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4801-58-5, 4801-58-5 Piperidin-1-ol 20935, apiperidines compound, is more and more widely used in various fields.

4801-58-5, Piperidin-1-ol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 3; 2-(1 -hvdroxypiperidin-2-yl)-5, -dimethylcvclohexane-1 ,3-dione:; A mixture of N-hydroxypiperidine (1 .01 g, 10 mmol), azodicarbonamide (1 .39 g, 12 mmol) and methanol (10 ml) was heated to reflux for 50 minutes. During this period the solid, initially orange in colour, changed into a whitish precipitate. After cooling to ambient temperature, said precipitate was separated by suction and washed twice with methanol (2 x 5 ml). All the methanol fractions were combined and under agitation 5, 5-dimethylcyclohexane-1 ,3-dione (10 mmol) was added. After 10 minutes, the methanol was removed under vacuum (water bath temperature 50QC) to give a crude compound of formula (3). This crude compound was dissolved in a methanol solution (15 ml) containing acetyl chloride (0.86 g, 1 1 mmol). The methanol was removed under vacuum and the residue of formula (3) in hydrochloride form was ground in acetone.Yield: 62%Formula: C13H22CINO3MW: 275.8 g/molAcid dissociation constants: pKai = 3.47, pKa2 = 6.92 m.p.: 174.5-175.5QC1H-NMR (DMSO-c/e): delta 0.98 (6H, s), 1.48 (1H, m), 1.66 (2H, d, J=12.5 Hz), 1.83 (2H, broad s), 1.94-2.07 (1H, m), 2.33 (4H, broad s), 3.23 (1H, broad s), 3.67 (1H, d, J=11.0 Hz), 4.36 (1 H, d, J=11.5 Hz), 10.93 (1 H, broad s), 11.32 (1 H, broad s). 13C-NMR (DMSO-c/e): delta 21.9, 23.6, 27.9, 28.7, 32.0, 46.2 (broad), 59.4, 64.4, 107.4.

4801-58-5, 4801-58-5 Piperidin-1-ol 20935, apiperidines compound, is more and more widely used in various fields.

Reference:
Patent; ABIOGEN PHARMA S.p.A.; NAPOLITANO, Elio; BASAGNI, Simone; TRASCIATTI, Silvia; WO2011/76930; (2011); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem