An efficient palladium-catalyzed copper- and amine-free Sonogashira coupling reaction of aryl bromides and chlorides was studied using a sterically hindered monooxychlorophosphine as new ligand.The use of 2 mol%Pd(OA...An efficient palladium-catalyzed copper- and amine-free Sonogashira coupling reaction of aryl bromides and chlorides was studied using a sterically hindered monooxychlorophosphine as new ligand.The use of 2 mol%Pd(OAc)_2 in the presence of K_2CO_3 allows the coupling reaction to proceed at mild condition with good to excellent yields.展开更多
The first aliphatic phosphenium cation featuring a P-S bond (dimethylamino)(methylthio)phosphenium cation 1.has been prepared by treatument of the (dimethylamino)(methylthio) chlorophosphines 2 wih the stoichiometri q...The first aliphatic phosphenium cation featuring a P-S bond (dimethylamino)(methylthio)phosphenium cation 1.has been prepared by treatument of the (dimethylamino)(methylthio) chlorophosphines 2 wih the stoichiometri quantity of AlCl3 in CH2Cl2 solution, and charcterized by 1H 13C 27Al and 31P NMR spectroseopy展开更多
基金Henan University of Technology for financial support(The Introduction of Talent Fund)
文摘An efficient palladium-catalyzed copper- and amine-free Sonogashira coupling reaction of aryl bromides and chlorides was studied using a sterically hindered monooxychlorophosphine as new ligand.The use of 2 mol%Pd(OAc)_2 in the presence of K_2CO_3 allows the coupling reaction to proceed at mild condition with good to excellent yields.
文摘The first aliphatic phosphenium cation featuring a P-S bond (dimethylamino)(methylthio)phosphenium cation 1.has been prepared by treatument of the (dimethylamino)(methylthio) chlorophosphines 2 wih the stoichiometri quantity of AlCl3 in CH2Cl2 solution, and charcterized by 1H 13C 27Al and 31P NMR spectroseopy