All the following questions concern ethyl (2-oxocyclohexane)carboxylate.(a) Write a chemic...

All the following questions concern ethyl (2-oxocyclohexane)carboxylate.

(a) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)carboxylate by a Dieckmann cyclization.

(b) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)carboxylate by acylation of a ketone.

(c) Write structural formulas for the two most stable enol forms of ethyl (2-oxocyclohexane)carboxylate.

(d) Write the three most stable resonance contributors to the most stable enolate derived from ethyl (2-oxocyclohexane)carboxylate.

(e) Show how you could use ethyl (2-oxocyclohexane)carboxylate to prepare 2-methylcyclohexanone.

(f) Give the structure of the product formed on treatment of ethyl (2-oxocyclohexane)-carboxylate with acrolein  in ethanol in the presence of sodium ethoxide.