Question

The steps involved in the conversion of propan -$2$-ol to propan -$1$-ol are in the order

• A. Dehydration, addition of HBr, heating with a KOH
• B. Heating with $PCl_5$, heating with alc. KOH, acid catalysed addition of water
• C. Heating with $PCl_5$, heating with alc. KOH, hydroboration oxidation
• D. Dehydration, addition of HBr in presence of peroxide, heating with alc. KOH

Hint:

The conversion of propan-2-ol to propan-1-ol involves the following steps:

1. Heating with PCl₅ When propan-2-ol is heated with PCl₅, it undergoes substitution to form propene (\( C_3H_6 \)) by elimination of HCl.
2. Heating with alcohol KOH Heating with alcoholic KOH leads to the formation of propene through elimination (dehydration) by an E2 mechanism.
3. Acid-catalyzed addition of water The final step involves the acid-catalyzed addition of water to the propene, which results in the formation of propan-1-ol.

Thus, the correct sequence of reactions to convert propan-2-ol to propan-1-ol is (C), heating with PCl₅, followed by heating with alcoholic KOH, and then acid-catalyzed addition of water. 

Answer 1

The Correct Option is C

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