Designed New Mesogence Containing 5H-Thiazolo[3,4-B][1,3,4]Thiadiazole : Synthesis and Investigation of Liquid Crystals Properties

EasyChair Preprint 5885

Abstract

This research  include synthesized and characterization the compound [I] by reaction terephthaldehyde ,  mercaptoacetic acid and thiosemicarbazide with concentrated sulfuric acid then this compound reaction with ethyl chloroacetate and sodium acetate to product ester compound [II],the latter compound reaction with hydrazine hydrate to synthesized acid  hydrazide [III]  after that  reaction with 4-alkoxy benzaldehyde[IV]n to synthesized Schiff bases compounds [V]n, the compound[VI] synthesized via reaction compound [I] with chloroacetic acid and sodium acetate then the compound[VI] reaction with 2-phenylenediamine in 4 N hydrochloric acid to product  benzimidazole compound[VII].  The compounds characterized by melting points, FTIR and ¹HNMR spectroscopy. The mesomorphic behavior studied by using polarized optical microscopy.

Keyphrases: Liquid crystals, Schiff bases, heterocyclic

@booklet{EasyChair:5885,
  author    = {Maha A.Jabar and Nisreen H.Karam},
  title     = {Designed New Mesogence Containing 5H-Thiazolo[3,4-B][1,3,4]Thiadiazole : Synthesis and Investigation of Liquid Crystals Properties},
  howpublished = {EasyChair Preprint 5885},
  year      = {EasyChair, 2021}}