Draw the reaction (with arrows) of the reaction between an aldehyde and sodium hydroxide. A hydrate...
Draw the reaction (with arrows) of the reaction between an aldehyde and sodium hydroxide. A hydrate with all single bonds will form. Don't forget to include the acid workup.
Homework Answers
Answer:
The reaction of an aldehyde with alpha-hydrogen atoms always prefers the aldol condensation reaction when it does react with NaOH which results in a Beta- hydroxy aldehyde.
In cases where there are no alpha-hydrogen atoms in the aldehyde, the said hydrate product with all single bond could still NOT form. As such addition of OH- to an aldehyde group would lead to a disproportionation reaction which is familiarly known as "Cannizaro Reaction". The following image shows both aldol condensation and Cannizaro reactions (In Cannizaro reaction, the substituent R could either H or any group that does not have an alpha-hydrogen atom).
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