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Schowner, Roman; Elser, Iris; Benedikter, Mathis; Momin, Mohasin; Frey, Wolfgang; Schneck, Tanja; Stoehr, Laura; Buchmeiser, Michael R. published the article 《Origin and Use of Hydroxyl Group Tolerance in Cationic Molybdenum Imido Alkylidene N-Heterocyclic Carbene Catalysts》. Keywords: molybdenum carbene imido phenolate imidazolate alcoholate preparation metathesis catalyst; acyclic diene metathetic polymerization catalyst molybdenum alkylidene NHC complex; ring opening metathetic polymerization catalyst molybdenum alkylidene NHC complex; alc inhibition tolerance molybdenum alkylidene NHC metathetic polymerization catalyst; crystal structure molybdenum alkylidene NHC imido metathetic polymerization catalyst; mol structure molybdenum alkylidene NHC imido metathetic polymerization catalyst; N-heterocyclic carbenes; alcohols; molybdenum; olefin metathesis.They researched the compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene( cas:141556-42-5 ).Recommanded Product: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:141556-42-5) here.

Molybdenum imido alkylidene phenolate, imidazolate and alcoholate complexes were prepared as catalysts for metathetic polymerization of cycloalkenes and acyclic dienes. The origin of hydroxyl group tolerance in neutral and especially cationic molybdenum imido alkylidene N-heterocyclic carbene (NHC) complexes has been investigated. A wide range of catalysts was prepared and tested. Most cationic complexes can be handled in air without difficulty and display an unprecedented stability towards water and alcs. NHC complexes were successfully used with substrates containing the hydroxyl functionality in acyclic diene metathesis polymerization, homo-, cross and ring-opening cross metathesis reactions. The catalysts remain active even in 2-PrOH and are applicable in ring-opening metathesis polymerization and alkene homometathesis using alcs. as solvent. The use of weakly basic bidentate, hemilabile anionic ligands such as triflate or pentafluorobenzoate and weakly basic aromatic imido ligands in combination with a sterically demanding 1,3-dimesitylimidazol-2-ylidene NHC ligand was found essential for reactive and yet robust catalysts.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

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There are many compounds similar to this compound(141556-42-5)Name: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

Name: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene, is researched, Molecular C21H24N2, CAS is 141556-42-5, about N-Heterocyclic Carbene Ligand-Controlled Regioselectivity for Nickel-Catalyzed Hydroarylation of Vinylarenes with Benzothiazoles. Author is Li, Rui-Peng; Shen, Zheng-Wang; Wu, Qin-Jia; Zhang, Jie; Sun, Hong-Mei.

A facile regioselective switch for nickel-catalyzed hydroarylation of vinylarenes with benzothiazoles was developed, which relies on the simple structural variation of novel Ni(II) complexes of the type Ni(NHC)[P(OR)3]Br2. Using magnesium turnings as the reductant, Ni(IMes)[P(OEt)3]Br2 afforded branched products, while Ni(IPr*OMe)[P(OEt)3]Br2 created steric demand to afford linear products. This work also provides a rare example of the rational design of heteroleptic Ni(II) complexes that display the required air stability, reactivity, and regioselectivity via synergism between NHC and phosphite ligands.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene(SMILESS: CC1=CC(C)=CC(C)=C1[N+]2=[C-]N(C3=C(C)C=C(C)C=C3C)C=C2,cas:141556-42-5) is researched.Related Products of 1762-34-1. The article 《N-Heterocyclic Silylenes as Ligands in Transition Metal Carbonyl Chemistry: Nature of Their Bonding and Supposed Innocence》 in relation to this compound, is published in Chemistry – A European Journal. Let’s take a look at the latest research on this compound (cas:141556-42-5).

A study on the reactivity of the N-heterocyclic silylene Dipp2NHSi (1,3-bis(diisopropylphenyl)-1,3-diaza-2-silacyclopent-4-en-2-ylidene) with the transition metal complexes [Ni(CO)4], [M(CO)6] (M = Cr, Mo, W), [Mn(CO)5(Br)] and [(η5-C5H5)Fe(CO)2(I)] is reported. N-heterocyclic silylenes, the higher homologs of the now ubiquitous NHC ligands, show a remarkably different behavior in coordination chem. compared to NHC ligands. Calculations on the electronic features of these ligands revealed significant differences in the frontier orbital region which lead to some peculiarities of the coordination chem. of silylenes, as demonstrated by the synthesis of the dinuclear, NHSi-bridged complex [{Ni(CO)2(μ-Dipp2NHSi)}2] (2), complexes [M(CO)5(Dipp2NHSi)] (M = Cr 3, Mo 4, W 5), [Mn(CO)3(Dipp2NHSi)2(Br)] (9) and [(η5-C5H5)Fe(CO)2(Dipp2NHSi-I)] (10). DFT calculations on several model systems [Ni(L)], [Ni(CO)3(L)], and [W(CO)5(L)] (L = NHC, NHSi) reveal that carbenes are typically the much better donor ligands with a larger intrinsic strength of the metal-ligand bond. The decrease going from the carbene to the silylene ligand is mainly caused by favorable electrostatic contributions for the NHC ligand to the total bond strength, whereas the orbital interactions were often found to be higher for the silylene complexes. Also, the contribution of σ- and π-interaction depends significantly on the system under study. The σ-interaction is often much weaker for the NHSi ligand compared to NHC but the π-interaction prevails for many NHSi complexes. For the carbonyl complexes, the NHSi ligand is the better σ-donor ligand, and contributions of π-symmetry play only a minor role for the NHC and NHSi co-ligands.

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Yu. Smirnov, Mikhail; Kalinkin, Alexander V.; Kovtunova, Larisa M.; Bukhtiyarov, Valerii I. published an article about the compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene( cas:141556-42-5,SMILESS:CC1=CC(C)=CC(C)=C1[N+]2=[C-]N(C3=C(C)C=C(C)C=C3C)C=C2 ).Application of 141556-42-5. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:141556-42-5) through the article.

The paper investigates the capability of depositing an organometallic complex of iridium on a solid support by evaporation in vacuum with the support kept at room temperature The complex [Ir(COD)(IMes)Cl], where COD is 1,5-cyclooctadiene and IMes is 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene, was deposited on the surface of Highly Oriented Pyrolytic Graphite (HOPG), which was previously etched by Ar+ bombardment. The obtained samples [Ir(COD)(IMes)Cl]/HOPG were characterized by XPS. It was shown that during the deposition of the complex, its evaporation into vacuum occurred without the decomposition of the original mol. When a layer with a thickness of ≥1 nm was formed on the HOPG surface, most of the complex mols., which did not contact with the graphite surface, retained their original integrity. Mols. localized in the first monolayer were bound to surface carbon atoms, presumably, through chlorine ions. When the [Ir(COD)(IMes)Cl]/HOPG system was heated in vacuum to temperatures ≥200°C, the coordination sphere of the complex was destroyed, resulting in the formation of iridium metal particles on the HOPG surface.

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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Kim, Youngsuk; Byeon, Jung Eun; Jeong, Gu Yoon; Kim, Seoung Su; Song, Hayoung; Lee, Eunsung researched the compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene( cas:141556-42-5 ).Electric Literature of C21H24N2.They published the article 《1,2-dicarbonyl radicals with exceptional physiological and chemical stability》 about this compound( cas:141556-42-5 ) in ChemRxiv. Keywords: dicarbonyl radical physiol stability. We’ll tell you more about this compound (cas:141556-42-5).

Organic radicals have been of great academic interest due to their unique reactivity and potential applicability; however, lack of stability and solubility continues to limit their application, especially in physiol. conditions. For example, known aminoxyl radicals have half-life of a few minutes in physiol. conditions due to biol. redox active reagents, while shielding using polymeric or supramol. protecting groups increases their half-life up to several hours. Here the authors designed and synthesized a new small mol. organic radical based on 1,2-dicarbonyl scaffold with exceptional stability. The presented radicals showed superior stability over present organic radicals towards physiol. conditions (half-life of ~3000 h) and even resistant towards chem. reducing, oxidizing, acidic, basic conditions, and high temperature, without addnl. protection.

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Application In Synthesis of 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene, is researched, Molecular C21H24N2, CAS is 141556-42-5, about Understanding Synthetic Peculiarities of Cationic Molybdenum(VI) Imido Alkylidene N-Heterocyclic Carbene Complexes. Author is Schowner, Roman; Frey, Wolfgang; Buchmeiser, Michael R..

We report on novel synthetic approaches to molybdenum imido alkylidene N-heterocyclic carbene (NHC) complexes including the first NHC alkylidene complexes featuring pentafluorophenyl-substituted imido ligands, highly basic 6-Mes (6-Mes = 1,3-dimesityl-3,4,5,6-tetrahydropyrimidin-2-ylidene) NHC ligands and the preparation of the first representatives of cationic 14-electron Mo imido alkylidene NHC catalysts bearing sterically demanding anionic terphenoxide ligands. Also, the Mo imido alkylidene and alkylidyne NHC bisalkoxide complexes [Mo(NR)(CHCMe2Ph)(NHC)(OR’)2], [Mo(NH-C6F5)(CCMe2Ph)(aIMes){OCMe(CF3)2}2] (aIMes = 1,3-dimesitylimidazol-5-ylidene, an abnormally C5-bound imidazolylidene) and [Mo(NH-2-CF3-C6H4)(CCMe2Ph)(6-Mes){OCMe(CF3)2}2] are presented. Anionic Mo amido alkylidyne complexes have been found to form preferentially in the presence of sterically demanding NHC and alkoxide ligands. The first Mo imido alkylidene NHC complexes containing the strongly basic 6-Mes ligand, namely [Mo(N-C6F5)(CHCMe2Ph)(6-Mes)(Br)2], [Mo(N-2-CF3-C6H4)(CHCMe2Ph)(6-Mes)(Br)2] and [Mo(N-2,6-Me2-C6H3)(CHCMe2Ph)(6-Mes)(Br)2], were synthesized from the corresponding Mo imido dibromo alkylidene-DME complexes (DME = 1,2-dimethoxyethane) and transformed into their cationic monobromo or monoalkoxide derivatives Finally, we developed the high yield synthesis of Mo imido alkylidene NHC dichloro complexes via direct protonation of [Mo(N-Adamantyl)2(CH2CMe2Ph)2] with HCl followed by stabilization with NHCs.

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Wilson, Daniel W. N.; Urwin, Stephanie J.; Yang, Eric S.; Goicoechea, Jose M. published an article about the compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene( cas:141556-42-5,SMILESS:CC1=CC(C)=CC(C)=C1[N+]2=[C-]N(C3=C(C)C=C(C)C=C3C)C=C2 ).Quality Control of 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:141556-42-5) through the article.

The cyanide ion plays a key role in a number of industrially relevant chem. processes, such as the extraction of gold and silver from low grade ores. Metal cyanide compounds were arguably some of the earliest coordination complexes studied and can be traced back to the serendipitous discovery of Prussian blue by Diesbach in 1706. By contrast, heavier cyanide analogs, such as the cyaphide ion, CP-, are virtually unexplored despite the enormous potential of such ions as ligands in coordination compounds and extended solids. This is ultimately due to the lack of a suitable synthesis of cyaphide salts. Herein the authors report the synthesis and isolation of several magnesium-cyaphido complexes by reduction of iPr3SiOCP with a magnesium(I) reagent. By analogy with Gringard reagents, these compounds can be used for the incorporation of the cyaphide ion into the coordination sphere of metals using a simple salt-metathesis protocol.

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Electric Literature of C21H24N2. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene, is researched, Molecular C21H24N2, CAS is 141556-42-5, about Organic Redox Systems Based on Pyridinium-Carbene Hybrids. Author is Antoni, Patrick W.; Bruckhoff, Tim; Hansmann, Max M..

New redox systems with three oxidation states are highly sought-after, for example, for redox-flow battery applications, selective reducing agents, or organic electronics. Herein, a straightforward and modular synthesis is described of a new class of such a three-state redox system based on the intermol. reaction of a large variety of pyridinium salts with carbenes. These hybrids represent organic (super) electron donors with tailored electrochem. properties and feature three stable oxidation states, which could be fully characterized including by X-ray diffraction. Which electronic factors either promote attainment of stable radicals through one electron transfer or instead favor 2e- processes is elaborated. Indeed, based on X-ray data, a verification for a potential compression mechanism is given that originates through a large structural distortion in the first oxidation event. By geometrically locking this hybridization change, a potential expansion can be realized. The new class of stable organic radicals are highly persistent and even moderately stable toward air. Addnl., it is demonstrated that the modular synthesis approach is also applicable to remarkably strong multielectron (4e-) donors by utilizing bridged pyridinium salts. Based on the stability and reversibility of the new redox system is demonstrated by charge-discharge experiments the use of the hybrid mols. as novel anolyte materials for nonaqueous redox-flow batteries.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene, is researched, Molecular C21H24N2, CAS is 141556-42-5, about C-N and C-H Activation of an N-Heterocyclic Carbene by Magnesium(II) Hydride and Magnesium(I) Complexes.Electric Literature of C21H24N2.

Reactions of the hindered N-heterocyclic carbene, :C{(MesNCH)2} (IMes; Mes = mesityl), with a series of β-diketiminatomagnesium(II) hydride and dimagnesium(I) complexes afforded hydride-bridged and cyclometalated complexes. The reactions involving the magnesium hydrides, [{(ArNacnac)Mg(μ-H)}2] [ArNacnac = [(ArNCMe)2CH]-, where Ar = 2,6-diethylphenyl (Dep) or 2,6-diisopropylphenyl (Dipp)], proceeded via activation of an exocyclic C-N bond of IMes, giving magnesium imidazolyl compounds [(ArNacnac)Mg(μ-H)(μ-Imid)Mg(ArNacnac)] (Imid = [NC2H2N(Mes)C]-) and mesitylene. A low-yield IMes Me C-H activation product, [(DepNacnac)Mg(IMes-H)], was also obtained, via H2 elimination, from the reaction between IMes and [{(DepNacnac)Mg(μ-H)}2]. Reactions between IMes and dimagnesium(I) compounds [{(ArNacnac)Mg}2] [Ar = 2,6-dimethylphenyl (Xyl) or Mes] afforded isostructural C-H activation products [(ArNacnac)Mg(IMes-H)] but in higher yields. D. functional theory calculations suggest that the reactions do not progress via stable adduct complex intermediates, which are sterically inaccessible.

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 141556-42-5, is researched, SMILESS is CC1=CC(C)=CC(C)=C1[N+]2=[C-]N(C3=C(C)C=C(C)C=C3C)C=C2, Molecular C21H24N2Preprint, ChemRxiv called On the bonding situation in stannocene and plumbocene N-heterocyclic carbene complexes, Author is Danes, Sergi; Mueller, Carsten; Wirtz, Lisa; Huch, Volker; Block, Theresa; Poettgen, Rainer; Schaefer, Andre; Andrada, Diego M., the main research direction is bonding energy stannocene plumbocene heterocyclic carbene complex; crystal structure mol stannocene plumbocene heterocyclic carbene complex optimized.Application In Synthesis of 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene.

A detailed exptl. and computational study of a series of stannocene and plumbocene N-heterocyclic carbene complexes is presented. This unique class of group 14 Lewis acid base adducts was obtained from reactions of the corresponding metallocenes and N-heterocyclic carbenes (NHC), and were structurally characterized by single crystal X-ray diffraction. The obtained structures show a perpendicular pose of the NHC with respect to the metallocene, hence precluding the maximal interaction between the moieties. The nature of the Sn-CNHC and Pb-CNHC bonds have been investigated by applying Energy Decomposition Anal. (EDA-NOCV). For the sake of comparison, known stannocene and plumbocene Lewis base complexes have been included in the series. The attractive chem. bonding interactions are around 50% electrostatic, 30% covalent and 20% dispersion. Indeed, dispersion interactions play a determining role the bigger the substituents become. The covalent interactions derive from the donation of the carbene ligand into the empty p orbital of the metallocene.

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