How are epoxides made from alkenes using peroxyacids?

Epoxides are cyclic ethers containing a three-membered ring with one oxygen atom attached to two adjacent carbon atoms. On a laboratory scale, they are typically synthesized through the epoxidation of alkenes using a peroxyacid (represented by the general formula $RC{O}_{3}H$).12

In this reaction, the peroxyacid acts as an oxidizing agent, transferring an oxygen atom directly to the alkene to form the epoxide ring. Peroxyacids are characterized by the presence of the $-\text{O}-\text{O}-\text{H}$ group, which replaces the $-\text{O}-\text{H}$ group found in standard oxy acids. Because of the strain inherent in the three-membered ring, the resulting epoxides are significantly more reactive than typical acyclic ethers, making them valuable intermediates for various chemical transformations.13