With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.75336-86-6,(R)-2-Methylpiperazine,as a common compound, the synthetic route is as follows.,75336-86-6
Example 1] Synthesis of compound (I-40) a) Synthesis compound 3 [Show Image] [Show Image] Under the nitrogen atmosphere, toluene (7.5 ml) was added to a commercially available compound 2 (1.50 g, 7.30 mmol), a commercially available compound 1 (1.50 g, 7-30 mmol), and sodium tert-butoxide (842 mg, 8.76 mmol) were added, and the system was degassed, and replaced with nitrogen. Xantphos (127 mg, 0.22 mmol) and Pd2(dba)3 (67 mg, 0.67 mmol) were added to react them at 100°C for 1 hour. Toluene (8 ml) was added to dilute the reaction, and this was filtered using Celite. The filtrate was concentrated under reduced pressure, and the resulting residue was purified by silica gel column chromatography (chloroform-methanol) to obtain a compound 3 (1.27 g, yield 77percent). 1H-NMR (CDCl3 / TMS) deltappm: 1.13 (d, J = 6.2Hz, 3H), 1.57 (s, 1H), 2.28-2.37 (m, 1H), 2.35 (s, 3H), 2.67 (dt, J = 3.5, 11.6Hz, 1H), 2.92-3.15 (m, 3H), 3.46 (d, J = 11.6Hz, 2H), 6.69 (dd, J = 8.9, 2.7Hz, 1H), 6.78 (d, J = 2.7Hz, 1H), 7.19 (d, J = 8.9Hz, 1H).
As the paragraph descriping shows that 75336-86-6 is playing an increasingly important role.
Reference：
Patent; Shionogi&Co., Ltd.; EP2184272; (2010); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics