The reduction of an amide using LAH yields a primary amine . I looked up the mechanism over here.
The mechanism suggests that the final main product (amine) is produced before giving the products a water bath (hydrolyze) .
- So why do we need to add water at the end of the reaction?
This page's last paragraph suggests that 4[H] are required for the reaction.
- Two [H] are used up to make the amine (according to the mechanism), so what happens to the other two nascent hydrogens?