6. Provide reagents or intermediates for the multistep synthesis below. The solid boxes needs reagents, the dashed boxes need intermediates. More than one reagent or step may be necessary over any one arrow.
Intermediate 1
Intermediate 2
Also need a
base?
$CO_2Et$
$H_3O^+$
$NaOH$,
heat
heat
$CO_2H$
b) What type of reaction is this from intermediate 1 and 2 to the final product?