With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.639068-43-2,tert-Butyl 3,5-dimethylpiperazine-1-carboxylate,as a common compound, the synthetic route is as follows.
639068-43-2, Step 3 Synthesis of 3,5-Dimethyl-4-(2-trifluoromethyl-benzoyl)-piperazine-1-carboxylic acid tert-butyl ester Triethyl amine (55.6 mg, 0.07 mL, 0.55 mmol) was added to a stirred solution of 2,5-dimethyl-piperazine-1-carboxylic acid tert-butyl ester (98.6 mg, 0.45 mmol) followed by 2-trifluoromethyl-benzoyl chloride (95.6 mg, 0.45 mmol) and the resulting mixture was stirred at room temperature for 30 minutes. The reaction mixture was concentrated under reduced pressure to get the residue. The residue thus obtained was purified by column chromatography using 60-120 silica gel and 50percent ethyl acetate in hexane to afford 74 mg (41.71percent yield) of 3,5-dimethyl-4-(2-trifluoromethyl-benzoyl)-piperazine-1-carboxylic acid tert-butyl ester. LCMS Purity: 96.7percent.
As the paragraph descriping shows that 639068-43-2 is playing an increasingly important role.
Reference£º
Patent; Bischoff, Alexander; Subramanya, Hosahalli; Sundaresan, Kumar; Sammeta, Srinivasa Raju; Vaka, Anil Kumar; US2010/160323; (2010); A1;,
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