Organic Synthesis

This method involves dehydrohalogenation via an SN2 mechanism. It is a variant of the Williamson ether synthesis. In this case, an alkoxide ion intramolecularly displaces chloride. The precursor compounds are called halohydrins and can be generated through halohydration of an alkene. Starting with propylene chlorohydrin, most of the world's supply of propylene oxide arises via this route.