A Highly Efficient Tandem Reaction of 2-(gem-Dibromovinyl)phenols(thiophenols) with Organosilanes to 2-Arylbenzofurans (thiophenes)
作者:Jie Liu、Wei Chen、Yong Ji、Lei Wang
DOI:10.1002/adsc.201100875
日期:2012.5.21
cross‐coupling reaction. In the presence of tetra‐(n‐butyl)ammonium fluoride (TBAF), palladium(II) acetate [Pd(OAc)2] and triphenylphosphine (PPh3), the reaction of 2‐(gem‐dibromovinyl)phenols(thiophenols) with phenyl(trialkoxy)silanes proceeded smoothly and generated the corresponding products with good yields in one‐pot. It should be noted that TBAF plays an important role in the tandem reaction.
通过有效的串联消除-分子内加成-Hiyama交叉偶联反应制备了2-芳基苯并呋喃(噻吩)。在四(正丁基)氟化铵(TBAF),乙酸钯(II)[Pd(OAc)2 ]和三苯膦(PPh 3)的存在下,2-(宝石-二溴乙烯基)苯酚(硫酚)的反应与苯基(三烷氧基)硅烷的合成过程顺利进行,一次生成的相应产物收率很高。应当指出,TBAF在串联反应中起重要作用。