How is Ethyl imidazo[1,5-a]pyridine-8-carboxylate (CAS: 697739-12-1) typically synthesized?

Ethyl imidazo[1,5-a]pyridine-8-carboxylate (CAS: 697739-12-1) is typically synthesized via a multi-step reaction involving the condensation of imidazo[1,5-a]pyridine-8-carboxylic acid with ethylamine. This process yields the desired compound with good selectivity and yield, often requiring the use of a catalyst such as a phase transfer catalyst.