Allyl alkyl sulfones undergo thermal rearrangement to afford alkenes and sulfur dioxide. Details of the mechanism were investigated by studying the thermolysis of allyl see-butyl sulfone (1). Gas-phase pyrolysis of 1 afforded propene, butenes, isopentane, l, &hexadiene, and 4-methyl-1-hexene (3) as major products. The activation energy for the process was determined to be 41.4 f 2.3 kcal/mol in the temperature range 220-272" C. As the ...
