Category: 576-83-0

Lamola, Jairus L.; Moshapo, Paseka T.; Holzapfel, Cedric W.; Maumela, Munaka Christopher published the artcile< Designing biaryl phosphacyclic ligands: their characterization and evaluation in palladium-catalyzed Suzuki-Miyaura reactions of aryl bromides and chlorides>, Recommanded Product: 2,4,6-Trimethylbromobenzene, the main research area is biaryl preparation; aryl bromide chloride arylboronic acid Suzuki Miyaura cross coupling; palladium catalyst biaryl phosphacyclic ligand.

Efficient palladium catalyst systems based on the combination of bench stable biaryl phosphacycles and Pd(OAc)2 are described for Suzuki-Miyaura cross-coupling reactions of aryl bromides and chlorides. Notably, the electronically and sterically diametric biaryl phosphacycles allowed facile coupling of sterically hindered and heterocyclic substrates.

Phosphorus, Sulfur and Silicon and the Related Elements published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Recommanded Product: 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Frogley, Benjamin J.; Hill, Anthony F.; Shang, Rong; Sharma, Manab; Willis, Anthony C. published the artcile< In Search of Fulminate Analogues: LnMCP:NR>, SDS of cas: 576-83-0, the main research area is carbyne iminophosphino molybdenum tungsten complex fulminate analog preparation; nucleophilic addition iminophosphino carbyne molybdenum tungsten complex; alkylidyne; binuclear; carbyne; fulminate; iminophosphane.

Nucleophilic addition reactions of molybdenum and tungsten iminophosphino-substituted carbyne complexes are explored. The “”CPNR”” ligand may be viewed as being isolobal with fulminate, CNO; however, attempts to prepare a complex of such a ligand resulted instead in a range of novel imino and aminophosphinocarbyne complexes. Metalation-phosphination of carbyne [MoCBr(CO)2(Tp*)] [Tp* = hydrotris(dimethylpyrazolyl)borate] with BuLi and ClP:NMes* (Mes* = 2,4,6-tBi3C6H2) afforded mixtures of the complexes [MoCPBuNHMes*(CO)2(Tp*)] and traces of the bimetallic products [Mo2[μ-C2P2O(NHMes)2](CO)4(Tp*)2] and [Mo2(μ-C2PNHMes)(CO)4(Tp*)2]. The reaction of [WCBr(CO)2(Tp*)] with BuLi and ClP:NMes* afforded predominantly the mononuclear carbyne [W[CP(:NMes*)Bu2](CO)2(Tp*)] and traces of the binuclear complex [W2(μ-C2PNHMes)(CO)4(Tp*)2] which is also obtained when tBuLi is used. Although not isolable, the intended complexes [MCPNMes*(CO)2(Tp*)] could be generated in situ and spectroscopically characterized via the reactions of the stannyl carbynes [MCSnBu3(CO)2(Tp*)] and ClP:NMes*. The preceding observations are mechanistically interpreted with reference to a computational interrogation of the model complex [MoCP:NMe(CO)2(Tp*)], the LUMO of which has considerable phosphorus character.

Chemistry – A European Journal published new progress about Carbyne complexes Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, SDS of cas: 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Adachi, Yohei; Arai, Fuka; Yamada, Kohei; Kurihara, Maho; Ohshita, Joji published the artcile< Optical Properties of Boron-Incorporated Analogues of Tetrathienoanthracene>, Related Products of 576-83-0, the main research area is borepin incorporated analog tetrathienoanthracene preparation emission fluorescence DFT; crystal structure borepin incorporated analog tetrathienoanthracene; mol structure borepin incorporated analog tetrathienoanthracene.

B-introduced aromatic systems have caught the interest of materials chemists because of their unique photophys. properties and tunable Lewis acidity. The authors prepared B-incorporated analogs of tetrathienoanthracene (TTA) containing aromatic borepin rings. Despite the low aromaticity of the borepin rings, the bis-borepins showed high chem. stability and no decomposition in air. The bis-borepins exhibited bluish fluorescence at room temperature and bright greenish phosphorescence at a low temperature The specific electronic structure of the B-incorporated analogs of TTA was revealed by comparing the photophys. properties of the bis-borepins with those of TTA and the parent mono-borepin. The electronic structure was further studied by DFT/TD-DFT calculations Titration experiments using cyanide as the anion revealed the high Lewis acidity and the turn-off fluorescence response of the bis-borepins to the addition of cyanide.

Organometallics published new progress about Anthracenes Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), SPN (Synthetic Preparation), PROC (Process), PREP (Preparation) (borepin-incorporated analogs of tetrathienoanthracene). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Related Products of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gong, Zehao; Wang, Yixin; Yan, Qiang published the artcile< Polymeric partners breathe together: using gas to direct polymer self-assembly via gas-bridging chemistry>, Name: 2,4,6-Trimethylbromobenzene, the main research area is self assembly gas bridging chem polymer breathe.

The quest for a general and facile way to regulate polymer self-assembled nanostructures with low- to high-order ergodicity is an eternal theme in soft nanoparticle fabrication. Here we present an unprecedented gas-bridging strategy that allows to use gas to direct polymer self-assembly in continuous and tunable manners. Such system comprises a partner of frustrated Lewis polymers with bulky Lewis acid and base groups. They can together ′breathe in′ external gases to form gas-bridged structures between the two complementary moieties, which drive their mutual complexation and assemble into polymer nanoparticles of diverse geometries and dimensionalities. This strategy is applicable to a broad family of gas substances including but not limited to carbon oxides, nitrogen oxides, sulfur oxides, and even olefins; moreover, tailoring gas types and levels can dictate distinct assembling evolutionary pathways and deformable behaviors among spherical, fibrous, polymersomal, tubesomal and cubosomal morphologies. We also discover that the gas-based bonding chem. is the mechanistic basis underlying the phase transitional control and phase window regulation. This will open a new direction of making bespoke polymer nanostructures with gas.

Science China: Chemistry published new progress about Alkenes Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Name: 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Shan, Chao; Cao, Liming; Yang, Jiasheng; Cheng, Ruihua; Yao, Xiantong; Liang, Chaoming; Sun, Maolin; Ye, Jinxing published the artcile< Construction of an α-chiral pyrrolidine library with a rapid and scalable continuous flow protocol>, Safety of 2,4,6-Trimethylbromobenzene, the main research area is chloro tert butanesulfinyl imine grignard reagent continuous flow heterocyclization; tert butylsulfinyl pyrrolidine preparation enantioselective diastereoselective.

An α-chiral pyrrolidine library was established via a highly diastereoselective continuous flow protocol under mild conditions. Various functionalized pyrrolidines was obtained in generally high yields (up to 87%) and with superior diastereocontrol within 150 s. The utility of this flow methodol. was further demonstrated by the gram-scale preparation of a κ-opioid receptor selective antagonist Aticaprant intermediate. Moreover, the scale-up in a self-designed microfluidic reactor provided a throughput of 7.45 g h-1, suggesting its potential large-scale applications. The flow procedure afforded rapid, cost-efficient and scalable access to obtain chiral α-substituted pyrrolidines in the compound library.

Reaction Chemistry & Engineering published new progress about Bromoalkanes Role: RCT (Reactant), RACT (Reactant or Reagent). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Safety of 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Renjie; Wang, Yixin; Yan, Qiang published the artcile< CO2-Strengthened Double-Cross-Linked Polymer Gels from Frustrated Lewis Pair Networks>, Quality Control of 576-83-0, the main research area is CO2 strengthened polymer frustrated Lewis pair network; carbon dioxide utilization; double cross-linked networks; frustrated Lewis pairs; polymer gels; stimuli responsive materials.

Conventional thermosets consisting of polymer networks with robust and irreversible chem. linkages are incapable of reshaping or reprocessing once formed. In contrast, reversible non-covalent crosslinks can impart structurally flexible and reconfigurable feature to the networks, but at the expense of certain mech. strength. The integration of fixed covalent bonds and noncovalent bonds into these materials can usually attain enhanced mech. properties and meanwhile provide dynamic and adaptable functions, such as responsive and healing ability to external stimuli. Here a double-crosslinked frustrated Lewis pair network (FLPN) is developed through a specific three-component reaction among triarylborane, triarylphosphine, and CO2, which is composed of permanent chem. crosslinks and dynamic CO2 gas-bridged connections. The amount of CO2 added can regulate the d. of supramol. node in such FLPN, so as to control the strength and toughness of the gel material. Moreover, the broken gel can be rapidly healed by CO2 stimulus through the reconstruction of dynamic covalent network. This study will inspire a new way to create gas-based smart materials by incorporating frustrated Lewis pair chem. into traditional gel system.

Macromolecular Rapid Communications published new progress about Fracture toughness. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Quality Control of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chu, Duc; Ellman, Jonathan A. published the artcile< Three-Component Friedel-Crafts Transformations: Synthesis of Alkyl and Alkenyl Trifluoromethyl Sulfides and Alkenyl Iodides>, Reference of 576-83-0, the main research area is trifluoromethyl arylalkenyl sulfide diastereoselective preparation; arene alkyne trifluoromethyl benzenesulfonamide regioselective three component Friedel Crafts; trifluoromethylthio alkylarene diastereoselective preparation; alkene arene trifluoromethyl benzenesulfonamide regioselective three component Friedel Crafts; iodoalkenyl arene preparation; iodosuccinamide alkyne arene regioselective three component Friedel Crafts reaction.

Straightforward and mild hexafluoroisopropanol (HFIP)-mediated, metal-free, three-component Friedel-Crafts approaches were reported for the synthesis of alkenyl and alkyl trifluoromethyl sulfides from arenes, (PhSO2)2NSCF3 and alkynes or alkenes, resp. The transformations proceeded with high regio- and stereochem. control via the initial formation of cationic thiirenium and thiiranium intermediates, resp., followed by Friedel-Crafts reactions with the arene. A mechanistically related three-component synthesis of alkenyl iodides from arenes, alkenes and N-iodosuccinimide was reported.

Organic Letters published new progress about Alkenes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Reference of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Singh, Puspendra; Singh, Priyanka; Shabbani, Gulam; Butcher, Ray J. published the artcile< Synthesis and single crystal X-ray studies of dimesityl ditelluride: [2,4,6-Me3C6H2Te]2>, Product Details of C9H11Br, the main research area is mesityl ditelluride preparation crystal structure supramol synthon.

The reaction of freshly prepared mesityl magnesium bromide with tellurium powder in anhydrous THF provided the dimesityl ditelluride: [2,4,6-Me3C6H2Te]2. A suitable needle- shaped crystal of dimesityl ditelluride was developed by evaporation of a solution in chloroform. The Te compound was developed with the orthorhombic space group Iba2 with a = 15.2916(7) Å, b = 15.7225(7) Å, c = 14.5272(7) Å and α, β,γ = 90°. The geometry about the central tellurium atoms adopt a bent-shaped geometry with torsion angle C10-Te2-Te1- C1 = 87.0(3)° and this may be considered a cisoid conformation. Intermol. C-H…·Te interactions give rise to a two-dimensional supramol. synthons in its crystalline state. The crystal packing diagram shows Te….H [Te1…·H5A, 3.2557(5) Å & Te1…·H8C, 3.2578(5) Å] hydrogen-bonding interactions which are responsible for associative forces.

Journal of Physics: Conference Series published new progress about Bond angle, torsional. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Product Details of C9H11Br.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Jin; Wang, Yue; Zhang, Yuting; Liu, Ting; Fang, Shuai; Wang, Ruihong; Ma, Yangmin; Fang, Ran; Szostak, Roman; Szostak, Michal published the artcile< Application of Indazolin-3-ylidenes in Catalysis: Steric Tuning of Nonclassical Formally Normal N-Heterocyclic Carbenes with Dual Electronic Character for Catalysis>, Recommanded Product: 2,4,6-Trimethylbromobenzene, the main research area is gold indazolinylidene complex preparation catalyst hydroamination hydrohydrazination reaction alkyne; crystal structure gold indazolinylidene complexes; mol structure gold indazolinylidene complexes; imine preparation; hydrazide preparation; potential energy surface gold catalyzed hydroamination alkyne DFT.

N-Heterocyclic carbenes (NHCs) are pivotal ligands in chem. and catalysis, providing essential tools for the reactivity of metal centers. In particular, the development of nonclassical less heteroatom-stabilized N-heterocyclic carbenes (NHCs) has attracted tremendous attention owing to higher ligand basicity. However, research on the catalytic activity of nonclassical NHCs was challenging due to restrictions in modifying steric environment crucial for catalysis. Herein, the authors report a new class of indazolin-3-ylidene ligands derived from readily available indazole that feature steric differentiation around the metal center. Compared to classical imidazol-2-ylidenes, these ligands feature strongly enhanced σ-donation resulting from re-positioning of one of the N atoms. Simultaneously, the presence of the fused aromatic ring results in strongly enhanced π-accepting properties. The % Vbur is higher than the classic imidazol-2-ylidene IMes ligand. When used as ligands, the sterically differentiated coordination environment of indazolin-3-ylidenes efficiently promote the hydroamination reaction of alkynes to give valuable N-containing motifs, out competing the classical imidazol-2-ylidenes. This protocol also was applied to the challenging hydrohydrazination of alkynes and applied to the late-stage diversification. Comprehensive characterization, coordination chem., as well as the evaluation of steric, σ-donating, and π-accepting properties are demonstrated. Computational studies to gain insight into the reaction mechanism are reported. The authors anticipate that sterically differentiated nonclassical indazolin-3-ylidenes will accelerate the development of well-defined less heteroatom-stabilized N-heterocyclic carbene ligands in transition-metal catalysis.

Organometallics published new progress about Alkylidenes Role: CAT (Catalyst Use), PRP (Properties), SPN (Synthetic Preparation), USES (Uses), PREP (Preparation) (gold indazolinylidene complexes). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Recommanded Product: 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Choudhuri, Khokan; Maiti, Saikat; Mal, Prasenjit published the artcile< Iodine(III) Enabled Dehydrogenative Aryl C-S Coupling by in situ Generated Sulfenium Ion>, Related Products of 576-83-0, the main research area is diaryl sulfide preparation; thiol arene phenyliodo diacetate dehydrogenative coupling reaction; aryl sulfinyl arene preparation; arene thiol phenyliodo diacetate sulfoxidation.

An umpolung based one pot and direct C-S coupling approach under metal free and mild condition were described. Electrophile sulfenium ions were generated in situ from thiols RSH (R = Ph, Et, 4-nitrophenyl, 3-chlorophenyl, etc.) using iodine(III) reagent PhI(OAc)2 (PIDA) and subsequently used for aromatic electrophilic substitution (EArS) to synthesize diaryl sulfides R1SR (R1 = 2,4,6-trimethylphenyl, 4-methoxyphenyl, 2,4-dimethylphenyl, etc.). Also by using of appropriate amount of PIDA, cascaded synthesis of C-S and S=O bonds led to aryl sulfinyl arenes R1S(O)R in one pot. Covalent self-sorting or competitive experiments further confirmed the involvement of sulfenium ion in the EArS.

Advanced Synthesis & Catalysis published new progress about Aromatic hydrocarbons Role: RCT (Reactant), RACT (Reactant or Reagent). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Related Products of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary