The Me6-TREN/TREN Mixed-Ligand Effect During SET-LRP in the Catalytically Active DMSO Revitalizes TREN into an Excellent Ligand.
The Me6-TREN/TREN Mixed-Ligand Effect During SET-LRP in the Catalytically Active DMSO Revitalizes TREN into an Excellent Ligand.
复制标题
在催化活性 DMSO 中的 SET-LRP 过程中，Me6-TREN/TREN 混合配体效应使 TREN 重新成为优秀的配体。
作者：
Devendra S. Maurya;Ayesha Malik;Xiaojing Feng;Nabil Bensabeh;Gerard Lligadas;V. Percec
在Cu（0）线催化丙烯酸甲酯（MA）单电子转移活性自由基聚合（SET-LRP）过程中，以二溴丙酰乙烷（BPE）为引发剂，观察到三（2-二甲氨基乙基）胺（Me 6-TREN）与三（2-氨基乙基）胺（TREN）的混合配体效应.在Me 6-TREN、TREN和混合配体Me 6-TREN/TREN存在下，在DMSO中SET-LRP的反应外部顺序证明了与在Cu（0）粉末存在下报道的类似的DMSO催化活性。具有接近100%链端官能度的DMSO的催化活性促进便宜得多的TREN充当与Me 6-TREN和混合配体竞争的非常有效的配体，并使TREN恢复为优异的配体。配体之间1/1比率的混合配体的最高活性表明，除了这两种配体之间的快速交换之外，通过氢键稳定的新的单一动态配体可以产生这些结果。
A mixed-ligand effect was observed for mixtures of tris(2-dimethylaminoethyl)amine (Me6-TREN) with tris(2-aminoethyl)amine (TREN) ligands during Cu(0) wire-catalyzed single electron transfer-living radical polymerization (SET-LRP) of methyl acrylate (MA) initiated with bis(2-bromopropionyl)ethane (BPE) in DMSO. The external order of reaction of SET-LRP both in the presence of Me6-TREN, TREN and of the mixed-ligand Me6-TREN/TREN, in DMSO, demonstrated a catalytic activity for DMSO similar to that reported in the presence of Cu(0) powder. The catalytic activity of DMSO, with close to 100% chain end functionality, facilitates the much less expensive TREN to act as a very efficient ligand that is competitive with Me6-TREN and with the mixed-ligand and revitalizes TREN into an excellent ligand The highest activity of the mixed-ligand at 1/1 ratio between ligands suggests that in addition to a fast exchange between these two ligands, a new single dynamic ligand stabilized by hydrogen-bonding may generate these results.
影响因子：
15
作者：
Fors BP;Buchwald SL
通讯作者：
Buchwald SL
影响因子：
8.4
作者：
Bensabeh, Nabil;Moreno, Adrian;Lligadas, Gerard
通讯作者：
Lligadas, Gerard