In this way , the synthesis of three different intermediates , which are ortho-no-fluorine atoms substituted , one fluorine atom substituent , double fluorine atom substituent , are studied .
分别对邻位无氟原子取代基、单氟原子取代基、双氟原子取代基三类中间体进行了合成方法研究。
Substituent effects in electrophilic aromatic substitution .
芳香族亲电取代的取代效应。
Different name of functional group and substituent .
官能团和取代基的不同命名。
Theoretical investigation of the partial substituent effect of the energy gap of silicon clusters .
