How is Ethyl 2-amino-5-chloronicotinate (CAS: 169495-51-6) typically synthesized?

Ethyl 2-amino-5-chloronicotinate (CAS: 169495-51-6) is typically synthesized by the reaction of nicotinic acid with ethylamine in the presence of a catalyst such as anhydrous aluminum chloride. The reaction yields a mixture that is purified by recrystallization. The process involves the introduction of an amino group and a chlorine atom to the nicotinic acid structure.