800-900 Archives - Chlorides-buliding-blocks

Le, Duy’s team published research in ACS Omega in 2020 | CAS: 172222-30-9

Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9) is the first metathesis catalyst to be widely used in organic synthesis. It is useful for acyclic diene metathesis polymerization (ADMET), Ring-Opening Metathesis Polymerization (ROMP) of strained cyclic olefins, ring opening metathesis (ROM), and so on.Application In Synthesis of Benzylidenebis(tricyclohexylphosphine)dichlororuthenium

《Norbornene-Functionalized Plant Oils for Biobased Thermoset Films and Binders of Silicon-Graphite Composite Electrodes》 was written by Le, Duy; Samart, Chanatip; Lee, Jyh-Tsung; Nomura, Kotohiro; Kongparakul, Suwadee; Kiatkamjornwong, Suda. Application In Synthesis of Benzylidenebis(tricyclohexylphosphine)dichlororuthenium And the article was included in ACS Omega in 2020. The article conveys some information:

We herein report the functionalization of plant oil with norbornene (NB) and subsequent polymerization to prepare biobased thermoset films and biobased binders for silicon/mesocarbon microbead (MCMB) composite electrodes for use in lithium-ion batteries. A series of NB-functionalized plant oils were prepared as biobased thermoset films via ring-opening metathesis polymerization (ROMP) in the presence of a second-generation Grubbs catalyst with tunable thermomech. properties. Increasing the catalyst loading and crosslinking agent increased cross-link d., storage modulus (E′), and glass transition temperature (Tg), while the numbers of unreacted or oligomeric components in the films were reduced. High number of NB rings per triglyceride in the plant oil encouraged monomer incorporation to form a polymer network, therefore accounting for the high Tg and E′ values. Furthermore, the NB-functionalized plant oil and 2,5-norbornadiene (NBD) were copolymerized as bioderived binders for silicone/MCMB composite electrodes of lithium-ion batteries via ROMP during electrode preparation Cell performance investigation showed that the silicone/MCMB composite electrode bearing the NBD-cross-linked NB-functionalized plant oil binder exhibited a higher C-rate and cycle-life performance than that using a conventional poly(vinylidene fluoride) (PVDF) binder. Finally, the electrode based on the bioderived binder exhibited a high specific charge capacity of 620 mA h g-1 at 0.5 C. In addition to this study using Benzylidenebis(tricyclohexylphosphine)dichlororuthenium, there are many other studies that have used Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Application In Synthesis of Benzylidenebis(tricyclohexylphosphine)dichlororuthenium) was used in this study.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Baral, Susil’s team published research in Chem in 2021 | CAS: 172222-30-9

Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9) is a ruthenium-based olefin metathesis catalyst. It is useful for olefin cross metathesis (CM) and ring closing metathesis (RCM) of terminal olefins under a variety of reactions conditions, and so on.Recommanded Product: 172222-30-9

Baral, Susil; Liu, Chunming; Chakraborty, Udit Kumar; Kubo, Kaori; Mao, Xianwen; Coates, Geoffrey W.; Chen, Peng published their research in Chem in 2021. The article was titled 《Single-chain polymerization dynamics and conformational mechanics of conjugated polymers》.Recommanded Product: 172222-30-9 The article contains the following contents:

Conjugated polymers possess unique optoelec. properties. Characterizing their synthesis and mech. processability is crucial for tailored applications. Their poor solubility presents a universal challenge, however. Here, we report a single-mol. study, which circumvents the solubility challenge, of the polymerization kinetics and conformational mechanics of polyacetylene, a prototypical conjugated polymer. We monitor the growth of individual long-chain polyacetylenes during ring-opening metathesis polymerization of cyclooctatetraene. We discover that polyacetylene forms nonequilibrium conformational entanglements, whose kinetic instability and structural looseness appear to render its polymerization more facile than that of polycyclooctene, a nonconjugated analog. This relative kinetics is contrary to monomer reactivity predictions. Moreover, even under identical solvent conditions, individual polyacetylenes show diverse extension-vs.-force scaling behaviors; many span multiple scaling regimes predicted previously but never observed The extracted persistence and Kuhn length of polyacetylene are also significantly shorter than its wavefunction delocalization length, indicating that polyacetylene can maintain backbone conjugation while staying flexible.Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Recommanded Product: 172222-30-9) was used in this study.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Kim, Sundol’s team published research in Polymer in 2022 | CAS: 172222-30-9

In 2022,Kim, Sundol; Kim, Cheoljae; Chung, Hoyong published an article in Polymer. The title of the article was 《N-heterocyclic Carbene Containing Homogeneous Ru Catalyst for Aqueous Atom Transfer Radical Polymerization of Water-soluble Vinyl Monomers》.Recommanded Product: 172222-30-9 The author mentioned the following in the article:

This report presents aqueous atom transfer radical polymerization (ATRP) of commonly used acrylate monomers in the presence of N-Heterocyclic carbene (NHC) containing homogeneous Ru catalyst in neat water. The newly synthesized Ru catalyst includes NHC, which possesses poly(ethylene glycol) (PEG) as a water-soluble component and benzylidene. The water-soluble Ru catalyst enables the polymerization of acrylamide, [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide (SBMA), and PEG Me ether methacrylate. Polymerization with this new catalyst displayed typical ATRP behavior such as a low PDI, a direct linear relationship between mol. weight and conversion, and first-order kinetics. The polySBMA (Mn 335.5 kDa and PDI 1.66) was prepared with 91% conversion at 6 h of reaction time with 0.05 mol% catalyst loading in neat water ([catalyst]:[monomer] = 1:2000 at 80°C). Without the Ru catalyst, the thermally initiated polymerization displayed uncontrolled polymerization (e.g., non-linear kinetics, high PDI, and too fast or slow polymerizations). The Ru catalyst also demonstrated ATRP of the PEG Me ether methacrylate in an organic solvent, acetonitrile. More detailed studies of initiator amount, solvent concentration, and catalyst amount effects were performed. In turn, the new ATRP will add prominent value to the polymer science field as an initial example of Ru-benzylidene catalyzed ATRP in neat water. Addnl., this will promote various applications of environmentally benign polymerization as well as applications in the biomedical field with high-cost efficiency.Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Recommanded Product: 172222-30-9) was used in this study.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Naseri, Iman’s team published research in ACS Omega in 2022 | CAS: 172222-30-9

In 2022,Naseri, Iman; Ziaee, Morteza; Nilsson, Zach N.; Lustig, Danielle R.; Yourdkhani, Mostafa published an article in ACS Omega. The title of the article was 《Electrothermal performance of heaters based on laser-induced graphene on aramid fabric》.Name: Benzylidenebis(tricyclohexylphosphine)dichlororuthenium The author mentioned the following in the article:

Nanostructured heaters based on laser-induced graphene (LIG) are promising for heat generation and temperature control in a variety of applications due to their high efficiency as well as a fast, facile, and highly scalable fabrication process. While recent studies have shown that LIG can be written on a wide range of precursors, the reports on LIG-based heaters are mainly limited to polyimide film substrates. Here, we develop and characterize nanostructured heaters by direct writing of laser-induced graphene on nonuniform and structurally porous aramid woven fabric. The synthesis and writing of graphene on aramid fabric is conducted using a 10.6μm CO2 laser. The quality of laser-induced graphene and elec. properties of the heater fabric is tuned by controlling the lasing process parameters. Produced heaters exhibit good electrothermal efficiency with steady-state temperatures up to 170° when subjected to an input power d. of 1.5 W cm-2. In addition, the permeable texture of LIG-aramid fabric heaters allows for easy impregnation with thermosetting resins. We demonstrate the encapsulation of fabric heaters with two different types of thermosetting resins to develop both flexible and stiff composites. A flexible heater is produced by the impregnation of LIG-aramid fabric by silicone rubber. While the flexible composite heater exhibits inferior electrothermal performance compared to neat LIG-aramid fabric, it shows consistent electrothermal performance under various elec. and mech. loading conditions. A multifunctional fiber-reinforced composite panel with integrated de-icing functionality is also manufactured using one ply of LIG-aramid fabric heater as part of the composite layup. The results of de-icing experiments show excellent de-icing capability, where a 5 mm thick piece of ice is completely melted away within 2 min using an input power of 12.8 W. The experimental process involved the reaction of Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Name: Benzylidenebis(tricyclohexylphosphine)dichlororuthenium)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Eivgi, Or’s team published research in ACS Catalysis in 2021 | CAS: 172222-30-9

Eivgi, Or; Vaisman, Anna; Lemcoff, N. Gabriel published an article in 2021. The article was titled 《Latent, Yet Highly Active Photoswitchable Olefin Metathesis Precatalysts Bearing Cyclic Alkyl Amino Carbene (CAAC)/Phosphite Ligands》, and you may find the article in ACS Catalysis.Computed Properties of C43H72Cl2P2Ru The information in the text is summarized as follows:

The ligand shell that surrounds an active metal center has a paramount effect on its reactivity and properties. In this work, the photoswitchable nature of phosphite olefin metathesis precatalysts and the robustness of cyclic alkyl amino carbene (CAAC) ligands are combined. Also, the synthesis, characterization, and photoactivity of two ruthenium indenylidene complexes bearing a CAAC/phosphite ligand system are reported. Exposure to 405 nm light efficiently activates the precatalysts and promotes a wide range of olefin metathesis reactions. Moreover, the catalysts display formidable latency at ambient temperatures, even with the highly reactive dicyclopentadiene and its derivatives, allowing the preparation of stable monomer-catalyst formulations with a long pot life. In addition, the chemoselectivity of CAAC catalysts is preserved, preventing olefin migration reactions at elevated temperatures and allowing efficient recycling for multiple reaction cycles under air. In the experimental materials used by the author, we found Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Computed Properties of C43H72Cl2P2Ru)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Swan, Stephanie’s team published research in Langmuir in 2020 | CAS: 172222-30-9

《Assembly of Short-Chain Amphiphilic Homopolymers into Well-Defined Particles》 was published in Langmuir in 2020. These research results belong to Swan, Stephanie; Egemole, Franklin O.; Nguyen, SonBinh T.; Kim, Jun-Hyun. Category: chlorides-buliding-blocks The article mentions the following:

Linear homopolymers of norbornene (NBE) derivatives equipped with short-chain alc. pendant groups were prepared by ring-opening metathesis polymerization (ROMP) and subsequently assembled into well-defined structures in alc. solvents. The ratios of hydrophobic carbons and hydrophilic alc. groups at the repeating monomeric unit in these short-chain amphiphilic polymers were found to play an important role in determining the size and distribution of the final globular structures. Unlike the assembly of other linear homo- and copolymers possessing long-chain amphiphilicity, NBE-based linear polymers were readily transformed into spherical particles with a layered conformation, whose sizes range from a few hundred nanometers to micrometers with narrow distributions, simply by controlling the concentration and mol. weights of the linear homopolymers without using any surfactants. In addition, the degree of the intermol. forces with solvents (e.g., solvation) possessing different surface tensions and polarities highly affected the final diameter and distribution of the polymer particles, implying the importance of the selection of a proper solvent to regulate their structural features. As such, understanding the assembly of these types of short-chain homopolymers into uniform particles can allow for regulating the transformation of diverse linear amphiphilic polymers into precisely controlled structures for various applications. In the experiment, the researchers used many compounds, for example, Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Category: chlorides-buliding-blocks)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wang, Qian’s team published research in ACS Catalysis in 2022 | CAS: 172222-30-9

In 2022,Wang, Qian; Lan, Jialing; Liang, Rong; Xia, Yihao; Qin, Lei; Chung, Lung Wa; Zheng, Zhiping published an article in ACS Catalysis. The title of the article was 《New Tricks for an Old Dog: Grubbs Catalysts Enable Efficient Hydrogen Production from Aqueous-Phase Methanol Reforming》.Application of 172222-30-9 The author mentioned the following in the article:

Herein, we report a new application of the prize-winning Grubbs catalysts, which have been widely applied for olefin metathesis, for hydrogen production from aqueous-phase methanol reforming under easily achievable conditions (1 atm, <100°C) with negligible CO formation. Out of the catalysts tested, the best turnover frequency (158 h-1) and turnover number (11424, 72 h) were both achieved with a third-generation Grubbs catalyst (G-III). The best TOF was achieved with G-III and is competitive when compared with some of the best results reported (). Also, G-III is found to be a versatile catalyst for the dehydrogenation of ethanol and formic acid. Mechanistic studies and DFT calculations shed light on the reaction mechanism, which involves an unusual substrate (solvent)-assisted six-membered-ring (σ-bond) metathesis pathway. This work should open up new opportunities in catalyst design in connection with the hydrogen economy and, more generally, with the development of clean and renewable energies. In the experiment, the researchers used Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Application of 172222-30-9)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wang, Qian’s team published research in Organometallics in 2022 | CAS: 172222-30-9

Wang, Qian; Xia, Yihao; Chen, Zhijian; Wang, Yifan; Cheng, Fanrui; Qin, Lei; Zheng, Zhiping published an article in 2022. The article was titled 《Hydrogen Production via Aqueous-Phase Reforming of Ethanol Catalyzed by Ruthenium Alkylidene Complexes》, and you may find the article in Organometallics.Recommanded Product: Benzylidenebis(tricyclohexylphosphine)dichlororuthenium The information in the text is summarized as follows:

A series of ruthenium alkylidene complexes were adopted to catalyze aqueous-phase reforming of ethanol for H2 production at readily achievable temperatures (<100°). The best results were obtained using (SIMes)Ru(PCy3)(3-methyl-2-butenylidene)Cl2 (SIMes, 1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene; PCy3, tricyclohexylphosphine) with a five-day reaction producing a maximum turnover number (TON) of 47,295; this value is the second-largest one known for homogeneously catalyzed ethanol dehydrogenation. Kinetic experiments confirmed that the reforming process undergoes a second-order reaction kinetics, with both ethanol and water contributing to H2 production Analyses of the reaction mixture using an in situ 1H NMR experiment revealed a possible intermediate coordinated with a hydride ligand, based on which and previous work a plausible mechanism was proposed. In addition to this study using Benzylidenebis(tricyclohexylphosphine)dichlororuthenium, there are many other studies that have used Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Recommanded Product: Benzylidenebis(tricyclohexylphosphine)dichlororuthenium) was used in this study.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Mandal, Tirtha’s team published research in ChemCatChem in 2020 | CAS: 172222-30-9

Computed Properties of C43H72Cl2P2RuIn 2020 ,《Domino Relay Olefin Metathesis of Triallyl Oxindole and Indole Precursors to Access Cyclic Indoxyls and Carbazoles》 was published in ChemCatChem. The article was written by Mandal, Tirtha; Dhara, Kalyan; Parui, Nabin; Dash, Jyotirmayee. The article contains the following contents:

Domino relay metathesis sequences using triallyl 3-oxindoles I (R = H, Cl, OMe) and indoles 1,2,3-tris(prop-2-en-1-yl)-1H-indole and 5-chloro-1,2,3-tris(prop-2-en-1-yl)-1H-indole precursor to access C2-quaternary cyclic pseudooxindoles II and carbazole ring systems like 9-(2-propen-1-yl)-9H-carbazole and 3-chloro-9-(2-propen-1-yl)-9H-carbazole have been described. Triallyl 3-oxindoles I undergo domino ring closing metathesis (RCM) and cross metathesis (CM) to provide C2-spirocyclic 3-oxindoles II. Intriguingly, a catalyst specific relay metathesis sequence involving ring closing-ring opening-ring closing and cross metathesis (RC-RO-RC-CM) of these trienes I is established to provide fused bicyclic indoxyl dimers III in high yields. Further, the CM of indoxyl dimer III (R = Cl) with Me acrylate affords a new class of fused monomeric 3-oxindole derivative like Me 4-(8-chloro-10-oxo-1H,4H,10H,10aH-pyrido[1,2-a]indol-10a-yl)but-2-enoate. Moreover, a domino RCM-CM process of triallyl indoles is demonstrated, enabling a quick access to dihydro-carbazoles like 9-(prop-2-en-1-yl)-4,9-dihydro-1H-carbazole, 6-chloro-9-(prop-2-en-1-yl)-4,9-dihydro-1H-carbazole and carbazoles. After reading the article, we found that the author used Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Computed Properties of C43H72Cl2P2Ru)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Nagyhazi, Marton’s team published research in ChemCatChem in 2020 | CAS: 172222-30-9

《Towards Sustainable Catalysis – Highly Efficient Olefin Metathesis in Protic Media Using Phase Labelled Cyclic Alkyl Amino Carbene (CAAC) Ruthenium Catalysts》 was published in ChemCatChem in 2020. These research results belong to Nagyhazi, Marton; Turczel, Gabor; Balla, Aron; Szalas, Gabor; Toth, Imre; Gal, Gyula Tamas; Petra, Bombicz; Anastas, Paul T.; Tuba, Robert. Category: chlorides-buliding-blocks The article mentions the following:

New generations of Hoveyda and bis-carbene type of ruthenium-based olefin metathesis catalysts, containing cationic cyclic alkyl amino carbene (CAAC) ligands, have been synthesized. The catalysts show exceptional stability and activity in environmentally benign, protic media. Various olefin metathesis reactions of OH functionalized feedstock (e. g. RCM, ROMP CM) can be carried out at as low as 0.05 mol % catalyst loading in methanol, isopropanol, water or methanol/water solvent mixture, accomplishing the lowest applied catalyst loading reported so far in these media. The facile olefin metathesis of renewable feedstocks including phospholipids and vegetable oils in protic media has also been demonstrated. After reading the article, we found that the author used Benzylidenebis(tricyclohexylphosphine)dichlororuthenium(cas: 172222-30-9Category: chlorides-buliding-blocks)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics