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Which of the following reagent sets can be used to convert propene into 1-propanol?

1. H2O in the presence of H2SO4
2. Aqueous KOH
3. MgSO4 followed by NaBH4/H2O
4. B2H6, then H2O2 and OH−

Correct answer: B2H6, then H2O2 and OH−

Solution

Converting propene to the primary 1-propanol requires anti-Markovnikov hydration: hydroboration-oxidation (B2H6 then H2O2/OH-). The stored MgSO4/NaBH4 route does not do this.

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