SATHEE: Alcohols Phenols and Ethers

Alcohols Phenols and Ethers - Result Question 22

####22. Propene, $C H_{3} C H = C H_{2}$ can be converted into 1 -propanol by oxidation. Indicate which set of reagents amongst the following is ideal to effect the above conversion?

[1989]

(a) $K M n O_{4}$ (alkaline)

(b) Osmium tetraoxide $(O s O_{4} / C H_{2} C l_{2})$

(d) $O_{3} / Z n$

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Solution:

(c) $K M n O_{4}$ (alkaline) and $O s O_{4} / C H_{2} C l_{2}$ are used for hydroxylation of double bond while $O_{3}$ $/ Z n$ is used for ozonolysis. Therefore, the right option is (c), i.e.,

$\begin{aligned} 3 C H_{3} C H = & C H_{2} \overset{B H O H_{2} in THF}{\to} (C H_{3} C H_{2} C H_{2})_{3} B \\ \underset{\begin{array}{c} 1-propanol \end{array}}{3 H_{2} O_{2}} 3 C H_{3} C H_{2} C H_{2} O H + H_{3} B O_{3} \end{aligned}$

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Alcohols Phenols and Ethers - Result Question 22

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