Prochiral version of these compounds are changed to 1,2-diols with a oxidant like NMO and an osmium 
Prochiral version of these compounds are changed to 1,2-diols with a oxidant like NMO and an osmium tetroxide catalyst in a reaction named for Sharpless. A zinc-copper catalyst is used in a reaction where a carbene and this type of compound form cyclopropane. Another reaction that uses them has a step where hydrogen peroxide oxidizes the compound formed after the addition of another substance dissolved in THF; that reaction results in alcohol. They are used in the Simmons-Smith reaction and alkyl halides react with triphenylphosphine to form an (*) ylide reagent that is combined with a carbonyl to create these compounds. Their simplest form is a hormone in plants and they undergo hydroboration, which is an anti-Markovnikov process. The E-Z notation extends cis-tran isomerism in them. For 10 points, name this functional group created in the Wittig reaction that have at least one carbon-carbon double bond.
Prochiral version of these compounds are changed to 1,2-diols with a oxidant like NMO and an osmium tetroxide catalyst in a reaction named for Sharpless.