Abstract
Data on rates and enthalpies of the reactions of quadricyclane (4) and diadamantylidene (5) with N-phenylmaleimide (1), 4-phenyl-1,2,4-triazoline-3,5-dione (2), and tetracyanoethylene (3) are obtained for the first time. Reagent 2 with the N=N reaction center is found to be six orders of magnitude more active than its structural analog 1. A strong π-acceptor 3 is 370 times more active than reagent 2 in the reaction with a strong π-donor substrate 4 but is less active than reagent 2 in many [4π + 2π], [2π + 2π + 2π], and [2π + 2π] cycloaddition reactions, and, especially, in ene reactions. The possible causes of the strong difference and variable activity of compounds 1–3 with C=C and N=N bonds are discussed.
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Original Russian Text © O.V. Anikin, D.A. Kornilov, T.V. Nikitina, V.D. Kiselev, 2018, published in Khimicheskaya Fizika, 2018, Vol. 37, No. 8, pp. 3–6.
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Anikin, O.V., Kornilov, D.A., Nikitina, T.V. et al. Variable Activity of Reagents with C=C and N=N Bonds in Cycloaddition Reactions. Russ. J. Phys. Chem. B 12, 595–598 (2018). https://doi.org/10.1134/S1990793118040176
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DOI: https://doi.org/10.1134/S1990793118040176