申请人:Wright State University
公开号:US04082806A1
公开(公告)日:1978-04-04
A method of preparing tetraketone precursors which are useful in the production of high temperature resistant polyquinoxaline resins. Suitable diketones are oxidized with a halogenating agent, such as cupric halide or hydrogen bromide, and dimethylsulfoxide to produce the corresponding tetraketone. The tetraketones which can be produced by the instant process have the formula: ##STR1## wherein R is hydrogen or an aryl, substituted aryl, heterocyclic or substituted heterocyclic radical and R' is an aryl, substituted aryl, arylalkyl, arylether, arylthioether, arylsulfoxide, arylsulfone, heterocyclic or substituted heterocyclic radical.
一种制备四酮前体的方法,这些前体在生产高温耐磨聚喹噁唑树脂中很有用。适当的二酮通过氯化剂(如氯化铜或溴化氢)和二甲基亚砜氧化,产生相应的四酮。通过这种方法可以生产的四酮具有如下结构式:##STR1## 其中R为氢或芳基、取代芳基、杂环或取代杂环基,R'为芳基、取代芳基、芳基烷基、芳基醚、芳基硫醚、芳基亚砜、芳基砜醚、杂环或取代杂环基。