How is Methyl 4'-[(1,7'-dimethyl-2'-propyl-1H,3'H-2,5'-bibenzimidazol-3'-yl)methyl]-2-biphenylcarboxylate (CAS: 528560-93-2) typically synthesized?

Methyl 4'-[(1,7'-dimethyl-2'-propyl-1H,3'H-2,5'-bibenzimidazol-3'-yl)methyl]-2-biphenylcarboxylate is synthesized through a multistep process involving the condensation of 2-biphenylcarboxylic acid methyl ester with a bibenzimidazole derivative. The synthesis typically requires the use of a catalyst, such as a metal complex, to promote the coupling reaction. The overall yield is moderate to good, and the method is selective for the formation of the desired product.