What is the direct product of the base-promoted hydrolysis of an ester?

What type of esters can undergo Claisen reactions?

Would this crossed Aldol reaction work well? Why or why not?

Which of the following is (are) a keto-enol tautomeric pair(s)?

Rank the following compounds in order of decreasing acidity, putting the most acidic first.

Predict the product for the following reaction.    

Predict the product for the following reaction sequence.       

Which one of the following is the most reactive Michael acceptor?  

What product is formed when N-methylbenzamide reacts with sodium propanoate?

The Robinson annulation reaction is shown below. Identify the missing reagent in the first step.