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Effect of catalytic conditions on the synthesis of new aconitate esters

Piang-Siong, William and De Caro, Pascale and Lacaze-Dufaure, Corinne and Shum Cheong Sing, Alain and Hoareau, William Effect of catalytic conditions on the synthesis of new aconitate esters. (2011) Industrial Crops and Products, vol. 35 . pp. 203-210. ISSN 0926-6690

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Official URL: http://dx.doi.org/10.1016/j.indcrop.2011.06.031

Abstract

Sugar cane is a crop which generates large amounts of biomass and a juice rich in highvalue natural molecules. After extracting sugar from the juice, the recovering of various compounds such as organic acids contained in molasses could contribute to increase the competivity of the sugar industry. Therefore, according to the biorefinery approach, we propose to study the chemical conversion of one of these acids, the aconitic acid, by esterification reactions. A new series of aconitate esters have been synthesized by combining aconitic acid and alcohols from natural origin. The effects of experimental conditions have been investigated and have shown that the type of catalysis has a significant effect on the selectivity. Kinectics have thus been performed to determine the best conditions to synthetize enriched compositions in esters. Homogeneous catalysis generates the highest yield in triester. Heterogeneous catalysis(macroporous resins) is prefered for the production of monoesters while catalysis assisted by ionic liquid is adapted to prepare mainly diesters. Green indicators have been discussed according to the calculations performed. The resulting polyfunctional esters are totally biosourced molecules and have a great potential as bioproducts for different applications.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original version is available at http://www.sciencedirect.com The original PDF of the article can be found at : http://www.sciencedirect.com/science/article/pii/S0926669011002548
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Institut National de la Recherche Agronomique - INRA
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université de La Réunion (FRANCE)
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Deposited By:Denis Faragou

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