Title: Chemistry of terephthalate derivatives: a review

Authors: Asmaa M. Fahim; Ahmad M. Farag; Galal A.M. Nawwar; El Sayed M.A. Yakout; Eman A. Ragab

Addresses: Green Chemistry Department, National Research Center Dokki, P.O. Box 12622 Cairo, Egypt ' Department of Faculty of Science, Cairo University, P.O. Box 12613, Giza, Egypt ' Green Chemistry Department, National Research Center Dokki, P.O. Box 12622 Cairo, Egypt ' Green Chemistry Department, National Research Center Dokki, P.O. Box 12622 Cairo, Egypt ' Department of Faculty of Science, Cairo University, P.O. Box 12613, Giza, Egypt

Abstract: This review provides the preparation and reactions of poly(ethylene terephthalate) PET towards different reagents. Also, the synthesis of terepthalic acid from decomposition of poly (ethylene terephthalate) PET, the condensation of terephthalic acid with nitrogen nucleophiles afford several heterocyclic compounds. Furthermore, the treatment of terephthalic acid with SOCl₂ affords terephthaloyl chloride, which reacts with hydrazide derivatives to give benzamide compounds used in azodyes or liquid crystal. Moreover, the reaction of PET or terephthalate ester derivatives by reaction with NH₂NH₂ to afford the terephthalic dihydrazide. The latter compound demonstrate various heterocyclic compounds which anticipated industrial applications (dye cotton fabric, fibres, food backage, liquid crystalline polymeric systems and biological activities).

Keywords: poly (ethylene terephthalate) PET; terephthalic acid; terephthaloyl dichloride; terephthalic dihydrazide.

DOI: 10.1504/IJEWM.2019.103104

International Journal of Environment and Waste Management, 2019 Vol.24 No.3, pp.273 - 301

Received: 06 Dec 2017
Accepted: 25 Dec 2018
Published online: 15 Oct 2019 *

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