Patent ID: 6335455
Filing Date: 2002-01-01
Classification: C07D

Abstract:
A process for the isomerization of &ggr;,&dgr;-epoxyalkenes or &ggr;,&dgr;-epoxycycloalkenes to 2,5-dihydrofurans, which process comprises contacting a &ggr;,&dgr;-epoxyalkene or &ggr;,&dgr;-epoxycycloalkene with a catalytic amount of an organotin (IV) compound selected from hydrocarbytin iodides, dihydrocrbyltin iodides, trihydrocarbyltin iodides, and tetrahydrocarbytin compounds in combination with an alkali metal iodide at conditions effective to produce a 2,5-dihydrofuran compound.