Polyketoesters from oleic acid. Synthesis and functionalization
作者:Maryluz Moreno、Gerard Lligadas、Juan C. Ronda、Marina Galià、Virginia Cádiz
DOI:10.1039/c3gc41346b
日期:——
In this study, we exploited the reactivity of the methyloleate enone derivative for the conversion of this renewable raw material to ketone-containing hydroxyesters. The radical-mediated thiol–ene addition to the conjugated double bonds has been investigated and low yields were obtained due to secondary reactions. The thiol-Michael addition under acidic and basic/nucleophilic conditions was also examined
Synthesis and functionalization of vinylsulfide and ketone-containing aliphatic copolyesters from fatty acids
作者:Zeynep Beyazkilic、Gerard Lligadas、Juan Carlos Ronda、Marina Galià、Virginia Cádiz
DOI:10.1016/j.polymer.2015.10.024
日期:2015.11
A series of novel aliphatic copolyesters bearing vinylsulfide and ketone functional groups were synthesized via lipase catalyzed polycondensation of vegetable oil derivatives. The vinylsulfide-containing hydroxyacid (VSHA) from 10-undecenoic fatty acid and the ketone-containing hydroxyester (KHE) from methyl oleate were used to obtain random copolymers and further sequential and single-step strategies involving the reactions with thiol and oxyamine were investigated. Good agreement between product and feed stoichiometries was achieved in both reactions for sequential modification, and the order of addition seems not to be a significant parameter. One pot functionalization allows for the single step modification, but not quantitative reactions were achieved. (C) 2015 Elsevier Ltd. All rights reserved.