What alkene gives the product shown after reaction first...

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Key Concepts

Ozonolysis Reaction

Ozonolysis is a reaction in which ozone (O?) cleaves the carbon–carbon double bond in alkenes. This reaction produces intermediates that are then converted, yielding carbonyl compounds such as aldehydes or ketones. It is widely used in organic synthesis to break a double bond cleanly and predictably.

Mechanism of Ozonolysis

The mechanism of ozonolysis starts with the attack of ozone on the alkene to form a cyclic molozonide, which then rearranges to form a more stable ozonide. This intermediate is subsequently fragmented during the work-up stage to produce carbonyl compounds. The process involves well-defined steps that collectively allow for the selective cleavage of the alkene.

Reductive Work-Up with Dimethyl Sulfide

Dimethyl sulfide (Me?S) is used as a reducing agent in the final step of ozonolysis. After the formation of the ozonide, treatment with dimethyl sulfide reduces the ozonide intermediate, preventing the formation of potentially unstable peroxides, and yields the final, stable carbonyl compounds. This reductive work-up is crucial for ensuring a clean and controlled reaction outcome.

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