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Communication | Special issue | Vol 11, No. 1, 1978, pp.109-120
Published online, 1st January, 1970
DOI: 10.3987/S(N)-1978-01-0109
Solvent Dependence of Cycloaddition Rates of Phenyldiazomethane and Activation Parameters

Jochen Geittner, Rolf Huisgen,* and Hans-Ulrich Reissig

*Institut für Organische Chemie, Universität München, Karlstrasse 23, D-80333 München, Germany

Abstract

The small influence of solvent polarity on the rate constants of phenyldiazomethane additions to ethyl acrylate and norbornene as well as the Eyring activation parameters of diazoalkane cycloadditions are interpreted as evidence for early transition states of these concerted reactions.