How is 1-(3,5-Dimethoxyphenyl)cyclobutanecarbonitrile (CAS: 339094-25-6) typically synthesized?

1-(3,5-Dimethoxyphenyl)cyclobutanecarbonitrile can be synthesized via a multistep process involving the reaction of 3,5-dimethoxybenzaldehyde with cyclobutanecarbonitrile. The synthesis typically uses a Lewis acid catalyst such as aluminum chloride to promote the condensation reaction. The yield of the product can be up to 85% with good selectivity towards the desired diastereomer.