ethyl 2-piperidin-4-ylacetate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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. was heated under reflux for 16 hours evaporated The residue was partitioned between ethyl acetate and water the organic layer was washed with water dried over magnesium sulphate evaporated The residue was purified by chromatography on SiO2 evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-phenyl-α,α-dimethyl-β-alanine (1.0 g, 3.10 mmol) using ethyl 4-piperidine acetate (1.59 g, 9.31 mmol) to yield an oil of N-4-cyanobenzoyl-β-phenyl-α,α-dimethyl-β-alanyl-4-piperidineacetic acid ethyl ester (0.96 g, 65.1%).

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir: