COMEDK · Chemistry · 27. Aldehydes and Ketones
The product \(X\) in the following reaction is
\(R-\mathrm{C} \equiv \mathrm{N} \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}]{\text { (i) } \mathrm{AlH}(i-\mathrm{Bu})_2} X\)
- A \(\mathrm{R}-\mathrm{CHO}\)
- B RCOOH
- C \(\mathrm{RCH}_2 \mathrm{NH}_2\)
- D \(\mathrm{RCONH}_2\)
Answer & Solution
Correct Answer
(A) \(\mathrm{R}-\mathrm{CHO}\)
Step-by-step Solution
Detailed explanation
Due to bulky isobutyl group, \(\mathrm{AlH}(i-\mathrm{Bu})_2\) reduces cyanides only to \(\mathrm{CH}=\mathrm{NH}\) which upon subsequent hydrolysis with \(\mathrm{H}_2 \mathrm{O}\) gives aldehyde.
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