Silver‐Catalyzed Synthesis of Substituted Pyridine Derivatives from N‐Propargylic α‐Enamino Esters

A wide range of substituted pyridine derivatives were synthesized in moderate to good yields from N‐propargylic α‐enamino esters. The synthetic strategy involved regioselective addition of a propargylamine to the α‐carbon atom of an alkynyl ester to produce the N‐propargylic α‐enamino ester, which acted as the key intermediate in the synthesis.