How is 2-[(1-Benzyl-1-oxido-4-piperidinyl)methyl]-5,6-dimethoxy-1-indanone (CAS: 120013-84-5) typically synthesized?

2-[(1-Benzyl-1-oxido-4-piperidinyl)methyl]-5,6-dimethoxy-1-indanone is typically synthesized via a multi-step process involving alkylation, condensation, and methylation reactions. The key steps include the preparation of the 1-benzyl-1-oxido-4-piperidinyl methyl compound, followed by its reaction with 5,6-dimethoxy-1-indanone in the presence of a suitable catalyst. The final product is obtained with high selectivity and yield, often through techniques like recrystallization and column chromatography.