摘要
在脱水剂PCl3的存在下,噻吩-2,5-二甲酸与乙醇胺反应直接生成噻吩-2,5-双噁唑啉及未环化产物1和2。副产物1和2碱性关环生成噻吩-2,5-双噁唑啉,总收率达63%。此方法的优点是合成路线短,操作简单。
The reaction of 2,5-thiophene dicarboxylic acid with ethanolamine in the presence of dehydrating agent PCl3 gave 2,5- thiophene bis(oxazoline) and the non-cyclizing product of 1 and 2. The non-cyclizing product can be converted to 2,5-thiophene bis(oxazollne) in an alkaline environment, with its total yield reaching 63 % . The advantages of this method over previously reported ones are the shorter route and convenient operating procedure.
出处
《化学试剂》
CAS
CSCD
北大核心
2007年第2期115-116,共2页
Chemical Reagents
基金
湖南省教育厅资助项目(O4C639)
关键词
C2对称
双噁唑啉
合成
C2-symmetric
bis(oxazoline)
synthesis