已经开发出一种有效的铜催化方法,以硫代羧酸作为硫源,用于苯并[ b ]噻吩和苯并噻唑衍生物。在CuI和1,10-phen和n -Pr 3 N为碱的情况下,(2-碘苄基)三苯基溴化and和(2-碘苯基亚氨基)三苯基phosph与硫代羧酸平稳反应,生成苯并[ b ]噻吩和苯并噻唑通过顺序的Ullmann型C–S键耦合和Wittig缩合,可以得到高收率的衍生物。
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.
Three-component 2-aryl substituted benzothiophene formation under transition-metal free conditions
作者:Pengcheng Jiang、Xingzong Che、Yunfeng Liao、Huawen Huang、Guo-Jun Deng
DOI:10.1039/c6ra07730g
日期:——
A base-mediated 2-aryl substituted benzothiopheneformation from 2-bromobenzene aldehydes, benzylic esters and elemental sulfur under transition-metal-free conditions is described. Various 2-aryl substituted benzothiophene were efficiently obtained under mild conditions.
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.
Copper-Catalyzed Synthesis of Benzo[<i>b</i>]thiophenes and Benzothiazoles Using Thiocarboxylic Acids as a Coupling Partner
作者:Hui Yu、Meishu Zhang、Yuzhe Li
DOI:10.1021/jo401353w
日期:2013.9.6
copper-catalyzed approach to benzo[b]thiophene and benzothiazole derivatives using thiocarboxylic acids as a sulfur source has been developed. In the presence of CuI and 1,10-phen, and n-Pr3N as the base, (2-iodobenzyl)triphenylphosphonium bromide and (2-iodophenylimino)triphenylphosphorane reacted smoothly with thiocarboxylic acids to give benzo[b]thiophene and benzothiazole derivatives in good yields via
已经开发出一种有效的铜催化方法,以硫代羧酸作为硫源,用于苯并[ b ]噻吩和苯并噻唑衍生物。在CuI和1,10-phen和n -Pr 3 N为碱的情况下,(2-碘苄基)三苯基溴化and和(2-碘苯基亚氨基)三苯基phosph与硫代羧酸平稳反应,生成苯并[ b ]噻吩和苯并噻唑通过顺序的Ullmann型C–S键耦合和Wittig缩合,可以得到高收率的衍生物。