Month: October 2022

Banovetz, Haley K.; Vickerman, Kevin L.; David, Colton M.; Alkan, Melisa; Stanley, Levi M. published the artcile< Palladium-Catalyzed Intermolecular Alkene Carboacylation via Ester C-O Bond Activation>, SDS of cas: 17082-09-6, the main research area is functionalized ketone diastereoselective preparation; ester preparation bicyclic alkene tetraarylborate carboacylation palladium catalyst.

Palladium-catalyzed intermol. carboacylation of alkenes with ester electrophiles and tetraarylborate nucleophiles was reported. Bicyclic alkenes reacted with a variety of pentafluorophenyl benzoate and alkanoate esters and sodium tetraarylborates to form functionalized ketone products, e.g., I in ≤99% yields. These reactions occurred in the absence of a directing group and demonstrate esters were competent acyl electrophiles for intermol. alkene carboacylation reactions.

Organic Letters published new progress about Acid chlorides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, SDS of cas: 17082-09-6.

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

McKew, John C.; Foley, Megan A.; Thakker, Paresh; Behnke, Mark L.; Lovering, Frank E.; Sum, Fuk-Wah; Tam, Steve; Wu, Kun; Shen, Marina W. H.; Zhang, Wen; Gonzalez, Mario; Liu, Shanghao; Mahadevan, Anu; Sard, Howard; Khor, Soo Peang; Clark, James D. published the artcile< Inhibition of Cytosolic Phospholipase A2α: Hit to Lead Optimization>, Category: chlorides-buliding-blocks, the main research area is indole derivative preparation structure phospholipase A2 inhibitor.

Compound (I) was previously reported to be a potent inhibitor of cPLA2α in both artificial monomeric substrate and cell-based assays. However, I was inactive in whole blood assays previously used to characterize cyclooxygenase and lipoxygenase inhibitors. The IC50 of I increased dramatically with cell number or lipid/detergent concentration In an attempt to insert an electrophilic ketone between the indole and benzoic acid moieties, the authors discovered that increasing the distance between the two moieties gave a compound with activity in the GLU (7-hydroxycoumarinyl-γ-linolenate) micelle assay, which contains lipid and detergent. Extensive structure-activity relationship work around this lead identified a potent pharmacophore for cPLA2α inhibition. The IC50s between the GLU micelle and rat whole blood assays correlated highly. No correlation was found for other parameters, including lipophilicity or acidity of the required acid functionality. Three compounds emerged as potent, selective inhibitors of cPLA2α and represent well-validated starting points for further optimization.

Journal of Medicinal Chemistry published new progress about Pharmacophores. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Category: chlorides-buliding-blocks.

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

Wang, Xi; Wu, Chun-Yan; Li, Yue-Sheng; Dong, Zhi-Bing published the artcile< Three-Component Synthesis of 2-Substituted Thiobenzoazoles Using Tetramethyl Thiuram Monosulfide (TMTM) as Thiocarbonyl Surrogate>, Name: 1-Chloro-2-(chloromethyl)benzene, the main research area is thiobenzoazole preparation tetramethyl thiuram monosulfide thiocarbonyl.

A metal-free synthesis of 2-benzyl/allyl-substituted thiobenzoazoles was developed starting from tetra-Me thiuram monosulfide (TMTM) which served as thiocarbonyl surrogate. By using 2-aminophenols (or 2-aminothiophenols, or 1,2-phenylenediamines) and TMTM as starting materials, 2-mercaptobenzoazoles could be synthesized efficiently. The subsequent C-S bond formation with benzyl/allyl halides gave the final products (2-benzyl/allyl-substituted thiobenzoazoles) with good to excellent yields. The metal-free conditions, inexpensive and easily available starting materials, and broad substrate scope are the advantageous features of this protocol.

European Journal of Organic Chemistry published new progress about Allylic halides Role: RCT (Reactant), RACT (Reactant or Reagent). 611-19-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H6Cl2, Name: 1-Chloro-2-(chloromethyl)benzene.

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

Guo, Lei; Plietker, Bernd published the artcile< β-Ketoesters as Mono- or Bisnucleophiles: A Concise Enantioselective Total Synthesis of (-)-Englerin A and B>, SDS of cas: 17082-09-6, the main research area is englerin A B enantioselective synthesis; antitumor agents; asymmetric catalysis; natural products; organocatalysis; total synthesis.

A short enantioselective total synthesis of englerin A, a guaiane sesquiterpene with significant in vitro antitumor activity, is reported. Key features of this total synthesis are an organocatalytic asym. decarboxylative aldol reaction, a neighboring-group-participating [4+3] cycloaddition, a novel one-pot Heck coupling/regioselective 1,4-hydrosilylation/Tamao-Fleming oxidation cascade, and a kinetic CBS reduction, generating the optically pure natural product in 6.7% overall yield over twelve steps starting from methylglyoxal. Selective saponification of the more reactive glycolic ester moiety of englerin A also gave (-)-englerin B.

Angewandte Chemie, International Edition published new progress about [4+3] Cycloaddition reaction. 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, SDS of cas: 17082-09-6.

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

McClure, Kelly J.; Maher, Michael; Wu, Nancy; Chaplan, Sandra R.; Eckert, William A. III; Lee, Dong H.; Wickenden, Alan D.; Hermann, Michelle; Allison, Brett; Hawryluk, Natalie; Breitenbucher, J. Guy; Grice, Cheryl A. published the artcile< Discovery of a novel series of selective HCN1 blockers>, COA of Formula: C8H4ClF3O2, the main research area is HCN1 blocker preparation SAR; heterocyclylindanemethyl heterocyclylethyl benzamide preparation; structure heterocyclylindanemethyl heterocyclylethyl benzamide inhibition HCN1 cation channel.

The discovery of a series of novel, potent, and selective blockers of the hyperpolarization-activated cation-nonselective cyclic nucleotide-modulated ion channel HCN1 is disclosed. Here we report an SAR study around a series of selective blockers of the HCN1 channel. Utilization of a high-throughput VIPR assay led to the identification of a novel series of 2,2-disubstituted indane derivatives, which had moderate selectivity and potency at HCN1. Optimization of this hit led to the identification of the potent, 1,1-disubstituted cyclohexane HCN1 blocker, 2-ethoxy-N-((1-(4-isopropylpiperazin-1-yl)cyclohexyl)methyl)benzamide. The work leading to the discovery of this compound is described herein.

Bioorganic & Medicinal Chemistry Letters published new progress about Analgesics. 162046-61-9 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H4ClF3O2, COA of Formula: C8H4ClF3O2.

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

Zhang, Zhi-Jun; Zhou, Xu; Li, Dashan; Chen, Yang; Xiao, Wen-Wen; Li, Rong-Tao; Shao, Li-Dong published the artcile< Aerobic Copper-Catalyzed Intramolecular Cascade Oxidative Isomerization/[4+4] Cyclization of 2,2'-Disubstituted Stilbenes>, Related Products of 53581-86-5, the main research area is dibenzofurofuran benzofuroindole dibenzothienofuran diastereoselective preparation; copper catalyst stereoselective oxidative isomerization cyclization hydroxystilbene; mechanism tandem stereoselective oxidative isomerization cyclization hydroxystilbene.

An aerobic copper-catalyzed cascade oxidative isomerization/[4+4] cyclization of 2,2′-disubstituted stilbenes such as I is described. Under the mild CuCl/N,N’-di-tert-butyl-1,2-ethanediamine (DBED)/air catalytic system, various 5,10-heteroatom-containing tetrahydroindeno[2,1-a]indenes such as dibenzofurofuran II were efficiently prepared through the difunctionalizations of alkenes in a highly atom economic manner. Mechanistic investigations suggested the bicyclic product was likely formed through a sequence of rapid single-electron oxidation/[4+4] cyclization from 2,2′-disubstituted stilbene. The antarafacial manner of the thermally allowed [4+4] cyclization was further proven by series of control experiments and d. functional theory calculations Our findings provide an important addition to the aerobic copper-catalyzed oxidative cyclization.

Journal of Organic Chemistry published new progress about Benzofurans Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation) (benzofuro-). 53581-86-5 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO2, Related Products of 53581-86-5.

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

Jatav, Varsha; Kashaw, Sushil; Mishra, Pradeep published the artcile< Synthesis, antibacterial and antifungal activity of some novel 3-[5-(4-substituted phenyl) 1,3,4-thiadiazole-2-yl]-2-styryl quinazoline-4(3H)-ones>, Application of C8H6ClN3S, the main research area is aryl thiadiazolyl styryl quinazolinone preparation antibacterial antifungal activity.

A series of novel 3-[5-substituted phenyl-1,3,4-thiadiazole-2-yl]-2-styryl quinazoline-4(3H)-ones, e.g., I, were synthesized and evaluated for antibacterial activity against pathogenic strains of Staphylococcus aureus (MTCC number 96), Bacillus subtilis (MTCC number 619), Pseudomonas aeruginosa (MTCC number 424) and Escherichia coli (MTCC number 40) and antifungal activity against Aspergillus niger, Candida albicans and Fusarium oxysporum. The cup-plate method was employed to determine the min. inhibitory concentration (MIC) value of the compounds Some of the compounds exhibited activity comparable to Norfloxacin. The present report reveals that synthesized 2-styryl-quinazoline-4(3H)-one exhibited better antibacterial than antifungal activity.

Medicinal Chemistry Research published new progress about Antibacterial agents. 70057-67-9 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H6ClN3S, Application of C8H6ClN3S.

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

Mao, Qianhui; Ji, Feng; Wang, Wei; Wang, Qiquan; Hu, Zhenhu; Yuan, Shoujun published the artcile< Chlorination of parabens: reaction kinetics and transformation product identification>, SDS of cas: 3964-57-6, the main research area is paraben methylparaben chlorination kinetics; Chlorination; Kinetics; Mechanism; Parabens; Pathway; Transformation products.

The reactivity and fate of parabens during chlorination were investigated in this work. Chlorination kinetics of methylparaben (MeP), ethylparaben (EtP), propylparaben (PrP), and butylparaben (BuP) were studied in the pH range of 4.0 to 11.0 at 25 ± 1 °C. Apparent rate constants (kapp) of 9.65 × 10-3 M-0.614·s-1, 1.77 × 10-2 M-1.019·s-1, 2.98 × 10-2 M-0.851·s-1, and 1.76 × 10-2 M-0.860·s-1 for MeP, EtP, PrP, and BuP, resp., were obtained at pH 7.0. The rate constants depended on the solution pH, temperature, and NH4+ concentration The maximum kapp was obtained at pH 8.0, and the min. value was obtained at pH 11.0. The reaction rate constants increased with increasing temperature When NH4+ was added to the solution, the reaction of parabens was inhibited due to the rapid formation of chloramines. Two main transformation products, 3-chloro-parabens and 3,5-dichloro-parabens, were identified by GC-MS and LCMS-IT-TOF, and a reaction pathway was proposed. Dichlorinated parabens accumulated in solution, which is a threat to human health and the aqueous environment.

Environmental Science and Pollution Research published new progress about Chemical oxygen demand. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, SDS of cas: 3964-57-6.

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

Solas, Marta; Suarez-Pantiga, Samuel; Sanz, Roberto published the artcile< Asymmetric Gold(I)-Catalyzed Tandem Hydroarylation-Nazarov Cyclization: Enantioselective Access to Cyclopentenones>, Quality Control of 17082-09-6, the main research area is cyclopentachromenone preparation enantioselective; alkenynone asym gold catalyst tandem antiMichael hydroarylation nazarov cyclization; Asymmetric Catalysis; Cyclopentenones; Gold; Hydroarylation; Nazarov Cyclization.

The asym. synthesis of cyclopentachromenones from gold-catalyzed reaction of readily available skipped alkenynones is described. This cascade reaction involves an initial anti-Michael hydroarylation of the ynone moiety to form a gold-functionalized dialkenylketone intermediate, followed by a Nazarov cyclization that proceeds in an unprecedented enantioselective manner. Excellent enantiomeric ratios and chem. yields are obtained under mild reaction conditions.

Angewandte Chemie, International Edition published new progress about Alkenynes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Quality Control of 17082-09-6.

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