286014-44-6Relevant articles and documents
Simple and reactive Ir(i) N-heterocyclic carbene complexes for alkyne activation
Gatus, Mark R. D.,Pernik, Indrek,Tompsett, Joshua A.,Binding, Samantha C.,Peterson, Matthew B.,Messerle, Barbara A.
supporting information, p. 4333 - 4340 (2019/04/01)
Two simple unsymmetrical monometallic Ir(i) complexes with an N-heterocyclic carbene ligand and an analogous bimetallic Ir(i) complex were synthesised. These complexes were found to be extremely active catalysts for a range of C-X (X = N or O) and Si-N bond forming reactions involving alkyne and imine activation for dihydroalkoxylation, hydroamination and hydrosilylation reactions. These catalysts exhibited reaction rates far exceeding those of other Rh(i) and Ir(i) complexes previously reported. In addition, a small change to the ligand design (phenyl vs. mesityl) substantially affected both the reactivity and product selectivity of the catalyst. The Ir(i) complex bearing a mesitylene wingtip provided unprecedented regioselectivity in the dihydroalkoxylation reaction and a new kinetic product from the typical hydrosilylation protocol of 2-benyzlpyrroline to produce an N-silylaminoalkene. Our mechanistic studies indicated that this transformation proceeded via a dehydrogenative coupling mechanism.
Tunable Aryl Alkyl Ionic Liquids with Weakly Coordinating Tetrakis((1,1,1,3,3,3-hexafluoropropan-2-yl)oxy)borate [B(hfip)4] Anions
Kaliner, Maria,Rupp, Alexander,Krossing, Ingo,Strassner, Thomas
supporting information, p. 10044 - 10049 (2016/07/19)
Weakly coordinating borate or aluminate anions have recently been shown to yield interesting properties of the resulting ionic liquids (ILs). The same is true for large phenyl-substituted imidazolium cations, which can be tuned by the choice, position, or
Gold(I)-catalyzed cyclizations of 1,6-enynes: Alkoxycyclizations and exol endo skeletal rearrangements
Nieto-Oberhuber, Cristina,Munoz, M. Paz,Lopez, Salome,Jimenez-Nunez, Eloisa,Nevado, Cristina,Herrero-Gomez, Elena,Raducan, Mihai,Echavarren, Antonio M.
, p. 1677 - 1693 (2007/10/03)
Gold(1) complexes are the most active catalysts for alkoxy- or hydroxycyclization and for skeletal rearrangement reactions of 1,6-enynes. Intramolecular alkoxycyclizations also proceed efficiently in the presence of gold(I) catalysts. The first examples o