Sterically driven synthesis of ruthenium and ruthenium–silver N-heterocyclic carbene complexes
作者:C. Cesari、S. Conti、S. Zacchini、V. Zanotti、M. C. Cassani、R. Mazzoni
DOI:10.1039/c4dt02747g
日期:——
A sterically driven synthetic route from non-bulky silver NHC to novel Ru(NHC) complexes and from bulky Ag(NHC) to unprecedented heterobimetallic Ru–Ag(NHC) complexes is presented.
Easily available manganese(I) N‐heterocycliccarbene (NHC) complexes, Cp(CO)2Mn(NHC), obtained in one step from industrially produced cymantrene, were evaluated as pre‐catalysts in the hydrosilylation of carbonyl compounds under UV irradiation. Complexes with NHC ligands incorporating at least one mesityl group led to the most active and selective catalytic systems. A variety of aldehydes (13 examples)
A Convenient Synthesis of Triflate Anion Ionic Liquids and Their Properties
作者:Nikolai V. Ignat’ev、Peter Barthen、Andryi Kucheryna、Helge Willner、Peter Sartori
DOI:10.3390/molecules17055319
日期:——
synthesis of high purity triflate ionic liquids via direct alkylation of organic bases (amines, phosphines or heterocyclic compounds) with methyl and ethyl trifluoromethanesulfonate (methyl and ethyl triflate) has been developed. Cheap and non-toxic dimethyl and diethyl carbonate serve as source for the methyl and ethyl groups in the preparation of methyl and ethyl triflate by this invented process. The properties
Anionic and zwitterionic copper(i) complexes incorporating an anionic N-heterocyclic carbene decorated with a malonate backbone: synthesis, structure and catalytic applications
作者:Vincent César、Cécile Barthes、Yoann C. Farré、Stéphane V. Cuisiat、Bernard Y. Vacher、Rémy Brousses、Noël Lugan、Guy Lavigne
DOI:10.1039/c3dt32919d
日期:——
The anionic malonate-derived N-heterocycliccarbenes (maloNHCs) react cleanly and rapidly with copper chloride to generate the anioniccomplexes of type [(maloNHC)CuCl]·Li, which crystallize in the solid state either in an oligomeric trimer arrangement or in polymeric helixes depending on the substitution pattern and the solvent. Ten zwitterionic heteroleptic Cu(I) complexes combining the anionic maloNHC
Imidazolium ionic liquids: A simple anion exchange protocol
作者:Immaculada Dinarès、Cristina Garcia de Miguel、Anna Ibáñez、Neus Mesquida、Ermitas Alcalde
DOI:10.1039/b915743n
日期:——
An efficient and simple protocol was developed to obtain quantitative iodide or bromide exchange for a broad range of anions in imidazolium ionic liquids. Selected anions were loaded in an anion exchange resin using two different procedures and were then used to provide a pure convenient ion pair.