With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.76003-29-7,1-Boc-3-Oxopiperazine,as a common compound, the synthetic route is as follows.,76003-29-7
NaH (60 % in mineral oil) (0.24 g; 5.99mmol) was added to a solution of Int. 177 (1 g; 4.99 mmol) in DMF (8 ml) and cooled to 0 C under N2-gas atmosphere. The mixture was stirred at this temperature for 10 min. Methyl bromoacetate (0.522 mL; 5.49 mmol) was added. The cooling bath was removed and the reaction stirred overnight. Subsequently, the reaction was quenched with H20 (2 ml ). A saturated NaCl aqueous solution (20 ml) was added and the mixture was extracted with EtOAc (14 ml ). The organic layer was dried over MgS04, filtered and concentrated to dryness. The residue was purified by chromatography over silica gel eluting with a gradient from 100 % DCM to 40 % DCM and 60 % DCM/MeOH 9/1, v/v. The desired fractions were collected and the solvent was evaporated. Yield: 1.14 g of Int. 178 (84 %).
As the paragraph descriping shows that 76003-29-7 is playing an increasingly important role.
Reference：
Patent; JANSSEN PHARMACEUTICA NV; DIELS, Gaston, Stanislas, Marcella; SCHOENTJES, Bruno; VERSELE, Matthias, Luc, Aime; BERTHELOT, Didier, Jean-Claude; WILLEMS, Marc; VIELLEVOYE, Marcel; EMBRECHTS, Werner, Constant, Johan; WROBLOWSKI, Berthold; MEERPOEL, Lieven; WO2015/150555; (2015); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics