Tag: 100-200

Total Syntheses Supramolecular Style: Solid-State Construction of [2.2]Cyclophanes with Modular Control of Stereochemistry was written by Friscic, Tomislav;Elacqua, Elizabeth;Dutta, Saikat;Oburn, Shalisa M.;MacGillivray, Leonard R.. And the article was included in Crystal Growth & Design in 2020.Synthetic Route of C6H5ClO2 The following contents are mentioned in the article:

A series of templated solid-state reactions are used to construct the ‘bent’ isomer of the [2.2]cyclophane family of mols. Small-mol. hydrogen-bond-donor templates based on resorcinol complete the supramol. construction of ortho-, meta-, and para-[2.2]cyclophanes in the solid state. The family of exo,exo-dicyclobutyl[2.2]cyclophanes forms regiospecifically in up to quant. yields. The confines of the organic solid state and the modular nature of the template approach allow for the generation of a less stable exo,endo-[2.2]metacyclophane by simply changing the template to enforce a concomitant change in self-assembly. Our results demonstrate the first completed solid-state construction of each member of the family of [2.2]cyclophanes. Small-mol. hydrogen-bond-donor templates based on resorcinol complete the supramol. construction of ortho-, meta-, and para-[2.2]cyclophanes in the solid state. The exo,exo-dicyclobutyl[2.2]cyclophanes and less stable exo,endo-[2.2]metacyclophane form regiospecifically in up to quant. yields. Solid-state fluorescence data of the orthocyclophane exhibits a markedly broader fluorescence envelope and red-shifted λ_max in comparison to the metacyclophanes. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Synthetic Route of C6H5ClO2).

4-Chlororesorcinol (cas: 95-88-5) 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. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Synthetic Route of C6H5ClO2

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

Cobalt Bis(dicarbollide) Alkylsulfonamides: Potent and Highly Selective Inhibitors of Tumor Specific Carbonic Anhydrase IX was written by Gruener, Bohumir;Kugler, Michael;El Anwar, Suzan;Holub, Josef;Nekvinda, Jan;Bavol, Dmytro;Ruzickova, Zdenka;Pospisilova, Klara;Fabry, Milan;Kral, Vlastimil;Brynda, Jiri;Rezacova, Pavlina. And the article was included in ChemPlusChem in 2021.Reference of 75-57-0 The following contents are mentioned in the article:

Carbonic anhydrase IX (CAIX) is an enzyme expressed on the surface of cells in hypoxic tumors. It plays a role in regulation of tumor pH and promotes thus tumor cell survival and occurrence of metastases. Here, derivatives of the cobalt bis(dicarbollide)(1-) anion are reported that are based on substitution at the carbon sites of the polyhedra by two alkylsulfonamide groups differing in the length of the aliphatic connector (from C1 to C4, n = 1-4), which were prepared by cobalt insertion into the 7-sulfonamidoalkyl-7,8-dicarba-nido-undecaborate ions. Pure meso- and rac-diastereoisomeric forms were isolated. The series is complemented with monosubstituted species (n = 2). Synthesis by a direct method furnished similar derivatives (n = 2, 3), which are chlorinated at the B(8,8� boron sites. All compounds inhibited CAIX with subnanomolar inhibition constants and showed high selectivity for CAIX. The best inhibitory properties were observed for the compound with n = 3 and two substituents present in rac-arrangement with K_i = 20 pM and a selectivity index of 668. X-ray crystallog. was used to study interactions of these compounds with the active site of CAIX on the structural level. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Reference of 75-57-0).

Tetramethylammonium chloride (cas: 75-57-0) 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. 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.Reference of 75-57-0

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

Evolving a Unique Red-Emitting Fluorophore with an Optically Tunable Hydroxy Group for Imaging Nitroreductase in Cells, in Tissues, and in Vivo was written by Peng, Rong;Yuan, Jie;Cheng, Dan;Ren, Tianbing;Jin, Fangping;Yang, Ronghua;Yuan, Lin;Zhang, Xiaobing. And the article was included in Analytical Chemistry (Washington, DC, United States) in 2019.Recommanded Product: 95-88-5 The following contents are mentioned in the article:

Fluorescence mol. imaging has attracted more and more attention due to its various advantages. Lots of fluorophores have been developed to meet various mol. imaging needs. However, it is still inconvenient due to lack excellent fluorophores with an optically tunable group for biol. mol. imaging. Here, a new platform of the versatile long wavelength fluorophore with an optically tunable hydroxyl group was successfully developed by regulating mol. planarity and twisted intramol. charge transfer effect with protected and deprotected-hydroxyl group approach via “step by step” modifying strategy. As an excellent representative of this new type fluorophore, LDOH-4 performs good chem. and optical properties, and shows a potential application prospect. As a proof-of-concept, a nitroreductase-activated TP fluorescent probe LDO-NTR was designed, which not only sensitively recognize NTR with more than 310-fold response signal enhancement in vitro, but also tracking NTR in hypoxia tumor mouse in vivo by using two-photon imaging. It is hopeful that the long wavelength fluorophore with the optically tunable hydroxyl group can serve as a useful platform to extend capable detection tools in biol. chem. and biomedical applications. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Recommanded Product: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Recommanded Product: 95-88-5

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

Near infrared fluorogenic probe as a prodrug model for evaluating cargo release by nanoemulsions was written by Bou, Sophie;Wang, Xinyue;Anton, Nicolas;Klymchenko, Andrey S.;Collot, Mayeul. And the article was included in Journal of Materials Chemistry B in 2020.Safety of 4-Chlororesorcinol The following contents are mentioned in the article:

Nanoemulsions (NEs) are biocompatible and stealth nanodroplets that can efficiently encapsulate hydrophobic cytoactive drugs in their oily core. NEs were shown to accumulate in tumors by enhanced permeability and retention (EPR) effect and thus display appealing features as nanocarriers to selectively deliver drugs to the tumors. However, to ensure efficient encapsulation with minimal early release, drugs must possess a high degree of lipophilicity. To circumvent this limitation, the latter could be transformed into prodrugs with enhanced hydrophobicity. In return, once delivered in the cell, the prodrug must be efficiently transformed into its active drug form. Herein we chem. and reversibly modified a near IR Huda dye (HD) into pro-fluorophore (Pro-HD), a non-fluorescent and lipophilic prodrug model that was efficiently loaded in NEs. Thanks to the fluorogenecity of the system (fluorescence enhancement of 35-fold at 723 nm), we demonstrated that Pro-HD did not leak out of NEs, was efficiently delivered into cancer cells and was transformed in cellulo into HD. This proof of concept demonstrates the high potential of lipophilic “pro-fluorophore” approach for visualizing delivery of cargos using NEs as nanocarriers. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Safety of 4-Chlororesorcinol).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. 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.Safety of 4-Chlororesorcinol

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

Enhanced Oil Recovery Potential of Alkyl Alcohol Polyoxyethylene Ether Sulfonate Surfactants in High-Temperature and High-Salinity Reservoirs was written by Liu, Rui;Du, Dai-jun;Pu, Wan-fen;Zhang, Jing;Fan, Xi-bin. And the article was included in Energy & Fuels in 2018.Quality Control of Sodium 2-chloroethanesulfonate hydrate The following contents are mentioned in the article:

Surfactant flooding has been widely applied in high-temperature and high-salinity reservoirs. In this paper, the enhanced oil recovery potential of alkyl alc. polyoxyethylene ether sulfonate (CEOS) was investigated in a combined study of surface activity, crude oil-water interfacial tension (IFT) reduction, emulsifying property, wettability improvement, and macroscopic oil displacement efficiency. The results illustrated that CEOS had high surface activity and IFT could be reduced to an ultralow level (10^-3 mN/m) at high-temperature and high-salinity conditions. When salinity ranged from 15 × 10⁴ to 22.5 × 10⁴ mg/L and reservoir permeability was âˆ?0 mD, linear CEOS solution could effectively displace crude oil for its favorable IFT reduction ability. Linear CEOS or CEOS with a benzene ring was optimized for their favorable IFT reduction ability or emulsifying ability when reservoir permeability was âˆ?0 mD or non-homogeneous. A 0.5 pore volume surfactant flooding and subsequent water flooding could remarkably enhance oil recovery to 16.19-19.38%. All of the results indicated that CEOS has great potential for improving oil recovery in high-temperature and high-salinity oil reservoirs. This study involved multiple reactions and reactants, such as Sodium 2-chloroethanesulfonate hydrate (cas: 1089719-72-1Quality Control of Sodium 2-chloroethanesulfonate hydrate).

Sodium 2-chloroethanesulfonate hydrate (cas: 1089719-72-1) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Quality Control of Sodium 2-chloroethanesulfonate hydrate

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

Inhibition of Non-specific Amplification in Loop-Mediated Isothermal Amplification via Tetramethylammonium Chloride was written by Jang, MinJu;Kim, Sanghyo. And the article was included in BioChip Journal in 2022.SDS of cas: 75-57-0 The following contents are mentioned in the article:

Loop-mediated isothermal amplification (LAMP) may be used in mol. and point-of-care diagnostics for pathogen detection. The amplification occurs under isothermal conditions using up to six primers. However, non-specific amplification is frequently observed in LAMP. Non-specific amplification has the potential to be triggered by forward and reverse internal primers. And the relatively low reaction temperature (55-65°C) induces the secondary structure via primer-primer interactions. Primer redesign and probe design have been recommended to solve this problem. LAMP primers have strict conditions, such as Tm, GC contents, primer dimer, and distance between primers compared to conventional PCR primers. Probe design requires specialized knowledge to have high specificity for a target. In polymerase chain reaction (PCR), some chems. or proteins are used for improving specificity and efficiency. Therefore, we hypothesized that additives can suppress the non-specific amplification. In this study, tetramethylammonium chloride (TMAC), formamide, DMSO, Tween 20, and bovine serum albumin have been used as LAMP additives. In our study, TMAC was presented as a promising additive for suppressing non-specific amplification in LAMP. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0SDS of cas: 75-57-0).

Tetramethylammonium chloride (cas: 75-57-0) 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.SDS of cas: 75-57-0

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

Methane oxidation to methyl trifluoroacetate by simple anionic palladium catalyst: Comprehensive understanding of K₂S₂O₈-based methane oxidation in CF₃CO₂H was written by Cheong, Seok-Hyeon;Kim, Daeun;Dang, Huyen Tran;Kim, Dongwook;Seo, Bora;Cheong, Minserk;Hong, Soon Hyeok;Lee, Hyunjoo. And the article was included in Journal of Catalysis in 2022.SDS of cas: 75-57-0 The following contents are mentioned in the article:

The partial oxidation of methane to Me trifluoroacetate (MeTFA) in trifluoroacetic acid (HTFA) is one of the most selective methane conversion reactions. We report that the simple anionic form of palladium, PdCl₂-4 can effectively convert methane to MeTFA compared to neutral PdCl₂ in the K₂S₂O₈-HTFA oxidation system. The anionic catalyst form appears to increase the Pd solubility in the polar protic HTFA solvent, thereby facilitating transformation to PdTFA2-4 which is supposed to be the real catalytic species in this PdCl₂-4 – catalyzed methane oxidation It was found that not only methane oxidation but also solvent HTFA oxidation proceeded to a substantial degree, which limited the yield of MeTFA by consuming the oxidant, K₂S₂O₈. Furthermore, for the first time, the role of trifluoroacetic anhydride (TFAA) was identified; it removes water produced by KHSO4 and HF, which are the reduced form of K₂S₂O₈ and the oxidation byproduct of HTFA, resp. The reaction equations for methane to MeTFA, and HTFA to CO₂ in K₂S₂O₈-HTFA system are suggested. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0SDS of cas: 75-57-0).

Tetramethylammonium chloride (cas: 75-57-0) 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. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).SDS of cas: 75-57-0

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

Controlling quantum-beating signals in 2D electronic spectra by packing synthetic heterodimers on single-walled carbon nanotubes was written by Wang, Lili;Griffin, Graham B.;Zhang, Alice;Zhai, Feng;Williams, Nicholas E.;Jordan, Richard F.;Engel, Gregory S.. And the article was included in Nature Chemistry in 2017.Computed Properties of C6H5ClO2 The following contents are mentioned in the article:

In multidimensional spectroscopy, dynamics of coherences between excited states report on the interactions between electronic states and their environment. The prolonged coherence lifetimes revealed through beating signals in the spectra of some systems may result from vibronic coupling between nearly degenerate excited states, and recent observations confirm the existence of such coupling in both model systems and photosynthetic complexes. Understanding the origin of beating signals in the spectra of photosynthetic complexes has been given considerable attention; however, strategies to generate them in artificial systems that would allow us to test the hypotheses in detail are still lacking. Here we demonstrate control over the presence of quantum-beating signals by packing structurally flexible synthetic heterodimers on single-walled carbon nanotubes, and thereby restrict the motions of chromophores. Using two-dimensional electronic spectroscopy, we find that both limiting the relative rotation of chromophores and tuning the energy difference between the two electronic transitions in the dimer to match a vibrational mode of the lower-energy monomer are necessary to enhance the observed quantum-beating signals. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Computed Properties of C6H5ClO2).

4-Chlororesorcinol (cas: 95-88-5) 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. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Computed Properties of C6H5ClO2

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

A turn-on fluorescence-based fibre optic sensor for the detection of mercury was written by Nguyen, T. Hien;Sun, Tong;Grattan, Kenneth T. V.. And the article was included in Sensors in 2019.Synthetic Route of C6H9ClO3 The following contents are mentioned in the article:

The design, development, and evaluation of an optical fiber sensor for the detection of Hg2+ in aqueous media are discussed in detail in this paper. A novel fluorescent polymeric material for Hg2+ detection, based on a coumarin derivative (acting as the fluorophore) and an azathia crown ether moiety (acting as the mercury ion receptor), has been synthesized. The fluorophore was covalently immobilized onto the fiber surface by polymerization using the ion imprinting technique and exhibited a significant increase in fluorescence intensity in response to Hg2+ via a photoinduced electron transfer (PET) mechanism. The sensor provided a response over a concentration range of 0-28μM with an acceptable response rate of around 11 min and a recovery rate of around 30 min in a Tris-EDTA buffer solution A detection limit of 0.15μM was obtained with a possibility of improvement by changing the thickness of the polymer layer and using a more sensitive detector. High-quality performance is seen through a high selectivity for Hg2+ over other metal ions, excellent photo-stability and reversibility which was also demonstrated, making this type of sensor potentially well suited for in-situ monitoring of mercury in the environment. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Synthetic Route of C6H9ClO3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. 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.Synthetic Route of C6H9ClO3

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