1-(4-甲基苯甲基)哌啶-4-酮

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 2.8 mL (32 mmol) of oxalyl chloride in 75 mL of CH2Cl2 at −78° C. was added 4.6 mL (64 mmol) of DMSO. To this mixture was added 5.3 g (26 mmol) of 1-(4-methylbenzyl)-4-piperidinol 123 in 10 mL of CH2Cl2, and the mixture was stirred 5 min in the cold. The mixture was quenched with 18 mL (129 mmol) of triethylamine and allowed to come to room temperature, and saturated aqueous ammonium chloride was added. The organic phase was washed with water and brine, dried, and evaporated to give 4.27 g (81%) of 1-(4-methylbenzyl)-4-piperidinone (124), which was used as is without further purification. GC/MS showed 100% purity with a molecular ion of 203. to come to room temperature The organic phase was washed with water and brine dried evaporated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 2.8 mL (32 mmol) of oxalyl chloride in 75 mL of CH2Cl2 at −78° C. was added 4.6 mL (64 mmol) of DMSO. To this mixture was added 5.3 g (26 mmol) of 1-(4-methylbenzyl)-4-piperidinol 123 in 10 mL of CH2Cl2, and the mixture was stirred 5 min in the cold. The mixture was quenched with 18 mL (129 mmol) of triethylamine and allowed to come to room temperature, and saturated aqueous ammonium chloride was added. The organic phase was washed with water and brine, dried, and evaporated to give 4.27 g (81%) of 1-(4-methylbenzyl)-4-piperidinone (124), which was used as is without further purification. GC/MS showed 100% purity with a molecular ion of 203. to come to room temperature The organic phase was washed with water and brine dried evaporated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 4.25 g (21 mmol) of 1-(4-methylbenzyl)-4-piperidinone 124 in 200 mL of anhydrous methanol was added 32.2 g (420 mmol) of ammonium acetate and 25 g of 3A molecular sieves. After stirring 30 min, 5.25 g (84 mmol) of sodium cyanoborohydride was added portionwise. After stirring 16 hours, the mixture was gravity filtered and the methanol evaporated under vacuum. The residue was partitioned between ether and ice/HCl. The acidic aqueous layer was extracted twice with ether, made basic with 50% aqueous NaOH and ice, and extracted with CH2Cl2 to give 2.1 g (48%) of the title amine 125 as a thick oil. GC/MS showed a molecular ion of 204. The product was used as is without further purification. After stirring 16 hours filtered the methanol evaporated under vacuum The residue was partitioned between ether and ice/HCl The acidic aqueous layer was extracted twice with ether extracted with CH2Cl2

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 4.25 g (21 mmol) of 1-(4-methylbenzyl)-4-piperidinone 124 in 200 mL of anhydrous methanol was added 32.2 g (420 mmol) of ammonium acetate and 25 g of 3A molecular sieves. After stirring 30 min, 5.25 g (84 mmol) of sodium cyanoborohydride was added portionwise. After stirring 16 hours, the mixture was gravity filtered and the methanol evaporated under vacuum. The residue was partitioned between ether and ice/HCl. The acidic aqueous layer was extracted twice with ether, made basic with 50% aqueous NaOH and ice, and extracted with CH2Cl2 to give 2.1 g (48%) of the title amine 125 as a thick oil. GC/MS showed a molecular ion of 204. The product was used as is without further purification. After stirring 16 hours filtered the methanol evaporated under vacuum The residue was partitioned between ether and ice/HCl The acidic aqueous layer was extracted twice with ether extracted with CH2Cl2

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 2.8 mL (32 mmol) of oxalyl chloride in 75 mL of CH2Cl2 at −78° C. was added 4.6 mL (64 mmol) of DMSO. To this mixture was added 5.3 g (26 mmol) of 1-(4-methylbenzyl)-4-piperidinol 123 in 10 mL of CH2Cl2, and the mixture was stirred 5 min in the cold. The mixture was quenched with 18 mL (129 mmol) of triethylamine and allowed to come to room temperature, and saturated aqueous ammonium chloride was added. The organic phase was washed with water and brine, dried, and evaporated to give 4.27 g (81%) of 1-(4-methylbenzyl)-4-piperidinone (124), which was used as is without further purification. GC/MS showed 100% purity with a molecular ion of 203. to come to room temperature The organic phase was washed with water and brine dried evaporated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 2.8 mL (32 mmol) of oxalyl chloride in 75 mL of CH2Cl2 at −78° C. was added 4.6 mL (64 mmol) of DMSO. To this mixture was added 5.3 g (26 mmol) of 1-(4-methylbenzyl)-4-piperidinol 123 in 10 mL of CH2Cl2, and the mixture was stirred 5 min in the cold. The mixture was quenched with 18 mL (129 mmol) of triethylamine and allowed to come to room temperature, and saturated aqueous ammonium chloride was added. The organic phase was washed with water and brine, dried, and evaporated to give 4.27 g (81%) of 1-(4-methylbenzyl)-4-piperidinone (124), which was used as is without further purification. GC/MS showed 100% purity with a molecular ion of 203. to come to room temperature The organic phase was washed with water and brine dried evaporated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 2.8 mL (32 mmol) of oxalyl chloride in 75 mL of CH2Cl2 at −78° C. was added 4.6 mL (64 mmol) of DMSO. To this mixture was added 5.3 g (26 mmol) of 1-(4-methylbenzyl)-4-piperidinol 123 in 10 mL of CH2Cl2, and the mixture was stirred 5 min in the cold. The mixture was quenched with 18 mL (129 mmol) of triethylamine and allowed to come to room temperature, and saturated aqueous ammonium chloride was added. The organic phase was washed with water and brine, dried, and evaporated to give 4.27 g (81%) of 1-(4-methylbenzyl)-4-piperidinone (124), which was used as is without further purification. GC/MS showed 100% purity with a molecular ion of 203. to come to room temperature The organic phase was washed with water and brine dried evaporated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 4.25 g (21 mmol) of 1-(4-methylbenzyl)-4-piperidinone 124 in 200 mL of anhydrous methanol was added 32.2 g (420 mmol) of ammonium acetate and 25 g of 3A molecular sieves. After stirring 30 min, 5.25 g (84 mmol) of sodium cyanoborohydride was added portionwise. After stirring 16 hours, the mixture was gravity filtered and the methanol evaporated under vacuum. The residue was partitioned between ether and ice/HCl. The acidic aqueous layer was extracted twice with ether, made basic with 50% aqueous NaOH and ice, and extracted with CH2Cl2 to give 2.1 g (48%) of the title amine 125 as a thick oil. GC/MS showed a molecular ion of 204. The product was used as is without further purification. After stirring 16 hours filtered the methanol evaporated under vacuum The residue was partitioned between ether and ice/HCl The acidic aqueous layer was extracted twice with ether extracted with CH2Cl2

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 2.8 mL (32 mmol) of oxalyl chloride in 75 mL of CH2Cl2 at −78° C. was added 4.6 mL (64 mmol) of DMSO. To this mixture was added 5.3 g (26 mmol) of 1-(4-methylbenzyl)-4-piperidinol 123 in 10 mL of CH2Cl2, and the mixture was stirred 5 min in the cold. The mixture was quenched with 18 mL (129 mmol) of triethylamine and allowed to come to room temperature, and saturated aqueous ammonium chloride was added. The organic phase was washed with water and brine, dried, and evaporated to give 4.27 g (81%) of 1-(4-methylbenzyl)-4-piperidinone (124), which was used as is without further purification. GC/MS showed 100% purity with a molecular ion of 203. to come to room temperature The organic phase was washed with water and brine dried evaporated

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 4.25 g (21 mmol) of 1-(4-methylbenzyl)-4-piperidinone 124 in 200 mL of anhydrous methanol was added 32.2 g (420 mmol) of ammonium acetate and 25 g of 3A molecular sieves. After stirring 30 min, 5.25 g (84 mmol) of sodium cyanoborohydride was added portionwise. After stirring 16 hours, the mixture was gravity filtered and the methanol evaporated under vacuum. The residue was partitioned between ether and ice/HCl. The acidic aqueous layer was extracted twice with ether, made basic with 50% aqueous NaOH and ice, and extracted with CH2Cl2 to give 2.1 g (48%) of the title amine 125 as a thick oil. GC/MS showed a molecular ion of 204. The product was used as is without further purification. After stirring 16 hours filtered the methanol evaporated under vacuum The residue was partitioned between ether and ice/HCl The acidic aqueous layer was extracted twice with ether extracted with CH2Cl2