For ten points, name this functional group, a cyclic ether synthesized in reactions named for Prilezhaev and Sharpless.
A reaction that produces these functional groups reacts di- and tri-substituted alkenes in the presence of a fructose-derived catalyst and Oxone. An enantioselective method of forming these compounds utilizes a catalyst of manganese(III) bound to a salen ligand in a solution of sodium hypochlorite. In addition to the Shi and Jacobsen reactions, these compounds can also be synthesized by reacting carbonyls with sulfonium ylides [ILL - ids]. Chiral ones are stereoselectively produced from (*) allylic alcohols by using a specific diastereomer of tartrate diester. This functional group, whose nitrogen-analogue is an aziridine, can be produced by reacting alkenes with a peroxyacid, like mCPBA, in a reaction that proceeds through a "butterfly-mechanism". For ten points, name this functional group, a cyclic ether synthesized in reactions named for Prilezhaev and Sharpless.
A reaction that produces these functional groups reacts di- and tri-substituted alkenes in the presence of a fructose-derived catalyst and Oxone.
epoxides [Accept oxiranes and epoxidation reactions. Prompt on Epoxy-]