What products would you expect from reaction of...

What products would you expect from reaction of 1-methylcyclohexene with the following reagents?
(a) Aqueous acidic $\mathrm{KMnO}_{4}$
(b) $\mathrm{O}_{3},$ followed by $\mathrm{Zn}, \mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}$

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Key Concepts

Syn Dihydroxylation

Under aqueous neutral or slightly acidic conditions, potassium permanganate (KMnO4) adds two hydroxyl groups across the carbon–carbon double bond in a syn fashion (coming from the same side). This reaction converts alkenes into vicinal diols. The stereochemistry of the addition is important because both –OH groups end up on the same face of the alkene, and the substitution on the alkene (which carbons have only carbon substituents versus hydrogens) influences the regiochemical outcome.

Ozonolysis of Alkenes

Ozonolysis involves the cleavage of carbon–carbon double bonds using ozone with a subsequent reductive workup (such as Zn/CH3CO2H) to yield carbonyl compounds. Each carbon of the original alkene is transformed into either an aldehyde or a ketone, depending on its substituents. Typically, if an alkene carbon bears a hydrogen, the product is an aldehyde; if it is fully substituted with carbons, a ketone is formed. This reaction is a powerful tool for breaking rings and opening carbon skeletons in synthetic organic chemistry.

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