What happens when alkenes are oxidized?

Question

Santiago Alfonso · Accepted Answer

Alkenes are oxidised to give carbonyl compounds or carboxylic acids depending upon the condition.

So ozonolysis is an example of oxidative cleavage reaction that leads to the breaking #"C"-"C"# double bond on oxidation. There are two types of it

Oxidative ozonolysis

Reductive ozonolysis

Let me begin with oxidative ozonolysis. In this reaction, #"C"="C"# is broken to give oxygen at each of the broken carbon. In case of this reaction when workup is done with #"H"_2"O"_2# each of the oxygen is oxidized to give carboxylic acid at each of the carbon.

Now taking the second condition, i.e reductive ozonolysis.
In this case, oxygen is oxidized to intermediate form i.e carbonyl compound. The reductive workup is done with #"Zn"# or #"S"("CH"_3)_2#.

Hope it helps!!

Isabella Acosta · Answer

undefined When alkenes are oxidized, they undergo addition reactions with oxygen. This typically involves the formation of an epoxide or diol. The most common method of alkene oxidation is with potassium permanganate (KMnO4) or osmium tetroxide (OsO4), which adds two oxygen atoms across the double bond to form a diol. In some cases, the alkene may be cleaved to form carbonyl compounds such as aldehydes or ketones. The specific product formed depends on the reaction conditions and the structure of the alkene.