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Which reagent selectively reduces a nitrile to an imine that hydrolyses to an aldehyde?
ALiAlH4
BDIBAL-H
CNaBH4
DZn-Hg/HCl
Answer & Solution
Correct answer: B. DIBAL-H
Diisobutylaluminium hydride delivers only one hydride, so reduction stops at the imine stage.
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