Electrochemical synthesis of bis(2-thienyl) silanes, 2-thienylchlorosilanes, bis[5-(2-bromothienyl)]silanes, and 5-(2-bromothienyl) dimethylchlorosilane, precursors of poly[(silanylene)thiophene]s
作者:Carole Moreau、Françoise Serein-Spirau、Michel Bordeau、Claude Biran、Jacques Dunoguès
DOI:10.1016/0022-328x(96)06333-4
日期:1996.9
Bis(2-thienyl)silanes and bis[5-(2-bromothienyl)]silanes were synthesized by electrochemical reduction of monohalothiophenes (Br,Cl) and 2,5-dibromothiophene respectively in the presence of a dichlorosilane in THF or LME, using an undivided cell, a sacrificial Mg or Al anode, a constant current density and tetrabutylammonium bromide as the supporting electrolyte. In addition, when dichlorosilanes were
通过在THF或LME中在二氯硅烷存在下分别通过单卤代噻吩(Br,Cl)和2,5-二溴噻吩的电化学还原反应,合成了双(2-噻吩基)硅烷和双[5-(2-溴噻吩基)]硅烷一个未分割的电池,一个牺牲性的Mg或Al阳极,一个恒定的电流密度和四丁基溴化铵作为支持电解质。另外,当大量使用二氯硅烷时,卤代噻吩仅进行单偶联反应,选择性地导致噻吩基氯硅烷,这揭示了电化学方法的多功能性。