مختصر البحث:
Abstract:
This work includes syntheses of new heterocyclic compounds of folic acid ,from reaction of folic acid with (p-hydroxy,p- chloro,p-nitro ,4-N,N-di methyl )benzaldehyde,Vanillin and5,6,7alchol to produce alkyl ,ester and Schiff bases, the …
Abstract:
This work includes syntheses of new heterocyclic compounds of folic acid ,from reaction of folic acid with (p-hydroxy,p- chloro,p-nitro ,4-N,N-di methyl )benzaldehyde,Vanillin and5,6,7alchol to produce alkyl ,ester and Schiff bases, the compounds have been identified (FT-IR ,H1 NMR )the misomorphic phases were identified by polarized light microscope (POM) and measured transition temperatures for compound by differrntion scanning calorimeter (DSC) then study of liquid crystal where it was found that compounds of (1-8) gave liquid crystalline properties, where the compounds (1,2,3,5,6,7,8) gave the nematic phase ,but the compound (4) gave the smectic phase in addition to the nematic phase,while compounds (9,10,11) where oily compounds and showed not liquid crystalline properties.
Key words: Folic acid, Schiff basis, liquid crystal,nematic ester
