General Synthesis of Alkenyl Sulfides by Palladium-Catalyzed Thioetherification of Alkenyl Halides and Tosylates
作者:Noelia Velasco、Cintia Virumbrales、Roberto Sanz、Samuel Suárez-Pantiga、Manuel A. Fernández-Rodríguez
DOI:10.1021/acs.orglett.8b00854
日期:2018.5.18
ligand is reported. These reactions occur under low catalyst loading and in high yields and display widescope, including the coupling of bulky thiols and trisubstituted bromoolefins, and functional group tolerance. In addition, the thioetherification of less reactive chloroalkenes and, for the first time, alkenyl tosylates was accomplished using a catalyst generated from CyPFtBu alkylbisphosphine ligand
据报道,链烯基溴化物与硫醇的交联反应是由廉价dppf配体衍生的钯配合物催化的。这些反应在低催化剂负载和高收率下发生,并显示出较宽的范围,包括大体积硫醇和三取代溴代烯烃的偶联以及官能团的耐受性。另外,使用由CyPF t Bu烷基双膦配体产生的催化剂实现了反应性较低的氯代烯烃的硫醚化以及首次甲苯基甲苯磺酸酯的硫醚化。
Alkyne Hydrothiolation Catalyzed by a Dichlorobis(aminophosphine) Complex of Palladium: Selective Formation of cis-Configured Vinyl Thioethers
作者:Roman Gerber、Christian M. Frech
DOI:10.1002/chem.201200388
日期:2012.7.16
Cis all round: Dichlorobis[1‐(dicyclohexylphosphanyl)piperidine]palladium, [(P(NC5H10)(C6H11)2})2Pd(Cl)2], is a highly efficient alkynehydrothiolation catalyst and the first generally applicable system that selectively generates cis‐configured anti‐Markovnikov adducts in excellent yields within only a few minutes at 120 °C in the presence of only 0.05 mol % of the catalyst (see scheme).
全面顺产:二氯双[1-(二环己基膦酰基)哌啶]钯,[[P (NC 5 H 10)(C 6 H 11) 2 }) 2 Pd(Cl) 2 ]是一种高效的炔烃加氢硫基化催化剂,第一个普遍适用的系统,仅在0.05 mol%的催化剂存在下,在120°C的情况下,仅需几分钟即可选择性地以优异的收率生成顺式构型的反马氏复合物(见方案)。