Question

\[\ce{A ->[HCN] B ->[Dil.HCl/\Delta] 2-Hydroxy-3, 3-dimethylbutanoic acid}\]

Reactant 'A' is ____________.

पर्याय

• 3-methylbutanal

• 2-methylpropanal

• 2, 3-dimethylbutanal

• 2, 2-dimethylpropanal

Answer 1

\[\ce{A ->[HCN] B ->[Dil.HCl/\Delta] 2-Hydroxy-3, 3-dimethylbutanoic acid}\]

Reactant 'A' is 2, 2-dimethylpropanal.

Explanation:

\[\begin{array}{cc}
\phantom{..............}\ce{CH3}\phantom{}\ce{O}\phantom{.................}\ce{CH3}\phantom{..}\ce{OH}\phantom{...................}\ce{CH3}\phantom{.}\ce{OH}\phantom{..............}\\
\phantom{.........}|\phantom{....}||\phantom{..................}|\phantom{.....}|\phantom{......................}|\phantom{.....}|\phantom{...........}\\
\ce{CH3 - C - C - H ->[HCN] CH3 - C - C - CN ->[Dil. HCl][\Delta] CH3 - C - C - COOH}\\
\phantom{.........}|\phantom{.......................}|\phantom{.....}|\phantom{......................}|\phantom{.....}|\phantom{...........}\\
\phantom{}\ce{\underset{\underset{(A)}{2,2-Dimethylpropanal}}{CH3} \phantom{.............}\underset{(B)}{CH3}\phantom{..}H}\phantom{................}\ce{\underset{\underset{butanoic acid}{2-Hydroy-3, 3-dimethyl}}{CH3\phantom{.}H}}\phantom{...}
\end{array}\]