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Which reagent reduces esters to aldehydes without further reduction?
ASodium in ethanol
BLiAlH4 at reflux
CZn-Hg with conc. HCl
DDIBAl-H at 195 K
Answer & Solution
Correct answer: D. DIBAl-H at 195 K
Diisobutylaluminium hydride at about 195 K stops reduction at the aldehyde stage, whereas stronger hydrides go on to alcohols.
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