Thermal unimolecular isomerization of cyclobutenes. Part 7.—Bicyclo [3,2,0]-hept-6-ene
- 1 January 1966
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 62, 659-663
- https://doi.org/10.1039/tf9666200659
Abstract
The thermal isomerization of bicyclo [3,2,0]-hept-6-ene has been studied in the gas phase and in solution in the temperature ranges 274–327° and 256–288° respectively. In both phases the reaction was kinetically first order and yielded only one product, cyclohepta-1,3-diene. From the rate constants obtained at a number of temperatures in each temperature range the following Arrhenius equations were calculated: kgas= 1014.31 exp (–45,510/RT)sec–1, ksolution= 1014.65 exp (–45,860/RT)sec–1. The experimental results indicate that this isomerization, like the other cyclobutenes so far investigated in detail, is a true unimolecular reaction.Keywords
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