With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.21655-48-1,cis-2,6-Dimethylpiperazine,as a common compound, the synthetic route is as follows.
A mixture of intermediate 47 (0.49 g; 0.85 mmol) and cis 2,6-dimethylpiperazine (0.2 g; 1.7 mmol) in MeOH (6 mL) was stirred at room temperature overnight. Sodium triacetoxyborohydride (0.54 g; 2.6 mmol) was added to the reaction mixture and stirred 3 hours at room temperature. The solution was poured into cooled water and basified with K2CO3 powder and the product was extracted with EtOAc. The organic layer was separated, dried over MgSC , filtered and evaporated to dryness. The residue (0.625 g) was purified by chromatography over silica gel (Irregular SiOH, 15-40 muiotaeta, gradient from 97percent DCM 3percent CH3OH 0.1percent NH4OH to 85percent DCM 15percent CH3OH 0.1percent NH4OH). The fractions containing the product were collected and evaporated to dryness to afford 0.347 g (61percent) of intermediate 49., 21655-48-1
21655-48-1 cis-2,6-Dimethylpiperazine 6950261, apiperazines compound, is more and more widely used in various fields.
Reference£º
Patent; JANSSEN PHARMACEUTICA NV; MEVELLEC, Laurence, Anne; MEERPOEL, Lieven; COUPA, Sophie; PONCELET, Virginie, Sophie; PILATTE, Isabelle, Noelle, Constance; PASQUIER, Elisabeth, Therese, Jeanne; BERTHELOT, Didier, Jean-Claude; QUEROLLE, Olivier, Alexis, Georges; MEYER, Christophe; ANGIBAUD, Patrick, Rene; DEMESTRE, Christophe, Gabriel, Marcel; MERCEY, Guillaume, Jean, Maurice; (203 pag.)WO2016/97359; (2016); A1;,
Piperazine – Wikipedia
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