75472-71-8Relevant academic research and scientific papers
A: D 3h-symmetry hexaazatriphenylene-tris-N-heterocyclic carbene ligand and its coordination to iridium and gold: Preliminary catalytic studies
Ibá?ez,Poyatos,Peris
, p. 3733 - 3736 (2017)
A new D3h-symmetry tris-N-heterocyclic carbene ligand has been prepared and coordinated to iridium and gold. The ligand contains an electron-poor hexaazatriphenylene core; thus, the resulting tris-NHC ligand is a poor electron donor. The tris-A
Gold(I) and Gold(III) Complexes of Expanded-Ring N-Heterocyclic Carbenes: Structure, Reactivity, and Catalytic Applications
Kumar, Anuj,Singh, Chandan,Tinnermann, Hendrik,Huynh, Han Vinh
, p. 172 - 181 (2020)
The oxidative addition of bromine to homo- and heterobis(carbene) gold(I) complexes 1-6 containing expanded-ring N-heterocyclic carbene (erNHC) ligands was explored to prepare the first examples of gold(III) erNHC complexes. The use of stoichiometric amou
Gold(I) complexes bearing ring-fused benzoxazine-derived triazolylidenes and their use in C–N bond-forming processes
Campos-Dominguez, Emmanuel,Vasquez-Perez, Jose,Rojas-Lima, Susana,Lopez-Ruiz, Heraclio,Mendoza-Espinosa, Daniel
, (2020/12/07)
We report the synthesis and full characterization of a novel series of ring-fused benzoxazine-derived triazolium salts (1a–c) and their corresponding triazolylidene gold(I) complexes (2a–c). All new compounds were fully characterized by means of 1H and 13C NMR spectroscopy, elemental analyses, and mass spectroscopy and in the case of triazoliums 1a and 1b by single-crystal X-ray diffraction. The new triazolylidene gold complexes (2a–c) were tested as precatalysts in the hydroamination and hydrohydrazination of terminal alkynes employing aniline derivatives and hydrazine as nitrogen sources, respectively.
Synthesis and Catalytic Applications of Multinuclear Gold(I)-1,2,3-Triazolylidene Complexes
Rendón-Nava, David,álvarez-Hernández, Alejandro,Mendoza-Espinosa, Daniel
supporting information, p. 840 - 847 (2021/02/26)
A series of mono- to trinuclear gold(I) complexes (1–3) supported by oxo-functionalized 1,2,3-triazolylidenes have been prepared. All new compounds were fully characterized by means of 1H and 13C NMR spectroscopy, elemental analyses, and in the case of complexes 1 and 2 by x-ray diffraction. The catalytic performance of the new triazolylidene gold complexes was tested in several hydroelementation and cyclization processes employing a variety of alkynes as starting materials. According to the overall results, the trinuclear complex 3 displayed the highest catalytic activity in all processes, providing good to excellent yields under mild reaction conditions.
Syntheses of Triangular Gold Complexes and Their Applications in Hydroamination Reaction
Li, Jia,Li, Xujun,Sun, Lei,Wang, Xiaoshuang,Yuan, Lixia,Wu, Lingang,Liu, Xiang,Wang, Yanlan
supporting information, p. 4230 - 4237 (2021/09/25)
Triangular all-metal complexes have aroused our research interest due to their unique structural and properties. Herein, through the facile reduction of μ3-oxo complex [μ3-O(PPh3Au)3]+BF4s
Gold(I) complexes with multifunctional phosphane ligands: Synthesis and catalysis
Biffis, Andrea,Baron, Marco,Tubaro, Cristina,Rancan, Marzio,Armelao, Lidia,Marchenko, Anatoliy,Koidan, Georgyi,Hurieva, Anastasiia N.,Kostyuk, Aleksandr
, (2021/01/12)
Two novel gold(I) complexes with a phosphoguanidine ligand and with a novel cationic phosphane ligand have been prepared and structurally characterized. The phosphoguanidine ligand supports oxidative addition of biphenylene to the gold(I) centre, though the yield of the reaction is low. The phopshoguanidine gold(I) complexes is also able to efficiently catalyze the hydroamination of phenylacetylene with mesitylamine, whereas the gold(I) complex with the cationic phosphane ligand, due to its more electron-poor character, promotes the hydroarylation of ethyl propiolate with mesitylene.
Catalytic Arylative Endo Cyclization of Gold Acetylides: Access to 3,4-Diphenyl Isoquinoline, 2,3-Diphenyl Indole, and Mesoionic Normal NHC–Gold Complex
Wang, Jiwei,Yuan, Kemeng,Wang, Gendi,Liu, Ye,Zhang, Jun
supporting information, p. 212 - 217 (2020/12/07)
3,4-Diphenyl isoquinoline and 2,3-diphenyl indole are readily accessed by catalytic selective bis-arylative endo cyclization of gold acetylides. The synthetic approach could be also extended to prepare six-membered mesoionic NHC complex, which could furth
Towards the rational design of ylide-substituted phosphines for gold(i)-catalysis: From inactive to ppm-level catalysis
Handelmann, Jens,Babu, Chatla Naga,Steinert, Henning,Schwarz, Christopher,Scherpf, Thorsten,Kroll, Alexander,Gessner, Viktoria H.
, p. 4329 - 4337 (2021/04/12)
The implementation of gold catalysis into large-scale processes suffers from the fact that most reactions still require high catalyst loadings to achieve efficient catalysis thus making upscaling impractical. Here, we report systematic studies on the impa
Hydroamination reactions catalyzed by [Au2(μ-Cl)(μ-bis(phosphino)ferrocene)][BArF24]
Wolfarth, Sadie A.,Miner, Natasha E.,Wamser, Nicole E.,Gwinn, Reilly K.,Chan, Benny C.,Nataro, Chip
, (2019/12/09)
1,1′-bis(phosphino)ferrocene ligands are commonly employed in a variety of catalytic systems. These ligands are of particular interest as the steric and electronic properties of the phosphorus donor atoms can be altered by changing the substituents of the
Strongly Coordinating Ligands to Form Weakly Coordinating Yet Functional Organometallic Anions
Fisher, Steven P.,McArthur, Scott G.,Tej, Varun,Lee, Sarah E.,Chan, Allen L.,Banda, Isaac,Gregory, Aaron,Berkley, Kevin,Tsay, Charlene,Rheingold, Arnold L.,Guisado-Barrios, Gregorio,Lavallo, Vincent
, p. 251 - 256 (2019/12/30)
Weakly coordinating anions (WCAs) are generally tailored to act as spectators with little or no function. Here we describe the implementation of strongly coordinating dianionic carboranyl N-heterocyclic carbenes (NHCs) to create organometallic -ate comple
