N,N′-Dialkyl- andN-Alkyl-N-mesityl-SubstitutedN-Heterocyclic Carbenes as Ligands in Grubbs Catalysts
作者:Nele Ledoux、Bart Allaert、Siegfried Pattyn、Hans Vander Mierde、Carl Vercaemst、Francis Verpoort
DOI:10.1002/chem.200600064
日期:2006.6.2
Various symmetrically and asymmetrically substituted N-heterocyclic carbene (NHC) ligands bearing aliphatic nitrogen-containing side groups have been synthesised. In our attempts to isolate the corresponding second-generation Grubbs catalysts, we were unsuccessful when using the symmetrical aliphatic NHC ligands. For the asymmetrical ligands bearing an aliphatic moiety on one side and an aromatic mesityl
已经合成了带有脂族含氮侧基的各种对称和不对称取代的N-杂环卡宾(NHC)配体。在尝试分离相应的第二代Grubbs催化剂的尝试中,使用对称的脂族NHC配体时我们没有成功。对于在一侧上具有脂肪族部分而在另一侧上具有芳香族均三甲苯基的不对称配体,实现了膦配体的取代。已经评估了如此形成的一系列Ru基复分解引发剂的性能,用于环辛-1,5-二烯的开环复分解聚合(ROMP)和二乙基丙二酸二乙酯的闭环复分解(RCM)。