Abstract
The gas-phase pyrolysis of 1-chloro-1-fluoro-2-vinylcyclopropane and 1-chloro-1-fluoro-2-methyl-2-vinylcyclopropane at 305–360 °C afforded 4-chloro-4-fluorocyclopentenes and chlorofluorobutadienes as a result of competitive vinylcyclopropane–cyclopentene rearrangement and cyclopropyl–allyl isomerisation.
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