Preparation method of (-)-1-[(4-chlorophenyl)benzyl]piperazine_Kain Industrial Additive

overview[1] (-)-1-[(4-chlorophenyl)benzyl]piperazine can be used as a pharmaceutical synthesis intermediate, such as the synthesis of levocetirizine. levocetirizine was launched in february 2001. it is a third-generation anti-allergic drug. since it is the levorotatory body of cetirizine, its pharmacological effects are similar to that of cetirizine. it is mainly used to treat the respiratory system, skin…