1. Select the reagents to generate the enolate ion of malonicester while avoiding side reactions: 
2. What base can be used to convert all of the reagents belowinto their enolates without any side reaction?

~ NaOH
~ NaOEt
~ LDA
~ NH3
3. Select all the options that correctly identify the reactionbelow: Alkylation reaction, SN2 reaction, reaction of an enolatewith an alkyl bromide, nucleophilic addition.

4. Select the enol that is in equilibrium with the aldehydebelow:

5. Select the conditions that would lead to the wantedproduct:
~ 1. Br2, PBr3; 2.
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