With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.106261-48-7,4-((4-Methylpiperazin-1-yl)methyl)benzoic acid,as a common compound, the synthetic route is as follows.
Comparative Example 21 : LambdaT-(5-bromo-2-cyano-4-pyrimidinyl)-Lambdar-(2,2-dimethylpropyl)- 4-[(4-methyl-1-piperazinyl)methyl]benzohydrazide trifluoroacetate.Intermediate 21 (1 g, 4.3 mmol) was dissolved in thionyl chloride (5 ml). The reaction mixture was stirred at room temperature for 17 hours. The solvent was evaporated in vacuo and the acid chloride was used without any further purification.To a stirred solution of Intermediate 19 (200 mg, 0.70 mmol) in pyridine (1 mL) and DIPEA (5 mL), potassium carbonate (193 mg, 1.40 mmol) and previously obtained acid chloride(443 mg, 1.75 mmol) were added and the resulting reaction mixture was stirred at room temperature for 17 hours. The solvent was evaporated in vacuo and the crude reaction mixture was purified by flash chromatography (silica gel, dichloromethane:methanol). The solid was repurified by HPLC (H2O:ACN) to give the title compound. 1H NMR (300 MHz, DMSO) delta ppm: 11.33 (s, 1H), 8.64 (s, 1 H), 7.91 (d, 2H), 7.49 (d, 2H), 3.72 (s, 2H), 3.37(m, 2H), 3.25-2.81 (br, 6H), 2.78 (s, 3H) 0.99 (s, 9H). [ES+ MS] m/z 500 (MH+)., 106261-48-7
The synthetic route of 106261-48-7 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; GLAXO GROUP LIMITED; WO2007/25774; (2007); A2;,
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