申请人:Shi Jianmin
公开号:US20130172570A1
公开(公告)日:2013-07-04
This present invention provides a method of making benzazoles comprising a process of making aryl or alkyl benzazoles from corresponding aryl acid chlorides or alkyl acid chlorides without applying hazard condensing agent. The benzazole compounds described in this invention have following formula I:
Wherein:
n is an integer of from 3 to 8;
Z is O, NR or S; and
R and R′ are individually hydrogen; alkyl of from 1 to 24 carbon atoms, for example, propyl, t-butyl, heptyl, and the like; aryl or hetero-atom substituted aryl of from 5 to 20 carbon atoms, for example, phenyl and naphthyl, furyl, thienyl, pyridyl, quinolinyl and other heterocyclic systems; or halo such as chloro, fluoro, bromo, cyano; or atoms necessary to complete a fused aromatic ring; and
B is a linkage unit consisting of alkyl, aryl, substituted alkyl, or substituted aryl which conjugately or unconjugately connects the multiple benzazoles together.
本发明提供了一种制备苯并咪唑的方法,包括从相应的芳基酸氯化物或烷基酸氯化物中制备芳基或烷基苯并咪唑的过程,而无需应用危险的缩合剂。本发明中描述的苯并咪唑化合物具有以下式I:
其中:
n是从3到8的整数;
Z是O、NR或S;
R和R'分别为氢、1至24个碳原子的烷基(例如丙基、叔丁基、庚基等)、5至20个碳原子的芳基或杂原子取代的芳基(例如苯基和萘基、呋喃基、噻吩基、吡啶基、喹啉基和其他杂环系统)或卤素,例如氯、氟、溴、氰;或必要的原子以完成融合芳环;且
B是连接多个苯并咪唑的共轭或非共轭的烷基、芳基、取代烷基或取代芳基的连接单元。