Electrophilic phenylselenenylation of thiophenes. Synthesis of poly(phenylseleno)thiophenes.
摘要:
The phenylselenenyl sulfate, generated from the oxidation of diphenyl diselenide with ammonium persulfate, easily effects electrophilic aromatic substitution reactions on thiophene, 2-and 3-methylthiophenes and on 3-bromothiophene. The phenylseleno group activates the substrate to further substitution. Under controlled experimental conditions, it is thus possible to introduce the desired number of phenylseleno groups into the thiophene ring.
The phenylselenenyl sulfate, generated from the oxidation of diphenyl diselenide with ammonium persulfate, easily effects electrophilic aromatic substitution reactions on thiophene, 2-and 3-methylthiophenes and on 3-bromothiophene. The phenylseleno group activates the substrate to further substitution. Under controlled experimental conditions, it is thus possible to introduce the desired number of phenylseleno groups into the thiophene ring.
Electrochemical Radical Selenylation of Alkenes and Arenes via Se–Se Bond Activation
作者:Li Sun、Liwei Wang、Hesham Alhumade、Hong Yi、Hu Cai、Aiwen Lei