| abstract |
Disclosed is a continuous process for the manufacture of 2,5-dihydrofurans by the isomerization of $g(g),$g(d)-epoxyalkenes in the liquid phase in the presence of a catalyst system comprising an onium iodide compound and a Lewis acid and a process solvent comprising a mixture of the 2,5-dihydrofuran product of the process and an oligomer of the $g(g),$g(d)-epoxyalkenes reactant. |