Question

Compound reacting with alkaline $ KMn{{O}_{4}} $

• A. $CH_3 - \underset{\overset{|}{C}H_3}{\overset{\underset{|}{O}H}{C}} - CH_3 $
• B. $ CH_3 - \overset{\underset{|}{O}H}{C}H - CH_3$
• C. $(CH_3)_3C - CH_2OH$
• D. none of the above

Answer 1

Answer: (B)

Only $1^{\circ}$ and $2^{\circ}$ alcohol are oxidised by alkaline $KMnO _{4} .3^{\circ}$ alcohols do not react with alkaline $KMnO _{4}$
$\underset{2^{\circ} \text{alcohol}}{CH_3 - \overset{\underset{|}{O}H}{C}H- CH_3} \ce{->[\text{Alk.} KMnO_4]} \underset{\text{ketone}}{CH_3 - \overset{\underset{||}{O}}{C} - CH_3}$
$\ce{->[\text{Alk.}KMnO_4]} \underset{\text{acid}}{CH_3COOH}$