Category: chlorides-buliding-blocks

Medusheva, E. O. published the artcilePossibilities of molecular modeling of cellulose in fabrication of therapeutically active textile materials, Synthetic Route of 38146-42-8, the publication is Fibre Chemistry (2009), 41(1), 34-37, database is CAplus.

Highly effective means of stopping capillary-parenchymatous bleeding – one of the main causes of death in people from 1 to 34 years of age in traffic accidents – were developed. Biol. active wound dressings that reduce purulent-necrotic wound cleansing time by 3 times, healing time by 2.5 times, and hospital stays by 6 times were developed.

Fibre Chemistry published new progress about 38146-42-8. 38146-42-8 belongs to chlorides-buliding-blocks, auxiliary class Achiral Phase-Transfer Catalysts, name is N1,N10-Bis(2-((2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-N1,N1,N10,N10-tetramethyldecane-1,10-diaminium chloride, and the molecular formula is C38H74Cl2N2O4, Synthetic Route of 38146-42-8.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Nguyen, H. published the artcileCigarette smoke impairs neutrophil respiratory burst activation by aldehyde-induced thiol modifications, Application In Synthesis of 33697-81-3, the publication is Toxicology (2001), 160(1-3), 207-217, database is CAplus and MEDLINE.

Exposure to airborne pollutants such as tobacco smoke is associated with increased activation of inflammatory-immune processes and is thought to contribute to the incidence of respiratory tract disease. We hypothezised that cigarette smoke (CS) could synergize with activated inflammatory/immune cells to cause oxidative injury or result in the formation of unique reactive oxidants. Isolated human neutrophils were exposed to gas-phase CS, and the production of nitrating and chlorinating oxidants following neutrophil stimulation was monitored using the substrate 4-hydroxyphenylacetate (HPA). Stimulation of neutrophils in the presence of CS resulted in a reduced oxidation and chlorination of HPA, suggesting inhibition of NADPH oxidase or myeloperoxidase (MPO), the two major enzymes involved in inflammatory oxidant formation. Peroxidase assays demonstrated that neutrophil MPO activity was not significantly affected after CS-exposure, leaving the NADPH oxidase as a likely target. The inhibition of neutrophil oxidant formation was found to coincide with depletion of cellular GSH, and a similar modification of critical cysteine residues, such as those in NADPH oxidase components, might be involved in reduced respiratory burst activity. As α,β-unsaturated aldehydes such as acrolein have been implicated in thiol modifications by CS, we exposed neutrophils to acrolein prior to stimulation, and observed inhibition of NADPH oxidase activation in relation to GSH depletion. Addnl., translocation of the cytosolic components of NADPH oxidase to the membrane, a necessary requirement for enzyme activation, was inhibited. Protein adducts of acrolein (or related aldehydes) could be detected in several neutrophil proteins, including NADPH oxidase components, following neutrophil exposure to either CS or acrolein. Alterations in neutrophil function by exposure to (environmental) tobacco smoke may affect inflammatory/infectious conditions and thereby contribute to tobacco-related disease.

Toxicology published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C8H7ClO3, Application In Synthesis of 33697-81-3.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Ahlers, Patrick published the artcileDynamic Light Scattering Investigation of the Kinetics and Fidelity of Supramolecular Copolymerizations in Water, Category: chlorides-buliding-blocks, the publication is Macromolecules (Washington, DC, United States) (2017), 50(19), 7712-7720, database is CAplus.

The self-assembly of supramol. copolymers facilitates the preparation of multifunctional materials, with tunable mech., electronic, or bioactive properties. Compared to covalent copolymerization protocols, controlling the mol. weight, stability, and monomer sequence of a multicomponent supramol. copolymer remains limited. Here, we report a light scattering investigation of the charge-regulated supramol. copolymerization in neutral buffer of physiol. ionic strength, supported with electron microscopy and CD spectroscopy experiments Dendritic anionic and cationic peptide comonomers self-assemble into AB-type heterocopolymers with a nanorod-like morphol., a thickness of 11 nm, and a mean length of up to 70 nm. The fidelity in the copolymerization is remarkably high, and excess of either monomer of up to 50 mol % in the feed ratio does not lead to chain stoppering. The narrow length distribution of the copolymers (D < 1.3) and high colloidal stability in physiol. buffer support their applications as biomedical carrier materials.

Macromolecules (Washington, DC, United States) published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C19H14Cl2, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Li, Zi-Hao published the artcileN-Hydroxyphthalimide/benzoquinone-catalyzed chlorination of hydrocarbon C-H bond using N-chlorosuccinimide, Synthetic Route of 939-99-1, the publication is Organic & Biomolecular Chemistry (2019), 17(13), 3403-3408, database is CAplus and MEDLINE.

The direct chlorination of C-H bonds has received considerable attention in recent years. In this work, a metal-free protocol for hydrocarbon C-H bond chlorination with com. available N-chlorosuccinimide (NCS) catalyzed by N-hydroxyphthalimide (NHPI) with 2,3-dicyano-5,6-dichlorobenzoquinone (DDQ) functioning as an external radical initiator is presented. Aliphatic and benzylic substituents and also heteroaromatic ones were found to be well tolerated. Both the experiments and theor. anal. indicate that the reaction goes through a process wherein NHPI functions as a catalyst rather than as an initiator. On the other hand, the hydrogen abstraction of the C-H bond conducted by a PINO species rather than the highly reactive N-centered radicals rationalizes the high chemoselectivity of the monochlorination obtained by this protocol as the latter is reactive towards the C(sp³)-H bonds of the monochlorides. The present results could hold promise for further development of a nitroxy-radical system for the highly selective functionalization of the aliphatic and benzylic hydrocarbon C-H.

Organic & Biomolecular Chemistry published new progress about 939-99-1. 939-99-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzyl chloride,Benzene, name is 1-(Chloromethyl)-4-(trifluoromethyl)benzene, and the molecular formula is C8H6ClF3, Synthetic Route of 939-99-1.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Wieting, Joshua M. published the artcilePreparation and catalytic activity of BINOL-derived silanediols, COA of Formula: C10H15ClO3S, the publication is European Journal of Organic Chemistry (2015), 2015(3), 525-533, database is CAplus.

Enantiopure silanediols I (2a–d; 2a, R¹ = R² = H; 2b, R¹ = R² = Ph; 2c, R¹ = H, R² = Ph; 2d, R¹ = Ph, R² = H) derived from BINOL are an innovative family of stereoselective hydrogen-bond donor (HBD) organocatalysts. Silanediols incorporated into a BINOL framework are attractive catalysts, as they are readily accessible and highly customizable. Structural modifications of the BINOL backbone affect the reactivity and selectivity of the silanediol catalysts in the additions of silyl ketene acetals to N-acyl isoquinolinium ions. The best results were obtained when the silanediol scaffold was substituted at the 4,4′- and 6,6′-positions. This report includes details regarding the properties of selected BINOL-based silanediol catalysts, including their acidities, binding constants, and x-ray crystal structures.

European Journal of Organic Chemistry published new progress about 21286-54-4. 21286-54-4 belongs to chlorides-buliding-blocks, auxiliary class Chiral,Chloride,Sulfonyl chlorides,Aliphatic cyclic hydrocarbon,Ketone, name is ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, and the molecular formula is C22H21N3O3S, COA of Formula: C10H15ClO3S.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Neumann, Anke published the artcilePhenyl methyl ethers: novel electron donors for respiratory growth of Desulfitobacterium hafniense and Desulfitobacterium sp. strain PCE-S, Name: 3-Chloro-4-hydroxyphenylacetic acid, the publication is Archives of Microbiology (2004), 181(3), 245-249, database is CAplus and MEDLINE.

Desulfitobacterium hafniense and Desulfitobacterium sp. strain PCE-S grew under anoxic conditions with a variety of Ph Me ethers as electron donors in combination with fumarate as electron acceptor. The Ph Me ethers were O-demethylated to the corresponding phenol compounds O-demethylation was strictly dependent on the presence of fumarate; no O-demethylation occurred with CO₂ as electron acceptor. One mol Ph Me ether R-O-CH₃ was O-demethylated to R-OH per 3 mol fumarate reduced to succinate. The growth yields with vanillate or syringate plus fumarate were approx. 15 g cells (dry weight) per mol Me moiety converted. D. hafniense utilized vanillate or syringate as an electron donor for reductive dehalogenation of 3-Cl-4-hydroxyphenylacetate, whereas strain PCE-S was not able to dechlorinate tetrachloroethene with Ph Me ethers. Crude extracts of both organisms showed O-demethylase activity in the O-demethylase assay with vanillate or syringate as substrates when the organism was grown on syringate plus fumarate. Besides the homoacetogenic bacteria, only growing cells of Desulfitobacterium frappieri PCP-1 have thus far been reported to be capable of Ph Me ether O-demethylation. This present study is the first report of Desulfitobacteria utilizing Ph Me ethers as electron donors for fumarate reduction and for growth.

Archives of Microbiology published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C8H7ClO3, Name: 3-Chloro-4-hydroxyphenylacetic acid.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Steinmetz, Fabian P. published the artcileMethods for assigning confidence to toxicity data with multiple values – Identifying experimental outliers, COA of Formula: C6H3ClFNO2, the publication is Science of the Total Environment (2014), 358-365, database is CAplus and MEDLINE.

The assessment of data quality is a crucial element in many disciplines such as predictive toxicol. and risk assessment. Currently, the reliability of toxicity data is assessed on the basis of testing information alone (adherence to Good Laboratory Practice (GLP), detailed testing protocols, etc.). Common practice is to take one toxicity data point per compound – usually the one with the apparently highest reliability. All other toxicity data points (for the same experiment and compound) from other sources are neglected. To show the benefits of incorporating the “less reliable” data, a simple, independent, statistical approach to assess data quality and reliability on a math. basis was developed. A large data set of toxicity values to Aliivibrio fischeri was assessed. The data set contained 1813 data points for 1227 different compounds, including 203 identified as non-polar narcotic. Log K_OW values were calculated and non-polar narcosis quant. structure-activity relationship (QSAR) models were built. A statistical approach to data quality assessment, which is based on data outlier omission and confidence scoring, improved the linear QSARs. The results indicate that a beneficial method for using large data sets containing multiple data values per compound and highly variable study data has been developed. Furthermore this statistical approach can help to develop novel QSARs and support risk assessment by obtaining more reliable values for biol. endpoints.

Science of the Total Environment published new progress about 350-30-1. 350-30-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Nitro Compound,Benzene, name is 3-Chloro-4-fluoronitrobenzene, and the molecular formula is C28H41N7O4, COA of Formula: C6H3ClFNO2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Zhang, Liyun published the artcile“Orange alert”: A fluorescent detector for bisphenol A in water environments, Computed Properties of 42074-68-0, the publication is Analytica Chimica Acta (2014), 51-56, database is CAplus and MEDLINE.

Due to the prevalent use of polycarbonate plastics and epoxy resins in packaging materials and paints for ships, there has been a widespread global contamination of environmental water sources with bisphenol A (BPA). BPA, an endocrine disruptor, has been found to cause tremendous health problems. Therefore, there is an urgent need for detecting BPA in a convenient and sensitive manner to ensure water safety. Herein, we develop a fluorescent turn-on BPA probe, named Bisphenol Orange (BPO), which could conveniently detect BPA in a wide variety of real water samples including sea water, drain water and drinking water. BPO shows superior selectivity toward BPA and up to 70-fold increase in fluorescence emission at 580 nm when mixed with BPA in water. Mechanistic studies suggest a plausible water-dependent formation of hydrophobic BPA clusters which favorably trap and restrict the rotation of BPO and recover its inherent fluorescence.

Analytica Chimica Acta published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C7H4BrClO2, Computed Properties of 42074-68-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Pedersen, Stephan K. published the artcileSymmetric, Unsymmetrical, and Asymmetric [7]-, [10]-, and [13]Helicenes, Category: chlorides-buliding-blocks, the publication is Angewandte Chemie, International Edition (2019), 58(51), 18419-18423, database is CAplus and MEDLINE.

Fully aromatic helicenes with more than one pitch-length are illustrious synthetic targets with potential applications in advanced optical devices and nano-electronics. The task of extending the length of fully conjugated helicenes past one pitch length is challenging. Now, the synthesis of a series of azaoxa[7]-, [10]-, and [13]helicenes is described. The synthesis is based on iterative oxidative furan formation between 3,6-dihydroxycarbazoles and/or 2-naphthols [e.g., oxidative coupling of carbazole I to II followed by selective protection of least sterically hindered alcs. and furan formation mediated by oxidant and Lewis acid afforded diazaoxa[7]helicene III]. The flexibility of the presented method allows the convenient and scalable synthesis of sym., unsym., and asym. homo-chiral structures. The [13]helicenes can be synthetically functionalized both at the termini and the periphery. The full range of helicenes were characterized using NMR and optical spectroscopy (UV/Vis, fluorescence, and CD) along with single-crystal X-ray crystallog. The enantiomers of the [13]helicenes are the longest optically pure helicenes isolated to date.

Angewandte Chemie, International Edition published new progress about 21286-54-4. 21286-54-4 belongs to chlorides-buliding-blocks, auxiliary class Chiral,Chloride,Sulfonyl chlorides,Aliphatic cyclic hydrocarbon,Ketone, name is ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, and the molecular formula is C10H15ClO3S, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Alazzouzi, ElMostafa published the artcileA solid-phase method for the synthesis of small to medium-sized cyclic oligonucleotides, Safety of 3-Chloro-4-hydroxyphenylacetic acid, the publication is Nucleosides & Nucleotides (1997), 16(7-9), 1513-1514, database is CAplus.

Cyclic oligodeoxyribonucleotides (2- to 30-mer) are synthesized by a solid-phase method, for both chain elongation and cyclization, employing a new linker and standard phosphoramidite chem. Fairly pure crude products (>90% by HPLC) are obtained.

Nucleosides & Nucleotides published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C8H7ClO3, Safety of 3-Chloro-4-hydroxyphenylacetic acid.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics