With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.297172-16-8,(4-Methylpiperidin-4-yl)methanol,as a common compound, the synthetic route is as follows.
Example 76 (Preparation of Compound 77) A mixture of 4-fluoro-1-naphthonitrile (200 mg) (4-methyl-4-piperidinyl) methanol (242 mg), potassium carbonate (332 mg) and dimethylsulfoxide (3.0 mL) was stirred at 100C for 3 hours. After cooling to room temperature, the reactant was poured into water and extracted with ethyl acetate. The extracts were washed with water, dried and concentrated. The obtained residue was purified by silica gel column chromatography to obtain 4-[4-(hydroxymethyl)-4-methyl-1-piperidinyl]-1-naphthonitrile (256 mg) (Compound 77). mp 136 – 137C. 1H-NMR (300 MHz, CDCl3) delta: 1.10 (3H, s), 1.48 (1H, t, J=6.0 Hz), 1.55-1.61 (2H, m), 1.90 (2H, ddd, J=13.2, 10.2 and 4.2 Hz), 3.04-3.12 (2H, m), 3.24-3.31 (2H, m), 3.53 (2H, d, J=6.0 Hz), 7.04 (1H, d, J=8.1 Hz), 7.57 (1H, ddd, J=8.1, 6.9 and 1.5 Hz), 7.65 (1H, ddd, J=8.1, 6.9 and 1.5 Hz), 7.83 (1H, d, J=8.1 Hz), 8.15-8.21 (2H, m). IR (KBr) 2216, 1574 cm-1, 297172-16-8
As the paragraph descriping shows that 297172-16-8 is playing an increasingly important role.
Reference：
Patent; Takeda Pharmaceutical Company Limited; EP1553074; (2005); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem