Chemistry - Hydrocarbon Question with Solution | TestHub
In the following sequence of reactions, what is the end product ''?
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Solution:
The reaction of cyclohexyl methyl ketone with at converts the carbonyl group into a geminal dichloride. The product X is 1-cyclohexyl-1,1-dichloroethane.
Treatment of the gem-dichloride X with the strong base causes double dehydrohalogenation, forming a terminal alkyne. The subsequent acidic workup with protonates the intermediate sodium acetylide to give cyclohexylacetylene as product Y.
Hydroboration-oxidation of the terminal alkyne Y using followed by results in the anti-Markovnikov addition of water across the triple bond. This initially forms an enol, which rapidly tautomerizes to the corresponding aldehyde. The final product Z is cyclohexylacetaldehyde, which consists of a cyclohexyl ring attached to a group.
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