NHC ligands
Synthesis and characterization of gold(I) complexes of dibenzotropylidene functionalized NHC ligands (Trop NHCs)
... H NMR spectra. While these protons resonate in the expected region above 9 ppm in the N-Me- and N-Ad-substituted compounds (9.21 and 9.56 ppm, respectively), the corresponding signal in DiPP-1 is found at 8.11 ppm and - ...
11
Palladium(0) NHC complexes : a new avenue to highly efficient phosphorescence
... contain NHC ligands, given their suitability as ligand motifs for luminescent applications has been demonstrated extensively across a variety of other ...
14
Palladium(0) NHC complexes : a new avenue to highly efficient phosphorescence
... The greater abundance of copper and its significantly lower cost than most other photophysically active metals make it an attractive option, and experimental results both in solution 10 and in devices 11 have been ...
38
Extending the utility of [Pd(NHC)(cinnamyl)Cl] precatalysts : Direct arylation of heterocycles
... with NHC ligands being SIPr (1,3-bis(2,6-diisopropylphenyl)-4,5-dihydroimi- dazol-2-ylidene), IPr (1,3-bis(2,6-diisopropylphenyl)imidazol- 2-ylidene), IPr* (1,3-bis(2,6-bis(diphenylmethyl)-4- ...
7
Ruthenium Complexes Bearing N-Heterocyclic Carbene (NHC) Ligands183-188
... donor ligands (for example, phosphane, amine, alkoxy, Schiff base), substituent groups in the NHC ligand allow fine-tuning of the steric and electronic effects, thus conferring better catalytic performance ...
6
Ruthenium Complexes Bearing N-Heterocyclic Carbene (NHC) Ligands123-137
... (NHC) ligands is selectively discussed as an improved alternative to their parent diphosphane ruthenium counterparts previously applied in olefin metathesis ...of ligands. Examples of chiral ...
15
Synthesis, characterization and catalytic activity of stable [(NHC)H][ZnXY2] (NHC = N Heterocyclic carbene, X, Y = Cl, Br) species
... During the past decades, transition metal complexes bearing NHC ligands (NHC = N- Heterocyclic Carbene) have gained increasing attention. Indeed, these have shown to be efficient catalysts in several ...
19
Normal and abnormal NHC coordination in cationic hydride iodide complexes of aluminium
... σ-donor ligands, these are ideally suited for the complexation of typically electron-deficient molecular aluminium(III) fragments, 3 but have also recently been instrumental in the synthesis of donor-stabilized ...
16
Synthesis of Azide-Modified NHC Coinage Metal Thiolates
... the NHC, which produces predictable changes in the overall reactivity of the ...these ligands, Nolan developed a method where one can measure the volume of a sphere that is centered around a metal, buried ...
108
Synthetic, Structural and Thermochemical Studies of N-Heterocyclic Carbene (NHC) and Tertiary Phosphine Ligands in the Ni(CO)2(L)x (L-PR3, NHC) Systems
... the NHC ligands, draw the electron density on the metal center and increases the metal-carbonyl ...expected NHC ligands of stronger donor ability to have a shorter Ni-C carbene bond length and ...
77
Examining the influence of specificity ligands and ATP-competitive ligands on the overall effectiveness of bivalent kinase inhibitors
... competitive ligands and specificity elements of modest potency can be combined to yield a bivalent kinase inhibitor with enhanced potency and selectivity, im- plementation of this strategy requires the identifica- ...
8
Enantioselective NHC catalyzed redox [2+2] cycloadditions with perfluoroketones; a route to fluorinated oxetanes
... In summary, the first NHC-catalyzed redox formal [2+2] cycloaddition from α-aroyloxyaldehydes has been developed. This methodology allows access to β-hydroxycarbonyl compounds following ring-opening in excellent ...
7
Alkali-metal-mediated zincation (AMMZn) meets N-heterocyclic carbene (NHC) chemistry : Zn–H exchange reactions and structural authentication of a dinuclear Au(I) complex with a NHC anion
... selective C4-zincation of alkyl-substituted NHC 1,3-di-tert-buty- limidazole-2-ylidene (IBu) can be readily accomplished to afford mixed sodium–zinc species 2 IBu . Isolable as a crystalline solid in 63% yield, 2 ...
8
Neutral dinuclear copper(I) NHC complexes : synthesis and application in the hydrosilylation of ketones
... cationic NHC complexes were not able to react directly with the silane to give the intermediate copper hydride spe-‐ cies, the use of a tert-‐butoxide base proved ...the NHC ligand, but without overcoming ...
6
Mechanism of the catalytic carboxylation of alkylboronates with CO2 using Ni NHC complexes : a DFT study
... Despite the numerous variations in metal-catalyzed protocols for the carboxylation of organoboronate derivatives, the mechanism of such a transformation remains unknown. In particular, for the Ni-promoted version of this ...
9
Immunophilin ligands in peripheral nerve regeneration
... philin ligands” ...immunophilin ligands readily cross the blood-brain barrier, being orally effective in a variety of animal models of ischaemia, traumatic injuries and human neurodegenerative disorders ...
7
Unexpected reactions of NHC*—CuI and —AgI bromides with potassium thio or selenocyanate
... terminal NHC*Se ligand ...bulky NHC*Se ligands, which lead to the rare coordination number of 3 of the two Cu I cations, move to opposite positions with respect to the copper cyanide polymer, ...
50
“New Look” Opioids: Biased Ligands
... Between the illicit use of opioids and attendant overdoses, and accidental overdoses with prescribed drugs, overuse of opioids has become a serious problem. At the same time, finding that fine balance between minimizing ...
8
Chemistry of the lanthanides with pyrazolylborate ligands
... A Schlenk tube containing a solution/suspension of 3.4 in 30/40 petrol was filled with NO to a pressure of 760 torr (1 atmosphere) and the contents stirred at low temperature (-78 “C). As the flask was allowed to warm to ...
228
Synthesis and complexation of bisiminoaryl ligands
... The C,C-trans bis-cyclometalation of 2,6-diphenylpyridine across an iridium center was investigated. Equally the synthesis and complexation of a series of bis(imino)aryl ligands was studied. Installing methyl and ...
53