The rate and endo/exo selectivity of the Diels–Alder reaction between cyclopentadiene and methyl (E)‐α‐cyanocinnamate at 25°C, in several acetone–water and 1,4‐dioxane–water mixtures, were measured. The linear correlations of log k and log(endo/exo) vs solvophobicity are reported. Correlations for selectivity are considerably improved when the results obtained in acetone–water and 1,4‐dioxane–water are taken as separate series.
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Cativiela et al. (1990) studied this question.
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