1,7-Sigmatropic shifts of the phenylsulfanyl group along the perimeter of the cycloheptatriene ring.
Abstract
Rapid and reversible migrations of the phenylsulfanyl group around the seven-membered ring of 7-phenylsulfanylcyclohepta-1,3,5-triene have been proved to proceed through successive 1,7-sigmatropic shifts with an energy barrier (ΔG298 in the range of 19.5-20.1kcal mol -1.