Abstract
AbstractSinglet methylene was reacted with cyclopentadiene to give chemically activated bicyclo[3.1.0]hex‐2‐ene (BCH). The rate of isomerization of BCH to 1,4‐cyclohexadiene, 1,3‐cyclohexadiene, cis‐1,3,5‐hexatriene, and l‐methylcyclopentadiene is compared with calculated rate constants using the RRKM theory and measured or estimated thermal Arrhenius parameters. Subsequent isomerizations of the C6H8 products are also measured and calculated. These include 1,4‐cyclohexadiene to benzene and the reversible reactions between 1,3‐cyclohexadiene, cis‐1,3,5‐hexatriene, and trans‐1,3,5‐hexatriene. The results provide new data for several of these reactions which have not been observed in thermal studies. Agreement between the observed and calculated rates using the strong collision assumption is satisfactory except for the trans‐1,3,5‐hexatriene to cis‐1,3,5‐hexatriene reaction.
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