Category: chlorides-buliding-blocks

Aspin, Samuel J. published the artcile9-Silafluorenyl dichlorides as chemically ligating coupling agents and their application in peptide synthesis, Related Products of chlorides-buliding-blocks, the publication is Angewandte Chemie, International Edition (2016), 55(44), 13833-13837, database is CAplus and MEDLINE.

A fundamentally simple, mild, and practical procedure for peptide bond formation is reported that employs a stoichiometric amount of easy-to-access 9-silafluorenyl dichlorides as the coupling agent. Without initial preactivation or elaboration of the carboxylic acid or amine termini of the amino acids, the developed reagent is proposed to act through an unprecedented chem. ligation mechanism, bringing the two coupling partners together before being subsequently eliminated. The desired amides or peptide bonds are thus furnished in good yields and with low to no epimerization.

Angewandte Chemie, International Edition published new progress about 1451393-45-5. 1451393-45-5 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Bromide,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is (2-Bromo-4-chlorophenyl)boronic acid, and the molecular formula is C6H5BBrClO2, Related Products of chlorides-buliding-blocks.

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

Ishiyama, Tatsuo published the artcileA stoichiometric aromatic C-H borylation catalyzed by iridium(i)/2,2′-bipyridine complexes at room temperature, Formula: C14H18BClO4, the publication is Angewandte Chemie, International Edition (2002), 41(16), 3056-3058, database is CAplus and MEDLINE.

Room-temperature C-H borylation using a stoichiometric amount of arenes and bis(pinacolato)diboron (pin₂B₂) is efficiently catalyzed by iridium(I) complexes generated from [{Ir(OMe)(cod)}₂] (cod = 1,5-cyclooctadiene) and 4,4′-di-tert-butyl-2,2′-bipyridine (dtbpy) in hexane, and provides the corresponding arylboronates in excellent yields. Thus, [{Ir(OMe)(cod)}₂]/dtbpy catalyzed C-H borylation of 1,2-dichlorobenzene with pin₂B₂ in hexane at 25° for 8h gave 82% 3,4-Cl₂C₆H₃Bpin.

Angewandte Chemie, International Edition published new progress about 408492-29-5. 408492-29-5 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronate Esters,Boronic acid and ester,, name is Methyl 3-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate, and the molecular formula is C14H18BClO4, Formula: C14H18BClO4.

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

Ishiyama, Tatsuo published the artcileIridium-catalyzed C-H borylation of arenes and heteroarenes: 1-chloro-3-iodo-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene and 2-(4,4,5,5,-tetramethyl-1,3,2-dioxaborolan-2-yl)indole, Computed Properties of 408492-29-5, the publication is Organic Syntheses (2005), 126-133, database is CAplus.

High yield C-H borylation of arenes and heteroarenes using pinacolborane or bis(pinacolato)diboron catalyzed by [Ir(OMe)(COD)]₂ and 4,4′-di-tert-butyl-2,2′-bipyridine occurs at room temperature

Organic Syntheses published new progress about 408492-29-5. 408492-29-5 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronate Esters,Boronic acid and ester,, name is Methyl 3-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate, and the molecular formula is C14H18BClO4, Computed Properties of 408492-29-5.

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

Shigano, Miyuki published the artcileThe effect of aging on the repeated-dose liver micronucleus assay, SDS of cas: 637-07-0, the publication is Genes and Environment (2021), 43(1), 37, database is CAplus and MEDLINE.

Abstract: Background: The liver micronucleus (MN) assay is an effective and important in vivo test for detecting genotoxic compounds In particular, the repeated-dose liver MN (RDLMN) assay which greatly facilitates incorporation of the liver MN assay into the general toxicity study has been developed. Usefulness of the RDLMN assay was appraised highly in the 7th International Workshops on Genotoxicity Testing (2017 in Tokyo) in that sufficient numbers and types of chems. were studied and easy integration into the general toxicity study is preferred from the 3Rs point of view. However, it was pointed out that it is necessary to evaluate the effect of age at the start of 4-wk repeated administration, since there are limited data, where only those of rats of 6 wk of age at the start of administration are available. In this study, we conducted the 4-wk RDLMN assay using rats of 6 and 8 wk of age (at the start of administration) to investigate the effect of age on the liver MN inducibility. Clofibrate, a weak inducer of liver MN, was used in this study to detect the slight difference in the liver MN induction. Results: The liver MN induced by clofibrate was detected in both rats of 6 and 8 wk of age at the start of administration. However, the liver MN induction was lower in rats of 8 wk of age compared to rats of 6 wk of age at the start of administration. Conclusion: These results suggest that the liver MN inducibility decreases with age. Therefore, we recommend the use of rats of 6 wk of age at start of administration to reliably detect the liver MN induction in the RDLMN assay.

Genes and Environment published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C12H17NS2, SDS of cas: 637-07-0.

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

Kim, Hun Young published the artcileReversal of Enantioselectivity Approach to BINOLs via Single and Dual 2-Naphthol Activation Modes, Quality Control of 21286-54-4, the publication is Organic Letters (2017), 19(14), 3867-3870, database is CAplus and MEDLINE.

A mechanism-driven enantiodivergent approach to chiral 1,1′-bi-2-naphthols via catalytic asym. oxidative coupling of 2-naphthol derivatives is described for the first time. By utilizing 2-naphthol derivatives with low oxidation potential, the substrates were activated by either chiral mononuclear or dinuclear vanadium(V) catalyst to promote distinctively different asym. reaction pathways: single vs. dual substrate activation mechanisms.

Organic Letters 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, Quality Control of 21286-54-4.

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

Sharapova, T. published the artcileReduced hepatic global hydroxymethylation in mice treated with non-genotoxic carcinogens is transiently reversible with a methyl supplemented diet, Related Products of chlorides-buliding-blocks, the publication is Toxicology and Applied Pharmacology (2021), 115439, database is CAplus and MEDLINE.

Non-genotoxic carcinogens (NGCs) are known to cause perturbations in DNA methylation, which can be an early event leading to changes in gene expression and the onset of carcinogenicity. Phenobarbital (PB) has been shown to alter liver DNA methylation and hydroxymethylation patterns in mice in a time dependent manner. The goals of this study were to assess if clofibrate (CFB), a well-studied rodent NGC, would produce epigenetic changes in mice similar to PB, and if a Me donor supplementation (MDS) would modulate epigenetic and gene expression changes induced by phenobarbital. CByB6F1 mice were treated with 0.5% clofibrate or 0.14% phenobarbital for 7 and 28 days. A subgroup of PB treated and control mice were also fed MDS diet. Liquid Chromatog.-Ionization Mass Spectrometry (LC-MS) was used to quantify global liver 5-methylcytosine (5mC) and 5-hydroxymethylcytosine (5hmC) levels. Gene expression anal. was conducted using Affymetrix microarrays. A decrease in liver 5hmC but not 5mC levels was observed upon treatment with both CFB and PB with varying time of onset. We observed moderate increases in 5hmC levels in PB-treated mice when exposed to MDS diet and lower expression levels of several phenobarbital induced genes involved in cell proliferation, growth, and invasion, suggesting an early modulating effect of Me donor supplementation. Overall, epigenetic profiling can aid in identifying early mechanism-based biomarkers of non-genotoxic carcinogenicity and increases the quality of cancer risk assessment for candidate drugs. Global DNA methylation assessment by LC-MS is an informative first step toward understanding the risk of carcinogenicity.

Toxicology and Applied Pharmacology published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C4H7BN2O2, Related Products of chlorides-buliding-blocks.

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

Le Menn, Jean Christophe published the artcileOrganic electrosynthesis without a potentiostat. Selectivity in the stepwise reduction of trichloromethylphosphonate: a representative experiment, Application In Synthesis of 866-23-9, the publication is Journal of Chemical Education (1991), 68(6), 513-14, database is CAplus.

Two experiments in organic electrosynthesis are presented that involve the stepwise reduction of trichloromethylphosphonate in aqueous solution Safety precautions for performing the experiment are also detailed.

Journal of Chemical Education published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C5H10Cl3O3P, Application In Synthesis of 866-23-9.

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

Nagarajan, K. published the artcileAntiimplantation agents: part I – 1-arylthiosemicarbazides, Formula: C7H6ClF3N2, the publication is Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry (1984), 23B(12), 1243-57, database is CAplus.

1-Arylthiosemicarbazides, 2-arylhydrazinothiazolines and 2-arylhydrazinodihydrothiazines were prepared and examined for their antiimplantation activity in rats. Among the active compounds, MeNHCSNHNHC₆H₃(CF₃)₂-3,5 (C2696-Go) and the corresponding 4,4-di-Me, Et, n-Bu, and allyl derivatives completely inhibit implantation at doses of 10, 3, 20, 20 and 30 mg/kg resp. The 3,4-dichlorophenyl analog is effective at a dose of 30 mg/kg. Hydrazinothiazoline I (n = 1) and the corresponding dihydrothiazine I (n = 2) show a weaker activity. The biol. profile of C2696-Go was determined and it prevents implantation by its antiuretotropic activity and ability to inhibit desiduoma formation.

Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry published new progress about 1869-22-3. 1869-22-3 belongs to chlorides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Chloride,Hydrazine,Amine,Benzene, name is 1-(2-Chloro-5-(trifluoromethyl)phenyl)hydrazine, and the molecular formula is C7H6ClF3N2, Formula: C7H6ClF3N2.

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

Tanaka, Nobuyuki published the artcileRelationship between Stereochemistry and the β₃-Adrenoceptor Agonistic Activity of 4′-Hydroxynorephedrine Derivative as an Agent for Treatment of Frequent Urination and Urinary Incontinence, Computed Properties of 33697-81-3, the publication is Journal of Medicinal Chemistry (2003), 46(1), 105-112, database is CAplus and MEDLINE.

This report proposes a β₃-adrenoceptor (AR) selective agonist, 2-[2-chloro-4-(2-{[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino}ethyl)phenoxy]acetic acid (I), as a novel agent for treating urinary bladder dysfunction. This compound and its relatives have a unique feature among β₃-AR agonists: two chiral carbons are adjacently structured on the left side of the mol. To study the relationship between the stereoconfiguration of the vicinal chiral carbons in I and β-AR agonistic activity, the four stereoisomers were synthesized via oxazolidinone prepared by intracyclization involving inversion of the β-hydroxy group. The in vitro assays using rat atria for β₁-AR, rat uteri for β₂-AR, and ferret detrusor for β₃-AR showed that I possessed potent β₃-AR agonistic activity (EC₅₀ = 3.85 nM) and 3700- and 1700-fold selectivity for β₃-AR relative to β₁– and β₂-AR, resp. Comparison of the four isomers revealed that the (αS,βR)-compound (I) was not only the most potent agonist but was also the most selective for β₃-AR. In the anesthetized rat, i.v. administration of I brought about a sufficient decrement of the intrabladder pressure (ED₅₀ = 12 μg/kg), and intraduodenal administration of the Et ester of I, led to same result (ED₅₀ = 0.65 mg/kg). Moreover, no effects on the cardiovascular system were observed in either test.

Journal of Medicinal Chemistry 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 C2H3N3, Computed Properties of 33697-81-3.

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

Kiso, Yoshihisa published the artcileSilicon hydrides and nickel complexes. IV. Preparation of silicon-nickel complexes by the reaction of silicon hydrides with σ-alkyl-nickel complexes, Synthetic Route of 14799-93-0, the publication is Journal of Organometallic Chemistry (1974), 76(1), 95-103, database is CAplus.

Three silicon-nickel complexes, Ni(bipy)(SiX3)2 (I,X3 = Cl3; II, X3 = MeCl2, bipy = 2,2′-bipyridyl) and Ni(h1-C5H5 )-(PPh3)(SiCl3) (III, C5H5 = cyclopentadienyl), were prepared by treatment of silicon hydrides with appropriate alkyl-nickel complexes, Ni(bipy)R2 (IV, R = Me, V, R = Et) and Ni(h1-C5H5)(PPh3)Et (VI), resp. Both complexes I and III reacted with HCl or DCl to give the corresponding chlorosilane HSiX3 (or DSiX3) and Ni(bipy)Cl2, in good yields. II reacted with tetracyanoethylene to afford MeCl2SiSiCl2Me, but in low yield. III reacted with MeI to form MeSiCl3 (23.5% yield). The silicon-nickel complex I was inactive as catalyst for hydrosilylation of olefins, whereas the alkyl complexes V and VI were active.

Journal of Organometallic Chemistry published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Synthetic Route of 14799-93-0.

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