The thermal decomposition of cyclopent-3-enone has been studied in the gas phase in the temperature range 325–380°. The reaction is homogeneous, first order, and probably unimolecular and yields butadiene and carbon monoxide quantitatively. The rate constants fit the Arrhenius equation (i). The decomposition is probably concerted. log (k/s–1)= 14·519 ± 0·069 – 214,440 ± 830 J mol–1/2·303RT(i)
W. R. Dolbier and H. M. Frey, J. Chem. Soc., Perkin Trans. 2, 1974, 1674 DOI: 10.1039/P29740001674
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