Palladium complexes of o-xylyl-linked alkoxybenzimidazolin-2-ylidenes: interesting structural conformations and application as pre-catalysts
MetadataShow full item record
New PdBr2-bis(N-heterocyclic carbene) complexes derived from 4,7-dibutoxybenzimidazole and 5,6-dibutoxybenzimidazole have been synthesized and structurally and spectroscopically characterized.The complexes show much greater solubility compared to the parent complex derived from benzimidazole, and interesting structural characteristics dependent on the position of the butoxy substituents. The complexes display high activities in the coupling of aryl iodides in the Mizoroki-Heckreaction and moderate activities in the Suzuki-Miyaura coupling of inactivated aryl bromides at low catalyst loadings, although activity differences between pre-catalysts has been observed. Structuralstudies suggest electronic effects within the complexes to be strongly affected by steric interactions between the hydrogen atoms of the o-xylyl bridges and the benzimidazole components and their substituents.
The link to the journal's home page is: http://www.rsc.org/publishing/journals/DT/Index.asp
Showing items related by title, author, creator and subject.
Ling, B.; Ho, C.; Wang, L.; Teo, Kok Lay; Tse, C.k; Dai, Q. (2014)Some of the nodes of complex social networks may support for a given proposal, while the rest of the nodes may be against the given proposal. Even though all the nodes support for or are against the given proposal, the ...
Complex Adaptive Systems and Conversation Analysis: A New Perspective for Consumer Behaviour Research?Whiteley, Jervis (2002)The research question for this study is “Can concepts from complex adaptive systems and conversation analysis be used to research consumer behaviour?" This is, primarily, a theoretical question. After a wide-ranging ...
A primary study of the Jilin-Heilongjiang high-pressure metamorphic belt: Evidence and tectonic implicationsZhou, Jian-Bo; Han, J.; Wilde, Simon; Guo, X.; Zeng, W.; Cao, J. (2013)Jilin-Heilongjiang high-pressure metamorphic belt (Ji-Hei HP Belt), around western and southern margin of the Jiamusi-Khanka block, is the high-pressure metamorphic belt with the accretionary complex due to the subduction ...