1-benzylpiperidine-4-carboxamide

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:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2.43 g 2-chlorocyclohexanone and 1 g 1-benzylpiperidine-4-carboxylic acid amide (see WO2005/61483) is heated to 160° C. in the microwave until there is no further reaction. The product is purified by chromatography. 963 mg of the product are obtained. Analytical HPLC-MS (method B): RT=1.28 min. no further reaction The product is purified by chromatography

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 85.5 g of benzyl bromide are added dropwise at RT to a mixture of 58.2 g of isonipecotamide and 69 g of K2CO3 in 275 ml of DMF and the reaction mixture is stirred for 2 hours at 50° C. It is concentrated under vacuum, the residue is taken up with water and extracted with DCM, the organic phase is washed with water and dried over Na2SO4 and the solvent is evaporated off under vacuum to give 62 g of the expected product after crystallization from 300 ml of water and drying under vacuum. It is concentrated under vacuum extracted with DCM the organic phase is washed with water dried over Na2SO4 the solvent is evaporated off under vacuum

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: 7 g 1-benzyl-piperidine-4-carboxylic acid amide and 13 mL 3-chlorobutan-2-on were stirred 6 h at 180° C. under microwave conditions. The mixture was diluted in methanol and n-methylpyridinone and purified by HPLC to give 1.48 g of the desired product. n-methylpyridinone and purified by HPLC

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

Procedure: 10.2 mL benzylchloride was added to 10 g piperidine-4-carboxylic acid amide and 21.6 g potassiumcarbonate in 280 mL DMF at 5° C. The reaction was stirred over night at RT. The solvent was removed and the residue was dissolved in water and dichlormethane. The organic layer was separated and evaporated. The residue was purified by column chromatographie (silica gel, eluent: dichlormethane/methanol 95:5 to 90:10) to give 9.8 g of the desired product. The solvent was removed the residue was dissolved in water The organic layer was separated evaporated The residue was purified by column chromatographie (silica gel, eluent: dichlormethane/methanol 95:5 to 90:10)

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 85.5 g of benzyl bromide are added dropwise at RT to a mixture of 58.2 g of isonipecotamide and 69 g of K2CO3 in 275 ml of DMF and the reaction mixture is stirred for 2 hours at 50° C. It is concentrated under vacuum, the residue is taken up with water and extracted with DCM, the organic phase is washed with water and dried over Na2SO4 and the solvent is evaporated off under vacuum to give 62 g of the expected product after crystallization from 300 ml of water and drying under vacuum. It is concentrated under vacuum extracted with DCM the organic phase is washed with water dried over Na2SO4 the solvent is evaporated off under vacuum