A New Type of Banana Shape Bifunctional Monomer of Ester Chalcones

Zainab, Ngaini and Mei Chee, Chua and Lian, Chin Lim (2014) A New Type of Banana Shape Bifunctional Monomer of Ester Chalcones. Malaysian Journal of Fundamental and Applied Sciences, 10 (2). pp. 53-58. ISSN 1823-626X

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Abstract

A synthesis of a new type of chalcone analogue banana-shaped liquid crystals compounds is described. The approach involved the reaction of hydroxyl chalcones with isophthaloyl dichloride to form benzene-1,3-dicarbonyl-bis-1-(4-alkoxyphenyl)-3-(4-hydroxylphenyl)prop-2-en-1-one (7a-c and 8a-c) having two chalcone units via esterification reaction. The hydroxyl chalcones, which differ in the length of alkyl group, CnH2n+1, where n= 10, 12 and 14 were synthesised via Claisen Schmidt condensation prior to the reaction with isophthaloyl dichloride. The reaction was a catalyst dependence. No sign of product was formed by employing NaH (60%). It was only occurred in the presence of NaH (95%) to afford banana shape bi-functional monomer of ester chalcone 7a-c and 8a-c. The synthesized compound was characterized by 1H and 13C Nuclear Magnetic Resonance (NMR), and Fourier Transform Infrared (FTIR).

Item Type: Article
Uncontrolled Keywords: chalcones, banana shape liquid crystals, alkyl chains, ester, Universiti Malaysia Sarawak, UNIMAS, university, universiti, Malaysia, Sarawak, Kuching, Samarahan, IPTA, education,undergraduate,postgraduate, research
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
T Technology > T Technology (General)
T Technology > TP Chemical technology
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 03 Dec 2013 00:47
Last Modified: 28 Dec 2016 06:43
URI: http://ir.unimas.my/id/eprint/87

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