How is 5,7-Dichloroisoquinoline (CAS: 73075-58-8) typically synthesized?

5,7-Dichloroisoquinoline is typically synthesized via condensation reactions, such as the Claisen condensation of 7-chloroisoquinoline with acetyl chlorides. The reaction is carried out in the presence of a base like triethylamine, and the use of appropriate catalysts can improve yield and selectivity. The process requires careful temperature control to ensure product formation and minimize side reactions.