1-(3-phenoxypropyl)piperidin-4-one

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone oxime is prepared from 1-(3-phenoxypropyl)-4-piperidone and hydroxylamine hydrochloride essentially as described above in Example 38, Scheme C, step b.

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone is prepared from 4-piperidone and 1-chloro-3-phenoxypropane essentially as described above in Example 38, Scheme C, step a.

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

Procedure: In a similar manner to Example 28, n-butyllithium (25.2 ml, 2.5M solution in hexanes) was added to a suspension of (2-dimethylaminoethyl)triphenylphosphonium bromide (28.7 g) in dry THF (200 ml). This mixture was then treated with a solution of 1-(3-phenoxypropyl)-4-piperidone (14.7 g) in THF (20 ml). The oil obtained after work up (6.24 g) was hydrogenated in IMS at 1 atmosphere over 10% palladium charcoal over 16 hours. The catalyst was removed by filtration. The filtrate was evaporated and the residue was dissolved in petroleum ether, b.p. 60°-80° C. The solution was dried and evaporated to give an oil which was dissolved in ether and acidified with ethereal hydrogen chloride to yield a precipitate. The precipitate was collected by filtration and recrystallised from IMS to give 4-(2-dimethylaminoethyl)-1-(3-phenoxypropyl)piperidine dihydrochloride, m.p. 294°-295° C. The oil obtained after work up (6.24 g) The catalyst was removed by filtration The filtrate was evaporated the residue was dissolved in petroleum ether The solution was dried evaporated to give an oil which to yield a precipitate The precipitate was collected by filtration recrystallised from IMS

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone oxime is prepared from 1-(3-phenoxypropyl)-4-piperidone and hydroxylamine hydrochloride essentially as described above in Example 38, Scheme C, step b.

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone oxime is prepared from 1-(3-phenoxypropyl)-4-piperidone and hydroxylamine hydrochloride essentially as described above in Example 38, Scheme C, step b.

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone is prepared from 4-piperidone and 1-chloro-3-phenoxypropane essentially as described above in Example 38, Scheme C, step a.

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone oxime is prepared from 1-(3-phenoxypropyl)-4-piperidone and hydroxylamine hydrochloride essentially as described above in Example 38, Scheme C, step b.

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone is prepared from 4-piperidone and 1-chloro-3-phenoxypropane essentially as described above in Example 38, Scheme C, step a.

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

Procedure: In a similar manner to Example 28, n-butyllithium (25.2 ml, 2.5M solution in hexanes) was added to a suspension of (2-dimethylaminoethyl)triphenylphosphonium bromide (28.7 g) in dry THF (200 ml). This mixture was then treated with a solution of 1-(3-phenoxypropyl)-4-piperidone (14.7 g) in THF (20 ml). The oil obtained after work up (6.24 g) was hydrogenated in IMS at 1 atmosphere over 10% palladium charcoal over 16 hours. The catalyst was removed by filtration. The filtrate was evaporated and the residue was dissolved in petroleum ether, b.p. 60°-80° C. The solution was dried and evaporated to give an oil which was dissolved in ether and acidified with ethereal hydrogen chloride to yield a precipitate. The precipitate was collected by filtration and recrystallised from IMS to give 4-(2-dimethylaminoethyl)-1-(3-phenoxypropyl)piperidine dihydrochloride, m.p. 294°-295° C. The oil obtained after work up (6.24 g) The catalyst was removed by filtration The filtrate was evaporated the residue was dissolved in petroleum ether The solution was dried evaporated to give an oil which to yield a precipitate The precipitate was collected by filtration recrystallised from IMS

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone oxime is prepared from 1-(3-phenoxypropyl)-4-piperidone and hydroxylamine hydrochloride essentially as described above in Example 38, Scheme C, step b.

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

Procedure: 1-(3-Phenoxypropyl)-4-piperidone is prepared from 4-piperidone and 1-chloro-3-phenoxypropane essentially as described above in Example 38, Scheme C, step a.