Month: November 2022

Building of hierarchical structure of functionalized montmorillonite anchored with ZnO: Toward fabricating high-performance polyethylene composite was written by Wang, Junling;Wang, Bibo;Ma, Chao;Xiao, Yuling;Guo, Wenwen;Cai, Wei;Song, Lei;Wang, Xin;Hu, Yuan. And the article was included in Applied Clay Science in 2020.Application of 122-18-9 The following contents are mentioned in the article:

As is well known, polyethylene (PE) is flammable with the release of abundant heat, confirming its low fire safety. Consequently, the extended application of PE is restrained. In this work, we propose the facile preparation of multi-component hybrid (functionalized montmorillonite anchored with ZnO, defined as FMZH) and its promising utilization in PE. With the aid of functionalized compound, the obtained hybrid shows good dispersion state, as well as strong interfacial interaction with polymer matrix. By incorporating FMZH fillers, the marked reductions in peak heat release rate (PHRR) and total heat release (THR) can be obtained, corroborating the enhanced fire safety. Specifically, with the addition of 5.0 wt% 1-2FMZH and 1-4FMZH, the PHRR values are reduced to 567 and 667 kW/m2, resp., corresponding to 54.7 and 46.8% decrease. Also, the suppressing effect on the release of decomposition fragments can be evidenced by the decreased absorbance intensity in FTIR spectra. Furthermore, the presence of these fillers shows marginal influence on the nonisothermal crystallization behavior of PE. Addnl., the FMZH composite with hierarchical structure shows superior gas barrier function over pristine ZnO and montmorillonite. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Application of 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Application of 122-18-9

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

Crystallinity improvement of poly(heptazine imide) for high photocatalytic hydrogen evolution was written by An, Wenshu;Zhi, Xiaojuan;Zhai, Boyin;Niu, Ping;Wang, Shulan;Li, Li. And the article was included in Scripta Materialia in 2022.Related Products of 7447-41-8 The following contents are mentioned in the article:

As the crystalline phase of g-C₃N₄, poly(heptazine imide) (PHI) is attracting increasing attention recently due to its advantages in light absorption and charge transfer compared with the commonly studied g-C₃N₄ with Melon structure. Crystallinity engineering to further enhance its crystallinity may significantly improve the photocatalytic performances and thus the effective strategy is highly desirable. Herein, we propose a post-thermal treatment assisted ionothermal protocol to achieve the crystallinity elevation of PHI. By simply adding an extra annealing step in thermal polycondensation of precursors to tune Melon structure, the recondensation process for PHI synthesis was directly modified, leading to the formation of high-crystalline product. The synthesized materials therefore presented decreased interlayer stacking distance, narrowed bandgap and improved charge transfer/separation kinetics, which remarkably enhanced the visible-light photocatalytic activities of PHI. This work provides references for structural modifications of high-crystalline g-C₃N₄ based materials, which may inspire new ideas for the design of high-performance photocatalysts. This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8Related Products of 7447-41-8).

Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Related Products of 7447-41-8

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

Molecular modeling and docking studies of new antioxidant pyrazole-thiazole hybrids was written by Alia Abdulaziz Alfi;Alharbi, Arwa;Qurban, Jihan;Abualnaja, Matokah M.;Abumelha, Hana M.;Saad, Fawaz A.;El-Metwaly, Nashwa M.. And the article was included in Journal of Molecular Structure in 2022.Reference of 638-07-3 The following contents are mentioned in the article:

The phenoxyacetamide moiety was used as a link bridge in the synthesis of a series of novel pyrazole-integrated thiazole derivs I, II [Ar = 4-ClC₆H₄] and III [R¹ = Me, CH₂CO₂Et, 4-ClC₆H₄; R² = H, C(O)Me]. The condensation of the precursor 2-(4-formylphenoxy)-N-(3-methyl-1H-pyrazol-5-yl)acetamide with thiosemicarbazide resulted in the formation of the corresponding thiosemicarbazone, which reacted with several α-halogenated carbonyl reagents, to afford the targeted pyrazole-thiazole derivs I, II and III. The geometrically optimized structures, in addition to the HOMO-LUMO configuration and energies of the investigated compounds I, II and III, were obtained from DFT calculations Also, the synthesized pyrazolyl-thiazole compounds I, II and III were tested to appraise their antioxidant activity. The theor. studies through mol. docking were carried out to imitate their antioxidant reactivity for the produced pyrazole-thiazole derivatives This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Reference of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Reference of 638-07-3

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

New scaffolds of inhibitors targeting the DNA binding of NF-κB was written by Kobayashi, Takanobu;Tanuma, Sei-ich;Kino, Katsuhito;Miyazawa, Hiroshi. And the article was included in Integrative Molecular Medicine in 2016.Safety of 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine The following contents are mentioned in the article:

Nuclear factor-kappa B (NF-κB) has numerous pathophysiol. functions and is therefore considered a suitable target in the search for drugs to treat many diseases, including cancers and inflammatory diseases. We previously reported a novel triazine-based NF-κB inhibitor, 4,6-dichloro-N-phenyl-1,3,5-triazin-2-amine (NI241), which directly inhibits binding of NF-κB to DNA. We predicted the mode of binding between NI241 and p50 (a member of NF-κB family) using in silico docking simulations. Here, we searched for new NF-κB inhibitors using structure-based virtual screening (SBVS), a computational method widely used to identify candidate compounds in drug discovery. In the present study, we performed SBVS with the docking simulation program Glide and selected 33 compounds from our virtual chem. library. Subsequently, we investigated the NF-κB inhibitory effects of these compounds using electrophoretic mobility shift assays. We identified two compounds that inhibited the DNA binding of p50. Although these compounds were less effective than NI241 as NF-κB inhibitors, they have new scaffold structures and provide clues that will aid future efforts to identify novel compounds that specifically inhibit the binding of NF-κB to DNA. This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Safety of 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine).

4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Safety of 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine

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

Novel chalcone-conjugated, multi-flexible end-group coumarin thiazole hybrids as potential antibacterial repressors against methicillin-resistant Staphylococcus aureus was written by Hu, Yuanyuan;Hu, Chunfang;Pan, Guangxing;Yu, Congwei;Ansari, Mohammad Fawad;Yadav Bheemanaboina, Rammohan R.;Cheng, Yu;Zhou, Chenghe;Zhang, Jiaheng. And the article was included in European Journal of Medicinal Chemistry in 2021.Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate The following contents are mentioned in the article:

The increasing resistance of methicillin-resistant Staphylococcus aureus (MRSA) to antibiotics has led to a growing effort to design and synthesize novel structural candidates of chalcone-conjugated, multi-flexible end-group coumarin thiazole hybrids with outstanding bacteriostatic potential. Bioactivity screening showed that hybrid 5i, which was modified with methoxybenzene, exerted a significant inhibitory activity against MRSA (MIC = 0.004 mM), which was 6 times better than the anti-MRSA activity of the reference drug norfloxacin (MIC = 0.025 mM). Compound 5i neither conferred apparent resistance onto MRSA strains even after multiple passages nor triggered evident toxicity to human hepatocyte LO2 cells and normal mammalian cells (RAW 264.7). Mol. docking showed that highly active mol. 5i might bind to DNA gyrase by forming stable hydrogen bonds. In addition, mol. electrostatic potential surfaces were developed to explain the high antibacterial activity of the target compounds Furthermore, preliminary mechanism studies suggested that hybrid 5i could disrupt the bacterial membrane of MRSA and insert itself into MRSA DNA to impede its replication, thus possibly becoming a potential antibacterial repressor against MRSA. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate

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

Synergetic effect between Pd²⁺ and Ir⁴⁺ species promoting direct ethane dehydrogenation into ethylene over bimetallic PdIr/AC catalysts was written by Zhang, Ling;Sun, Jikai;Jiang, Shuchao;He, Huijie;Ren, Guoqing;Zhai, Dong;Tu, Rui;Zhai, Shengliang;Yu, Tie. And the article was included in Catalysis Science & Technology in 2022.Electric Literature of Cl4Na2Pd The following contents are mentioned in the article:

This work reported an efficient PdIr/activated carbon (PdIr/AC) catalyst and its application during direct ethane dehydrogenation (EDH) into ethane. The XRD and HADDF-STEM results revealed Pd/Ir nano-particles and atomically dispersed Pd²⁺ and Ir⁴⁺ species simultaneously. The activity tests demonstrated that Ir species showed higher C₂H₄ selectivity than Pd species and the co-presence of Pd/Ir could further improve the catalytic stability and inhibit carbon deposition over the bimetallic Pd/Ir catalyst. Nevertheless, raising the reaction temperature from 500°C to 600°C boosted coking including carbon nanotubes (CNTs) and carbon particles. XPS results of Pd7Ir2/AC-B after Ar or H₂ pretreatment proved that the active sites are Pd²⁺/Ir⁴⁺ species. The simulation results exposed the reaction pathway over Ir⁴⁺/Pd²⁺ species, and ethane dehydrogenation was the rate-determining step over the PdIr/AC sample; meanwhile, the synergetic effect between Pd²⁺ and Ir⁴⁺ increased their TOF (C₂H₄). Finally, a deactivation mechanism was also proposed to examine the coking over various metal species. This study involved multiple reactions and reactants, such as Sodium tetrachloropalladate(II) (cas: 13820-53-6Electric Literature of Cl4Na2Pd).

Sodium tetrachloropalladate(II) (cas: 13820-53-6) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Electric Literature of Cl4Na2Pd

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

Efficient Asymmetric Synthesis of Ethyl (S)-4-Chloro-3-hydroxybutyrate Using Alcohol Dehydrogenase SmADH31 with High Tolerance of Substrate and Product in a Monophasic Aqueous System was written by Yang, Zeyu;Ye, Wenjie;Xie, Youyu;Liu, Qinghai;Chen, Rong;Wang, Hualei;Wei, Dongzhi. And the article was included in Organic Process Research & Development in 2020.Application of 638-07-3 The following contents are mentioned in the article:

Bioredns. catalyzed by alc. dehydrogenases (ADHs) play an important role in the synthesis of chiral alcs. However, the synthesis of Et (S)-4-chloro-3-hydroxybutyrate [(S)-CHBE], an important drug intermediate, has significant challenges concerning high substrate or product inhibition toward ADHs, which complicates its production Herein, we evaluated a novel ADH, SmADH31, obtained from the Stenotrophomonas maltophilia genome, which can tolerate extremely high concentrations (6 M) of both substrate and product. The coexpression of SmADH31 and glucose dehydrogenase from Bacillus subtilis in Escherichia coli meant that as much as 660 g L^-1 (4.0 M) Et 4-chloroacetoacetate was completely converted into (S)-CHBE in a monophasic aqueous system with a >99.9% ee value and a high space-time yield (2664 g L^-1 d^-1). Mol. dynamics simulation shed light on the high activity and stereoselectivity of SmADH31. Moreover, five other optically pure chiral alcs. were synthesized at high concentrations (100-462 g L^-1) as a result of the broad substrate spectrum of SmADH31. All these compounds act as important drug intermediates, demonstrating the industrial potential of SmADH31-mediated bioredns. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Application of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Application of 638-07-3

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

Genome-based discovery and total synthesis of janustatins, potent cytotoxins from a plant-associated bacterium was written by Ueoka, Reiko;Sondermann, Philipp;Leopold-Messer, Stefan;Liu, Yizhou;Suo, Rei;Bhushan, Agneya;Vadakumchery, Lida;Greczmiel, Ute;Yashiroda, Yoko;Kimura, Hiromi;Nishimura, Shinichi;Hoshikawa, Yojiro;Yoshida, Minoru;Oxenius, Annette;Matsunaga, Shigeki;Williamson, R. Thomas;Carreira, Erick M.;Piel, Jorn. And the article was included in Nature Chemistry in 2022.Product Details of 7447-41-8 The following contents are mentioned in the article:

Host-associated bacteria are increasingly being recognized as underexplored sources of bioactive natural products with unprecedented chem. scaffolds. A recently identified example is the plant-root-associated marine bacterium Gynuella sunshinyii of the chem. underexplored order Oceanospirillales. Its genome contains at least 22 biosynthetic gene clusters, suggesting a rich and mostly uncharacterized specialized metabolism Here, in silico chem. prediction of a non-canonical polyketide synthase cluster has led to the discovery of janustatins, structurally unprecedented polyketide alkaloids with potent cytotoxicity that are produced in minute quantities. A combination of MS and two-dimensional NMR experiments, d. functional theory calculations of 13C chem. shifts and semiquant. interpretation of transverse rotating-frame Overhauser effect spectroscopy data were conducted to determine the relative configuration, which enabled the total synthesis of both enantiomers and assignment of the absolute configuration. Janustatins feature a previously unknown pyridodihydropyranone heterocycle and an unusual biol. activity consisting of delayed, synchronized cell death at subnanomolar concentrations [graphic not available: see fulltext] This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8Product Details of 7447-41-8).

Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Product Details of 7447-41-8

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

A Strained Ion Pair Permits Carbon Dioxide Fixation at Atmospheric Pressure by C-H H-Bonding Organocatalysis was written by Xu, Jiaxi;Xian, Anmei;Li, Zhenjiang;Liu, Jingjing;Zhang, Zhihao;Yan, Rui;Gao, Luoyu;Liu, Bo;Zhao, Lili;Guo, Kai. And the article was included in Journal of Organic Chemistry in 2021.Synthetic Route of C4H12ClN The following contents are mentioned in the article:

The cycloadditions of carbon dioxide into epoxides to afford cyclic carbonates by H-bond donor (HBD) and onium halide (X) cocatalysis have emerged as a key strategy for CO₂ fixation. However, if the HBD is also a halide receptor, the two will quench each other, decreasing the catalytic activity. Here, we propose a strained ion pair tris(alkylamino)cyclopropenium halide (TAC·X), in which TAC repels X. TAC possesses a pos. charged cyclopropenium core that makes the vicinal C-H or N-H a nonclassical HBD. The interionic strain within TAC·X makes TAC a more electrophilic HBD, allowing it to activate the oxygen of the epoxide and making X more nucleophilic and better able to attack the methylene carbon of the epoxide. NMR titration spectra and computational studies were employed to probe the mechanism of the cycloaddition of CO₂ to epoxides reactions under the catalysis of TAC·X. The ¹H and ¹³C{¹H}NMR titration spectra of the catalyst with the epoxide substrate unambiguously confirmed H-bonding between TAC and the epoxide. DFT computational studies identified the transition states in the ring-opening of the epoxide (TS1) and in the ring-closure of the cyclic carbonate (TS2). This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Synthetic Route of C4H12ClN).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Synthetic Route of C4H12ClN

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

Fe₃O₄@C@OSO₃H as an efficient, recyclable magnetic nanocatalyst in Pechmann condensation: green synthesis, characterization, and theoretical study was written by Samiei, Zahra;Soleimani-Amiri, Somayeh;Azizi, Zahra. And the article was included in Molecular Diversity in 2021.Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate The following contents are mentioned in the article:

Novel sulfonated carbon-coated magnetic nanoparticles (SCCMNPs; Fe₃O₄@C@OSO₃H) were designed, synthesized, characterized, and applied as an efficient nanocatalyst for green synthesis of coumarin derivatives through Pechmann condensation. The Fe₃O₄@C@OSO₃H was manufactured through a simple and inexpensive two-step procedure and characterized by FTIR, EDX, XRD, SEM, TEM, DLS, VSM, and TGA techniques. It was identified as an efficient heterogeneous catalyst in the Pechmann condensation of phenol derivatives and β-ketoesters, leading to high-yield coumarin derivatives under solvent-free conditions. The Fe₃O₄@C@OSO₃H removed after reaction finishing point by an external magnet, and it was reused fifteen times at the same conditions. Besides, theor. studies were carried out using B3LYP/6-311++G(d,p) to more consideration of the reaction mechanism. The study of the frontier MOs, NBO at. charges, mol. electrostatic potential of reactants, as well as Pechmann condensation mechanism was known very useful in suitable reactant choice. The reaction was performed through the electrophilic attack, dehydration, and trans-esterification, resp. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate

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