Category: 324769-03-1

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.324769-03-1,(3S,5R)-1-Benzyl-3,5-dimethylpiperidin-4-one,as a common compound, the synthetic route is as follows.

Phenyllithium in diisopropyl ether (2 M, 34.5 mL, 690 mmol) was added dropwise to a stirred solution of (3R,5S)-1-benzyl-3,5-dimethylpiperidin-4-one, from preparation 14 (10.0 g, 46 mmol) in anhydrous diethyl ether (150 mL) at -78 C. The mixture was stirred for a further 30 minutes at -78 C., before saturated aqueous ammonium chloride solution (10 mL) was added and the mixture was allowed to warm to room temperature. The organic layer was separated, washed with water (3¡Á200 mL) and dried over sodium sulfate, and then filtered. The solvent was then evaporated to give the crude (3R,4s,5S)-1-benzyl-3,5-dimethyl-4-phenylpiperidin-4-ol (12.8 g) as a white solid. The crude compound was >95% pure by 1H NMR and used directly in preparation 21. LC-MS (ESI+): 296 (M+H); 11H NMR (400 MHz, CD3OD) delta 0.51 (d, 6H), 2.18 (m, 2H), 2.30 (m, 2H), 2.42 (m, 2H), 3.6 (s, 2H), 7.15 (m, 1H), 7.35 (m, 9H)., 324769-03-1

As the paragraph descriping shows that 324769-03-1 is playing an increasingly important role.

Reference£º
Patent; Pfizer Inc; US2005/176772; (2005); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.324769-03-1,(3S,5R)-1-Benzyl-3,5-dimethylpiperidin-4-one,as a common compound, the synthetic route is as follows.

(3R,5S)-1-Benzyl-3,5-dimethyl-piperidin-4-one (from preparation 14) was dissolved in ethanol (200 mL) and di-tert-butyl dicarbonate (5.08 g, 23 mmol) was added, followed by palladium hydroxide on carbon (20% on carbon, 200 mg) and the reaction mixture placed under 40 atmosphere pressure of hydrogen and stirred overnight at room temperature. The reaction mixture was then filtered through a pad of Celite and Arbocel and concentrated in vacuo to afford a yellow oil which crystallised on standing to afford the title compound (5.2 g, 90%) of sufficient purity to use directly in the next stage (preparation 10). 1H NMR (400 MHz, CDCl3) delta 1.03 (6H, d), 1.49 and 1.52 [9H, 2¡Ás (Rotamers)], 2.48-2.76 (4H, m), 4.24-4.53 (2H, m).

324769-03-1, The synthetic route of 324769-03-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Pfizer Inc; US2005/176772; (2005); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem