allylic alcohol only.homoallylic alcohol can also be reactive using some more active metal.
Jacobsen epoxidation
not limited to allylic alcohol, tetra-sub alkene gives low ee.
Shi epoxidation

Sulfur Ylide Epoxidation

cordova's epoxidation
taber's mandelic acid approach
based on column separation of two mandelic ester diasteromers.Works on Terminal alkenes.
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