Since, 1,3,4-oxdiazole and 1,2,4-triazole derivatives are the most widely utilized heterocyclic moities, both biologically active and industrially useful, thus, the aim of this work is: Firstly, to synthesis a new series of 2,5-disubstituted-1,3,4-oxadiazoles and substituted 1,2,4-triazoles. Secondly, to investigate the liquid crystalline properties and biological activity of the synthesized series.

Plant oils and fats are important constituents of human and animal foodstuffs. Certain grades are industrially used and, together with carbohydrates and proteins, are important renewable resources compared to fossil and mineral raw materials, whose occurrence is finite. In concepts for new products, the price, performance, and product safety criteria are equally important and have a correspondingly high importance right at the start of product development. To ensure a high degree of product safety for consumers and the environment, renewable resources have often been shown to have advantages...

Poly(vinyl chloride) is second only to polyethylene among five kinds of general plastic materials, which was widely used in the industries including architecture, electronic, chemical engineering, packaging, transportation, etc.However, low photostability of PVC leads to hydrogen chloride loss,discoloration, and finally serious corrosion phenomena,accompanied by changes of physical and chemical properties of PVC. The low cost and the good performance of poly(vinyl chloride) products have increased the utilizationof this polymer in building, mainly in exterior application, such as window...