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A mixture of ethyl piperidine-4-acetate (0.34 g, 2.0 mmol), 3,4-methylenedioxybenzyl chloride (0.34 g, 2.0 mmol), sodium carbonate (1.0 g) and sodium iodide (0.10 g) in acetonitrile (30 ml) was heated under reflux for 16 hours and evaporated. The residue was partitioned between ethyl acetate and water and the organic layer was washed with water, dried over magnesium sulphate and evaporated. The residue was purified by chromatography on SiO2 using dichloromethane plus 0-20% ethyl acetate as eluant. Appropriate fractions were combined and evaporated to give the title compound (0.52 g) as a colourless oil which was characterised by its 1H-NMR spectrum.

1. temperaturewas heated
2. temperatureunder reflux for 16 hours
3. customevaporated
4. customThe residue was partitioned between ethyl acetate and water
5. washthe organic layer was washed with water
6. dry with materialdried over magnesium sulphate
7. customevaporated
8. customThe residue was purified by chromatography on SiO2
9. customevaporated