作者:Chia-Hua Tsai、Danielle N. Chirdon、Andrew B. Maurer、Stefan Bernhard、Kevin J. T. Noonan
DOI:10.1021/ol4024024
日期:2013.10.18
A 2,5-bis(tributylstannyl)thiophene 1,1-dioxide was prepared from 2,5-bis(trimethylsilyl)thiophene 1,1-dioxide, bis(tributyltin) oxide, and tetrabutylammonium fluoride (TBAF). The 2,5-bis(tributylstannyl)thiophene 1,1-dioxide and a 2,5-diiodothiophene 1,1-dioxide were utilized in a series of Stille cross-coupling reactions to afford thiophene 1,1-dioxides with either electron-donating or electron-withdrawing
由2,5-双(三甲基甲硅烷基)噻吩1,1-二氧化物,双(三丁基锡)氧化物和四丁基氟化铵(TBAF)制备2,5-双(三丁基锡烷基)噻吩1,1-二氧化物。2,5-双(三丁基锡烷基)噻吩1,1-二氧化物和2,5-二碘噻吩1,1-二氧化物用于一系列的Stille交叉偶联反应中,从而得到具有电子或给体或吸电子的取代基。吸电子基团极大地促进了这些砜杂环的还原,与具有两个苯基的噻吩1,1-二氧化物相比,–C 6 H 4 - p -NO 2取代基产生510 mV的位移。