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Comparative esterification of phenylpropanoids versus hydrophenylpropanoids acids catalyzed by lipase in organic solvent media Julia Cassani Héctor Luna* Arturo Navarro Edmundo Castillo *Corresponding author Financial support: This project was financed by Consejo Nacional de Ciencia y Tecnología (CONACyT) Grant num. 37272-N. Keywords: CAL-B, electronic effects, esterification, lipase, phenylpropanoid acids.
The esterification of phenylpropanoid and hydrophenylpropanoid acids, catalyzed by candida antarctica lipase B (CAL-B), with several alcohols has demonstrated that the substitution pattern on the aromatic ring has a very significant influence on the reactivity of the carboxyl group due, mainly, to electronic effects, when compared to the unsaturated acids with the hydrogenated acids. It is also clear that in the saturated acids there still remain some unclear effects related to the aromatic substituents. |
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