申请人:Cheng Che Jim
公开号:US09018418B2
公开(公告)日:2015-04-28
A method for preparation of an aryl poly(oxalkyl) quaternary ammonium compound is provided, said method comprising steps of: 1) reacting a phenol with a dihalopolyalkylene ether under the action of a phase transfer catalyst, to obtain an arylpoly(oxalkyl) halide; 2) reacting said arylpoly(oxalkyl) halide with an amination reagent under the action of a phase transfer catalyst, to obtain an arylpoly(oxalkyl) amine; 3) reacting said arylpoly(oxalkyl) amine with an alkylation reagent, to obtain an aryl poly(oxalkyl) quaternary ammonium compound; wherein R1 is H or a C1 to C16 alkyl group, located in the ortho, meta or para position; n is an integer of 2 to 6; R2 is H or a C1 to C16 alkyl group; R3 is H or a C1 to C16 alkyl group; R4 is a C1 to C16 alkyl group; X1 is Br or Cl; X is Cl, Br, or I. The preparation method according to the present invention requires low temperature and low pressure, the reaction time is short, and an overall yield can reach 75%. The operation is simple, the cost is low, and the product can be separated easily and have a purity of pharmaceutical grade, thereby facilitating the large-scale production.
本发明提供了一种制备芳基聚(氧烷基)季铵化合物的方法,该方法包括以下步骤:1)在相转移催化剂作用下,将苯酚与二卤代聚氧烷醚反应,得到芳基聚(氧烷基)卤代物;2)在相转移催化剂作用下,将所述芳基聚(氧烷基)卤代物与氨化试剂反应,得到芳基聚(氧烷基)胺;3)将所述芳基聚(氧烷基)胺与烷基化试剂反应,得到芳基聚(氧烷基)季铵化合物;其中,R1为H或在邻、间或对位的C1到C16烷基;n为2到6的整数;R2为H或C1到C16烷基;R3为H或C1到C16烷基;R4为C1到C16烷基;X1为Br或Cl;X为Cl、Br或I。本发明的制备方法需要低温低压,反应时间短,总收率可达75%。操作简单,成本低,产品易于分离且具有药品级纯度,从而有利于大规模生产。