How is Ethyl hydratropate (CAS: 2510-99-8) typically synthesized?

Ethyl hydratropate (CAS: 2510-99-8) is commonly synthesized by the nucleophilic substitution of troponium ions with ethoxide ion. The reaction is typically carried out in a solvent like ethanol or dimethylformamide at room temperature, with a yield of around 80-90%. The use of a base like potassium ethoxide is essential for high selectivity and yield.