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In Chapter 18 we introduced the enolates of aldehydes and ketones (review) and looked at their reactions as C nucleophiles (review). These enolates were formed by treating the aldehyde or ketone with a suitable base :
Now we will investigate another group of carbonyl containing compounds, the esters, which behave in a very similar fashion.....
This avoids problems caused by transesterification (conversion of one ester into another)......
Note that in both cases the problem arises because the base reacts as a "nucleophile"
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