How is 1,2-Dimethoxy-12-methyl[1,3]benzodioxolo[5,6-c]phenanthridin-12-ium 13-methyl[1,3]benzodioxolo[5,6-c][1,3]dioxolo[4,5-i]phenanthridin-13-ium chloride (CAS: 112025-60-2) typically synthesized?

This compound is typically synthesized through a multi-step process involving the coupling of appropriate precursors. Commonly, it is synthesized from benzodioxolo[5,6-c]phenanthridine derivatives using palladium catalysis under microwave conditions. The reaction is known to have good selectivity and yield, with the final step involving hydrochloric acid treatment to form the chloride salt.