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Updated: Jan 30, 2026

The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry
Published on: August 25, 2016
Effect of an α-Methyl Substituent on the Dienophile on Diels-Alder endo:exo Selectivity
Olatz Larrañaga1, Abel de Cózar1,2
1Departamento de Química Orgánica I Facultad de Química Universidad del País Vasco and Donostia International Physics Center (DIPC) P. K. 1072 E-20018 San Sebastián-Donostia Spain.
Abstract:
A detailed computational study of the Diels-Alder reaction of cyclopentadiene with acrylonitrile, methylacrylate and their α-methylated counterparts methacrylonitrile and methyl methacrylate at the M06-2X(PCM)/TZVP level of theory has been performed. We want to understand the excellent exo-selectivities observed experimentally due the presence of this substituent. To this end, analysis of the reaction coordinate by means of activation strain model of chemical reactivity (ASM-distortion interaction model) including solvation effects and NBO second order perturbation energy have been carried out.
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