In the reaction below, the hydrolysis is coupled to the decarboxylation reaction. Suggest a mechanism for this reaction. Ignore stereochemistry.

Decarboxylation of esters can alternatively be conducted under basic conditions. Propose a mechanism for the reaction shown below. [Hint: The formation of chloromethane proceeds by an S_N2 reaction.]

Which compound(s) below can undergo decarboxylation?

Metal ions can increase the rate of decarboxylation for certain compounds. Explain how this catalysis occurs.