Chemistry - ALCOHOL & ETHER Question with Solution | TestHub

Question Explanation:

Match the organic conversions with their appropriate reagents.

Concept:

Oxidation and Cleavage of Alcohols and Alkenes.

Solution:

A (Hexan-1-ol to hexanal): Primary alcohol to aldehyde requires mild oxidants like PCC (P) or catalytic dehydrogenation with $\mathrm{Cu}/300^{\circ }\mathrm{C}(\mathrm{T})$.

B (But-2-ene to ethanoic acid): Oxidative cleavage of alkenes occurs with acidic ${\mathrm{KMnO}}_4$ (Q) or oxidative ozonolysis (R).

C (Cyclohexanol to cyclohexanone): Secondary alcohol to ketone can be done by PCC (P), ${\mathrm{KMnO}}_4/{\mathrm{H}}^{+}(\mathrm{Q})$, orCu $/300^{\circ }\mathrm{C}(\mathrm{T})$.

D (Allyl alcohol to propenal): Selective oxidation of allylic alcohol to aldehyde is done by ${\mathrm{MnO}}_2(\mathrm{S}),\mathrm{PCC}(\mathrm{P})$, or $\mathrm{Cu}/300^{\circ }\mathrm{C}(\mathrm{T})$.

$\mathbf{A}\to \mathbf{P},\mathbf{T}$ (Mild oxidation)

$\mathbf{B}\to \mathbf{Q},\mathbf{R}$ (Strong oxidation/cleavage)

$\mathbf{C}\to \mathbf{P},\mathbf{Q},\mathbf{T}$ (Secondary alcohol oxidation)

$\mathbf{D}\to \mathbf{P},\mathbf{S},\mathbf{T}$ (Allylic oxidation)

Final Answer: $\mathrm{A}\to \mathrm{PT};\mathrm{B}\to \mathrm{QR};\mathrm{C}\to \mathrm{PTQ};\mathrm{D}\to \mathrm{PST}$