Synthesis and Study of Aromatic Amido-Ester Compounds

A number of mesogenic homologous series are reported having -COO-, -CH=N-, -N=N-, -CH=CH-, -CH=CH-COO-, -C=C-,etc. groups as central linkages. Many mesogenic homologous series contain two central linkages, both of them may either be ester or azomethine groups or one of them may be ester and the other azomethine. We were looking forward to synthesize a homologues which gives smectogenic tendencies, moreover it would be quite interesting to further evaluate the effect of amide central linkage on Nematic systems. With this in view, homologues were synthesized and their liquid crystalline properties were evaluated.