines from compounds mentioned .The structures of these Schiff
bases are confirmed by using physical methods, namely, melting points or boiling
point, UV and IR spectra. Finally a new suggested mechanism for the reaction
mechanism is given, which is composed from three steps, on of them is slow, the
other two are fast .