Solvophobic and polarity parameters are used to explain the endo/exo selectivity of the reaction between cyclopentadiene and methyl acrylate. A good linear regression model with Sp and E is obtained. The existence of an intrinsic correlation between the Sp and E values, which makes the interpretation of the results difficult, is shown. A comparison of the results with other previously reported showed that the relative influence of Sp and E on selectivity depends on the nature of the reagents.
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Cativiela et al. (1991) studied this question.