An efficient tandem elimination–cyclization–desulfitative arylation of 2-(gem-dibromovinyl)phenols(thiophenols) with sodium arylsulfinates
作者:Wei Chen、Pinhua Li、Tao Miao、Ling-Guo Meng、Lei Wang
DOI:10.1039/c2ob27232f
日期:——
An efficient tandem eliminationâcyclizationâdesulfitative arylation of 2-(gem-dibromovinyl)phenols(thiophenols) with sodium arylsulfinates has been developed. In the presence of TBAFâPdCl2âCu(OAc)2âNEt3, the reactions generated 2-arylbenzofurans(thiophenes) with good yields in one-pot under ligand-free conditions.
Synthesis of 2-selenyl(sulfenyl)benzofurans via Cu-catalyzed tandem reactions of 2-(gem-dibromovinyl)phenols with diorganyl diselenides(disulfides)
作者:Jie Liu、Wei Chen、Lei Wang
DOI:10.1039/c3ra23361h
日期:——
An efficient synthesis of 2-selenyl(sulfenyl)benzofurans has been accomplished through a copper(I)-catalyzed tandem reaction of 2-(gem-dibromovinyl)phenols with diorganyl diselenides and disulfides in the presence of CuI/Mg/t-BuOLi in DMSO. Using this protocol, a variety of 2-selenyl(sulfenyl)benzofuran derivatives were obtained in good yields.
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.