How is Dimethyl 4-(2,3-dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate (CAS: 91189-59-2) typically synthesized?

This compound is typically synthesized via a multistep process involving the substitution of a phenyl group with dichloro substituents followed by the formation of the 1,4-dihydropyridine ring and the introduction of dimethyl esters. Common catalysts include Lewis acids, and the reaction conditions are optimized for selectivity and yield. Detailed procedures can be found in the literature.