4-amino-1-methyl-4-Piperidinemethanol

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Lithium aluminum hydride powder (15.62 g., 0.412 mole) in dry tetrahydrofuran (THF) (600 ml.) was heated under reflux for 15 minutes, after which 4-amino-1-methylpiperidine-4-carboxylic acid (31.0 g., 0.196 mole) in the form of a dry powder was added portionwise under nitrogen, with efficient stirring. After the addition was completed, the reaction mixture was heated under reflux for four hours, cooled to 0° C. under nitrogen with efficient stirring, worked up by careful slow addition of water (20 ml.), 15% aqueous NaOH (20 ml.) and again water (10 ml.). The reaction mixture was filtered and the precipitate was extracted with boiling THF (3 ×150 ml.). The THF liltrate and the extracts were combined and the solvent removed at 25 mm to give a yellow viscous oil (28.0 g., 98.9% yield). under reflux for 15 minutes After the addition the reaction mixture was heated under reflux for four hours The reaction mixture was filtered the precipitate was extracted with boiling THF (3 ×150 ml.) the solvent removed at 25 mm to give a yellow viscous oil (28.0 g., 98.9% yield)

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

实验步骤: 4-amino-4-hydroxymethyl-1-methylpiperidine (2.95 g, 0.02 mole), potassium carbonate (6.5 g, 0.047 mole) and acetic anhydride (8.5 g, 0.08 mole) in methanol were mixed at room temperature for two hours. Sodium hydroxide was added for neutralization and the solution extracted with chloroform. After evaporation the white solid obtained was crystallized with warm acetone affording 4-acetamido-4-hydroxymethyl-1-methylpiperidine (1.67 g, 0.009 mole, 45% yield). the solution extracted with chloroform After evaporation the white solid obtained was crystallized with warm acetone

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Lithium aluminum hydride powder (15.62 g., 0.412 mole) in dry tetrahydrofuran (THF) (600 ml.) was heated under reflux for 15 minutes, after which 4-amino-1-methylpiperidine-4-carboxylic acid (31.0 g., 0.196 mole) in the form of a dry powder was added portionwise under nitrogen, with efficient stirring. After the addition was completed, the reaction mixture was heated under reflux for four hours, cooled to 0° C. under nitrogen with efficient stirring, worked up by careful slow addition of water (20 ml.), 15% aqueous NaOH (20 ml.) and again water (10 ml.). The reaction mixture was filtered and the precipitate was extracted with boiling THF (3×15 ml.). The THF filtrate and the extracts were combined and the solvent removed at 25 mm to give a yellow viscous oil (28.0 g., 98.9% yield). IR (neat) 3320 (NH), 3200 (br. OH), 1587 (NH2), 1468, 1448 cm-1 under reflux for 15 minutes After the addition the reaction mixture was heated under reflux for four hours The reaction mixture was filtered the precipitate was extracted with boiling THF (3×15 ml.) the solvent removed at 25 mm to give a yellow viscous oil (28.0 g., 98.9% yield)

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

实验步骤: 4-amino-4-hydroxymethyl-1-methylpiperidine (2.95 g, 0.02 mole), potassium carbonate (6.5 g, 0.047 mole) and acetic anhydride (8.5 g, 0.08 mole) in methanol were mixed at room temperature for two hours. Sodium hydroxide was added for neutralization and the solution extracted with chloroform. After evaporation the white solid obtained was crystallized with warm acetone affording 4-acetamido-4-hydroxymethyl-1-methylpiperidine (1.67 g, 0.009 mole, 45% yield). the solution extracted with chloroform After evaporation the white solid obtained was crystallized with warm acetone