19. Aldehydes and Ketones:Nucleophilic Addition
DIBAL
Multiple Choice
Multiple ChoiceWhy can't ester reduction with lithium aluminum hydride (LAH, LiAlH4) stop at the aldehyde stage?
A
An aldehyde is inherently a more reactive functional group than an ester and will react preferentially over an ester when in competition.
B
The reaction with lithium aluminum hydride could stop at the aldehyde stage if the stoichiometry of the hydride reagent is carefully controlled.
C
The boiling point of the ester functional group is much higher than the boiling point of the corresponding aldehyde functional group.
D
The aldehyde functional group contains a good electron-donating group through resonance, causing the aldehyde to react faster.
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