Category: bromides-buliding-blocks

COA of Formula: C8H8Br2In 2019 ,《A Dynamic Tetracationic Macrocycle Exhibiting Photoswitchable Molecular Encapsulation》 was published in Journal of the American Chemical Society. The article was written by Wu, Huang; Chen, Yong; Zhang, Long; Anamimoghadam, Ommid; Shen, Dengke; Liu, Zhichang; Cai, Kang; Pezzato, Cristian; Stern, Charlotte L.; Liu, Yu; Stoddart, J. Fraser. The article contains the following contents:

Designing macrocycles with appropriate mol. recognition features that allow for the integration of suitable external stimuli to control host-guest processes is a challenging endeavor which enables mol. containers to solubilize, stabilize, and sep. chem. entities in an externally controllable manner. Herein, we introduce photo- and thermal-responsive elements into a semi-rigid tetracationic cyclophane, OPVEx2Box4+, that is composed of oligo(p-phenylenevinylene) pyridinium units and the biphenylene-bridged 4,4-bipyridinium extended viologens and adopts a rectangle-like geometry. It transpires that when the photoactive oligo(p-phenylenevinylene) pyridinium unit is incorporated in a macrocyclic scaffold, its reversibility is dramatically improved, and the configurations of the cyclophane can go back and forth between (EE)- and (EZ)-isomers upon alternating blue light irradiation and heating. When the macrocycle is found in its (EE)-configuration, it is capable of binding various π-electron-rich guests-e.g., anthracene and perylene-as well as π-electron-deficient guests-e.g., 9,10-anthraquinone and 5,12-tetracenequinone-through charge-transfer and van der Waals interactions. When irradiated with blue light, the (EE)-isomer of the cyclophane can be transformed successfully to the (EZ)-isomer, resulting in the switching off of the binding affinity for guest mols., which are bound once again upon heating. The use of light and heat as external stimuli to control host-guest interactions involving a multi-responsive host and various guests provides us with a new opportunity to design and construct more-advanced mol. switches and machines. In the part of experimental materials, we found many familiar compounds, such as 1,4-Bis(bromomethyl)benzene(cas: 623-24-5COA of Formula: C8H8Br2)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. In contrast, terrestrial plants account only for a few bromine-containing compounds.COA of Formula: C8H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Computed Properties of C19H18BrPIn 2020 ,《Fitting of experimental viscosity to temperature data for deep eutectic solvents》 was published in Journal of Molecular Liquids. The article was written by Al-Dawsari, Jiyad N.; Bessadok-Jemai, Abdelbasset; Wazeer, Irfan; Mokraoui, Salim; AlMansour, Muath A.; Hadj-Kali, Mohamed K.. The article contains the following contents:

Seven new deep eutectic solvents based on tetrabutylammonium bromide and tetraethylammonium p-toluene sulfonate were prepared and their viscosity determined between 298.15 and 323.15 K. The effect of temperature was modeled using an appropriate fitting procedure, proposed in this work, with a coefficient of determination R2 > 0.99 for all DES. The fitting procedure used of pre-existing exptl. data in which 70 DESs were collected from the literature and refined on the basis of R2 and root mean square error (RMSE); ∼10% of the data was rejected. Furthermore, about half of the refined data was fitted with a three-parameter Vogel-Fulcher-Tammann (VFT) equation with an R2 higher than 0.99. The remaining data were more adequately fitted with a two-parameter Arrhenius equation. The adjusted parameters of both models for 62 DESs were determined to estimate the viscosity. Based on R2, the VFT model was more accurate than the Arrhenius model. Moreover, addnl. in-lab experiments were performed for model validation at six temperatures In some cases, the exptl. measurements were different from those in the literature with an R2 below 0.95 indicating a large scatter in the viscosity data. Most of the highly viscous DESs considered in this study showed a rapid decay when temperature increases. Hence, the limitation of using these solvents for applications such as absorption could be overcome by operating at slightly higher temperature (i.e., 313.15 to 333.15 K). After reading the article, we found that the author used Methyltriphenylphosphonium bromide(cas: 1779-49-3Computed Properties of C19H18BrP)

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is a lipophilic molecule with a cation allowing for it to be used to deliver molecules to specific cell components. Also considered an antineoplastic agent.Computed Properties of C19H18BrP

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Safety of 1,4-Bis(bromomethyl)benzeneIn 2021 ,《Tailoring the Pore Size and Chemistry of Ionic Ultramicroporous Polymers for Trace Sulfur Dioxide Capture with High Capacity and Selectivity》 was published in Angewandte Chemie, International Edition. The article was written by Suo, Xian; Yu, Ying; Qian, Siheng; Zhou, Lin; Cui, Xili; Xing, Huabin. The article contains the following contents:

Here we demonstrate the deep removal of SO2 with high uptake capacity (1.55 mmol g-1) and record SO2/CO2 selectivity (>5000) at ultra-low pressure of 0.002 bar, using ionic ultramicroporous polymers (IUPs) with high d. of basic anions. The successful construction of uniform ultramicropores via polymerizing ionic monomers into IUPs enables the fully exploitation of the selective anionic sites. Notably, the aperture size and surface chem. of IUPs can be finely tuned by adjusting the branched structure of ionic monomers, which play critical roles in excluding CH4 and N2, as well as reducing the coadsorption of CO2. The swelling property of IUPs with adsorption of SO2 contributed to the high SO2 uptake capacity and high separation selectivity. Systematic investigations including static gas adsorption, dynamic breakthrough experiments, stability tests and modeling studies confirmed the efficient performance of IUPs for trace SO2 capture. The results came from multiple reactions, including the reaction of 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Safety of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Due to the reactivity of bromide, they are used as potential precursors or important intermediates in organic synthesis. Safety of 1,4-Bis(bromomethyl)benzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Formula: C5BrMnO5In 2020 ,《In Situ Solution-State Characterization of MOF-Immobilized Transition-Metal Complexes by Infrared Spectroscopy》 was published in ACS Applied Materials & Interfaces. The article was written by Mamlouk, Hind; Elumalai, Palani; Kumar, Manyam Praveen; Aidoudi, Farida H.; Bengali, Ashfaq A.; Madrahimov, Sherzod T.. The article contains the following contents:

Transition metal catalysts immobilized on the surface of MOFs, are being utilized for an ever increasing number of reactions ranging from couplings to olefin oligomerization. While these reactions are usually performed in solution, unlike their homo-geneous counterparts, the insolubility of the MOF systems makes it difficult to obtain detailed mechanistic information by in situ spectroscopic anal. in solution In this report, we present a synthetic method to solubilize these systems by grafting oligomers on the surface of the MOF particles, making it possible to characterize these species by transmission IR spectros-copy. The fundamental photochem. of these catalysts was also studied and compared to that of their homogeneous counterparts. This work establishes a proof of principle for in solution monitoring of heterogeneous catalysts. In the part of experimental materials, we found many familiar compounds, such as Bromopentacarbonylmanganese(I)(cas: 14516-54-2Formula: C5BrMnO5)

Bromopentacarbonylmanganese(I)(cas: 14516-54-2) has many other uses. It is used in the formation of (eta6-arene)tricarbonylmanganese(I) by reacting with arene (arene= hexamethyl benzene, 1,2,4,5-tetramethyl benzene, mesitylene, p-xylene and toluene) in the presence silver salt.Formula: C5BrMnO5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Category: bromides-buliding-blocksIn 2021 ,《Synthesis and anti-inflammatory activity of saponin derivatives of δ-oleanolic acid》 was published in European Journal of Medicinal Chemistry. The article was written by Liu, Liu; Li, Haobin; Hu, Kaiwen; Xu, Qinglong; Wen, Xiaoan; Cheng, Keguang; Chen, Caiping; Yuan, Haoliang; Dai, Liang; Sun, Hongbin. The article contains the following contents:

Pentacyclic triterpenes (PTs) are the active ingredients of many medicinal herbs and pharmaceutical formulations, and are well-known for their anti-inflammatory activity. Recently, the anti-inflammatory effects of AMP-activated protein kinase (AMPK) have also drawn much attention. In this study, the authors found that a variety of naturally occurring PTs sapogenins and saponins could stimulate the phosphorylation of AMPK, and identified δ-oleanolic acid as a potent AMPK activator. Based on these findings, 23 saponin derivatives of δ-oleanolic acid were synthesized in order to find more potent anti-inflammatory agents with improved pharmacokinetic properties. The results of cellular assays showed that saponin I significantly inhibited LPS-induced secretion of pro-inflammatory factors TNF-α and IL-6 in THP1-derived macrophages. Preliminary mechanistic studies showed that I stimulated the phosphorylation of AMPK and acetyl-CoA carboxylase (ACC). The bioavailability of I was significantly improved in comparison with its aglycon. More importantly, I showed significant anti-inflammatory and liver-protective effects in LPS/D-GalN-induced fulminant hepatic failure mice. Taken together, PTs saponins hold promise as therapeutic agents for inflammatory diseases. In the experiment, the researchers used many compounds, for example, (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Category: bromides-buliding-blocks)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

SDS of cas: 623-24-5In 2022 ,《Quantifying the barrier for the movement of cyclobis(paraquat-p-phenylene) over the dication of monopyrrolotetrathiafulvalene》 was published in Organic & Biomolecular Chemistry. The article was written by Kristensen, Rikke; Neumann, Mathias S.; Andersen, Sissel S.; Stein, Paul C.; Flood, Amar H.; Jeppesen, Jan O.. The article contains the following contents:

A bistable [2]pseudorotaxane 1⊂CBPQT·4PF6 and a bistable [2]rotaxane 2·4PF6 have been synthesized to measure the height of an electrostatic barrier produced by double mol. oxidation (0 to +2). Both systems have monopyrrolotetrathiafulvalene (MPTTF) and oxyphenylene (OP) as stations for cyclobis(paraquat-p-phenylene) (CBPQT4+). They have a large stopper at one end while the second stopper in 24+ is composed of a thioethyl (SEt) group and a thiodiethyleneglycol (TDEG) substituent, whereas in 1⊂CBPQT4+, the SEt group has been replaced with a less bulky thiomethyl (SMe) group. This seemingly small difference in the substituents on the MPTTF unit leads to profound changes when comparing the phys. properties of the two systems allowing for the first measurement of the deslipping of the CBPQT4+ ring over an MPTTF2+ unit in the [2]pseudorotaxane. Cyclic voltammetry and 1H NMR spectroscopy were used to investigate the switching mechanism for 1⊂CBPQT·MPTTF4+ and 2·MPTTF4+, and it was found that CBPQT4+ moves first to the OP station producing 1⊂CBPQT·OP6+ and 2·OP6+, resp., upon oxidation of the MPTTF unit. The kinetics of the complexation/decomplexation process occurring in 1⊂CBPQT·MPTTF4+ and in 1⊂CBPQT·OP6+ were studied, allowing the free energy of the transition state when CBPQT4+ moves across a neutral MPTTF unit (17.0 kcal mol-1) or a di-oxidised MPTTF2+ unit (24.0 kcal mol-1) to be determined These results demonstrate that oxidation of the MPTTF unit to MPTTF2+ increases the energy barrier that the CBPQT4+ ring must overcome for decomplexation to occur by 7.0 kcal mol-1. In the experiment, the researchers used many compounds, for example, 1,4-Bis(bromomethyl)benzene(cas: 623-24-5SDS of cas: 623-24-5)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. SDS of cas: 623-24-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis and Structure of Organyltriphenylphosphonium and Stibonium Hexabromoplatinates》 was written by Zykova, A. R.; Sharutin, V. V.; Sharutina, O. K.; Senchurin, V. S.. Related Products of 1530-32-1 And the article was included in Russian Journal of General Chemistry in 2020. The article conveys some information:

Organyltriphenylphosphonium and -stibonium hexabromoplatinates were synthesized by the reaction of potassium hexabromoplatinate with organyltriphenylphosphonium and -stibonium bromides in acetonitrile or water. The complexes [Ph3PC2H5]2[PtBr6] and [Ph3PCH2Ph]2[PtBr6] were obtained by recrystallization from DMSO; the complexes [Ph3PCH2Ph][PtBr5(Et2SO-S)] and [Ph4Sb·Et2SO-O]2[PtBr6], by recrystallization of benzyltriphenylphosphonium and tetraphenylstibonium hexabromoplatinates from di-Et sulfoxide. According to the x-ray data, phosphorus atoms in cations have a distorted tetrahedral coordination and antimony atoms, a distorted trigonal-bipyramidal coordination due caused by the Sb···O:SEt2 interaction. In the experiment, the researchers used Ethyltriphenylphosphonium bromide(cas: 1530-32-1Related Products of 1530-32-1)

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. CatOnium ETPB is also used as catalysts in the synthesis of certain organic compounds.Related Products of 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Garcinoic Acid Is a Natural and Selective Agonist of Pregnane X Receptor》 was written by Bartolini, Desiree; De Franco, Francesca; Torquato, Pierangelo; Marinelli, Rita; Cerra, Bruno; Ronchetti, Riccardo; Schon, Arne; Fallarino, Francesca; De Luca, Antonella; Bellezza, Guido; Ferri, Ivana; Sidoni, Angelo; Walton, William G.; Pellock, Samuel J.; Redinbo, Matthew R.; Mani, Sridhar; Pellicciari, Roberto; Gioiello, Antimo; Galli, Francesco. Recommanded Product: 21085-72-3 And the article was included in Journal of Medicinal Chemistry in 2020. The article conveys some information:

Pregnane X receptor (PXR) is a master xenobiotic-sensing transcription factor and a validated target for immune and inflammatory diseases. The identification of chem. probes to investigate the therapeutic relevance of the receptor is still highly desired. In fact, currently available PXR ligands are not highly selective and can exhibit toxicity and/or potential off-target effects. In this study, we have identified garcinoic acid as a selective and efficient PXR agonist. The properties of this natural mol. as a specific PXR agonist were demonstrated by the screening on a panel of nuclear receptors, the assessment of the phys. and thermodn. binding affinity, and the determination of the PXR-garcinoic acid complex crystal structure. Cytotoxicity, transcriptional, and functional properties were investigated in human liver cells, and compound activity and target engagement were confirmed in vivo in mouse liver and gut tissue. In conclusion, garcinoic acid is a selective natural agonist of PXR and a promising lead compound toward the development of new PXR-regulating modulators. The experimental part of the paper was very detailed, including the reaction process of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Recommanded Product: 21085-72-3)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.Recommanded Product: 21085-72-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis and Analgesic Activity Assessment of Furanolabdanoid Conjugates with Glucuronic Acid》 was written by Brusentseva, O. I.; Kharitonov, Yu. V.; Dolgikh, M. P.; Tolstikova, T. G.; Shul’ts, E. E.. Category: bromides-buliding-blocks And the article was included in Chemistry of Natural Compounds in 2020. The article conveys some information:

Phlomisoic acid reacted with methyl-1-deoxy-2,3,4-tri-O-acetyl-1-bromo-α-D-glucopyranuronate to form the 18-O-β-D-(glucuronopyranoside)-6′-O-Me ester of 15,16-epoxylabda-8(9),13,14-triene. Reductive amination of Me 16-formyl-15,16-epoxylabda-8(9),13,14-trienoate or this β-D-glucuronopyranoside of 16-formyl-15,16-epoxylabda-8(9),13,14-triene by propargylamine in the presence of NaBH4 gave the corresponding 16-propargylaminomethyl-15,16-epoxylabda-8(9),13,14-trienes. Copper-catalyzed azide-alkyne cycloaddition of the new terpenoid alkynes and the propargylamide of phlomisoic acid with Me 1-deoxy-2,3,4-tri-O-acetyl-1-azido-α-D-glucopyranuronate synthesized the corresponding labdanoid glucuronides and diglucuronide. Selective screening of the labdanoid triazolylglucuronides identified compounds with analgesic activity in chem. and thermal irritation tests. In the experiment, the researchers used (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Category: bromides-buliding-blocks)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《trans-Selective Aryldifluoroalkylation of Endocyclic Enecarbamates and Enamides by Nickel Catalysis》 was written by Xu, Chang; Cheng, Ran; Luo, Yun-Cheng; Wang, Ming-Kuan; Zhang, Xingang. Name: 5-Bromobenzo[d][1,3]dioxole And the article was included in Angewandte Chemie, International Edition in 2020. The article conveys some information:

Efficient methods for the dicarbofunctionalization of the cyclic alkenes 2-pyrroline and 2-azetine are limited. Particularly, the dicarbofunctionalization of endocyclic enecarbamates to achieve fluorinated compounds remains an unsolved issue. Reported here is a nickel-catalyzed trans-selective dicarbofunctionalization of N-Boc-2-pyrroline and N-Boc-2-azetine, a class of endocyclic enecarbamates previously unexplored for transition metal catalyzed dicarbofunctionalization. The reaction can be extended to six- and seven-membered endocyclic enamides. A variety of arylzinc reagents and bromodifluoroacetate, and its derivatives, undergo the reaction, providing straightforward and efficient access to an array of pyrrolidine- and azetidine-containing fluorinated amino acids and oligopeptides, which may have applications in the life sciences. The results came from multiple reactions, including the reaction of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Name: 5-Bromobenzo[d][1,3]dioxole)

Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.Name: 5-Bromobenzo[d][1,3]dioxole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary