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Gas-phase pyrolysis mechanism and kinetics of 3-chloroquadricyclane

โœ Scribed by Angelo J. Alfano

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
133 KB
Volume
29
Category
Article
ISSN
0538-8066

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โœฆ Synopsis

The gas-phase pyrolysis of 3-chloroquadricyclane [1] was investigated over the temperature range 513-550 K at one atm in helium. The initial pyrolysis step is the isomerization of 3-chloroquadricyclane to 7-chloronorbornadiene (E ฯญ 39.63 ฯฎ 1.40 kcal/mole, a 7-chloronorbornadiene rearranges (623-660 K) to exclusively produce log A ฯญ 15.18 ฯฎ 0.58). benzyl chloride ( , log A ฯญ 15.82 ฯฎ 0.38). This two step mechanism E ฯญ 48.05 ฯฎ 1.10 kcal/mole a affords fewer reactions than the unsubstituted quadricyclane system in the gas phase. The production of a benzene derivative from the chlorinated norbornadiene is a reaction pathway contained in the unsubstituted norbornadiene and other 7-substituted pyrolysis mechanisms.

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