Issue 24, 2022

Lewis acid Sn-Beta catalysts for the cycloaddition of isoprene and methyl acrylate: a greener route to bio-derived monomers

Abstract

Sn-Beta zeolite catalysts were unprecedently used for the Diels–Alder cycloaddition reaction between bio-available methyl acrylate and isoprene affording intermediates to bio-terephthalates. The use of the solid Lewis acid Sn-Beta allows for a greener process which is also more feasible for industrial implementation, when compared to the presently used homogeneous and often hazardous catalysts. Incorporating SnIV in the zeolite beta framework by dealumination followed by solid-state ion-exchange, resulted in an efficient cycloaddition catalyst with a selectivity favoring the para-adduct. Detailed characterization combined with computational DFT studies revealed that the tetrahedral framework Sn-sites in Sn-Beta zeolites are responsible for the superior catalytic activity and selectivity, which is maintained even at elevated temperatures.

Graphical abstract: Lewis acid Sn-Beta catalysts for the cycloaddition of isoprene and methyl acrylate: a greener route to bio-derived monomers

Supplementary files

Article information

Article type
Paper
Submitted
27 jul 2022
Accepted
03 nov 2022
First published
04 nov 2022
This article is Open Access
Creative Commons BY license

Catal. Sci. Technol., 2022,12, 7439-7447

Lewis acid Sn-Beta catalysts for the cycloaddition of isoprene and methyl acrylate: a greener route to bio-derived monomers

P. Treu, P. Huber, P. N. Plessow, F. Studt and E. Saraçi, Catal. Sci. Technol., 2022, 12, 7439 DOI: 10.1039/D2CY01337A

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