Question: Explain why low temperatures are used in the reaction. - include the possible products that can form if the high temperature was used. How is

Explain why low temperatures are used in the reaction.

- include the possible products that can form if the high temperature was used.

How is deprotonation of the carbonate anion prevented? What reaction conditions were used to prevent this?
$1) 4-methylvaleric acid, THF, ( mathrm{Et}_{3} mathrm{~N} ), Pivaloyl chloride, ( 0^{circ} mathrm{C} ) 2) n-BuLi, THF$

O O (S) (1) 1) 4-methylvaleric acid, THF, Et3N, Pivaloyl NH chloride, 0c 2) n-BuLi, THF, -78c step one (S) (2) N

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