Tag: M.W=100-150

Authors Jakovljevic, K; Joksovic, MD; Botta, B; Jovanovic, LS; Avdovic, E; Markovic, Z; Mihailovic, V; Andric, M; Trifunovic, S; Markovic, V in ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER published article about OXIDATIVE STRESS; HYDROGEN-PEROXIDE; RADICAL-CATION; VITAMIN-E; MECHANISMS; ATOM; DERIVATIVES; INHIBITION; MANAGEMENT; REDUCTION in [Jakovljevic, Katarina; Joksovic, Milan D.; Avdovic, Edina; Mihailovic, Vladimir; Andric, Marijana; Markovic, Violeta] Univ Kragujevac, Fac Sci, Dept Chem, R Domanovica 12, Kragujevac 34000, Serbia; [Botta, Bruno] Sapienza Univ Roma, Dipartimento Chim & Tecnol Farmaco, Ple Aldo Moro 5, I-00185 Rome, Italy; [Jovanovic, Ljiljana S.] Univ Novi Sad, Fac Sci, Trg D Obradovica 3, Novi Sad 21000, Serbia; [Markovic, Zoran] State Univ Novi Pazar, Dept ChemicalTechnol Sci, Novi Pazar 36300, Serbia; [Trifunovic, Snezana] Univ Belgrade, Fac Chem, Studentski Trg 16, Belgrade 11000, Serbia in 2019, Cited 55. Application In Synthesis of 3-Methylbenzoic acid. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7

A series of 15 novel 1,3,4-thiadiazole amide derivatives containing a protocatechuic acid moiety were synthesized and structurally characterized. In addition, the corresponding imino (4) and amino (5) analogues of a phenyl-substituted 1,3,4-thiadiazole amide derivative 3a were prepared to compare the effects of the structural changes on the radical-scavenging activity. The obtained compounds were examined for their antioxidative potential by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays. In addition, selected compounds were studied by density functional theory (DFT) and cyclic voltammetry experiments. The tested compounds showed high potential to scavenging DPPH radical and ABTS radical cation compared with the referent antioxidants ascorbic acid and nordihydroguaiaretic acid (NDGA). On the basis of the calculated thermodynamic parameters, it can be concluded that the sequential proton loss electron transfer (SPLET) mechanism represents the most probable reaction path in a polar solvent for DPPH radical-scavenging activity. On the other hand, the single electron transfer followed by proton transfer (SET-PT) can be a likely mechanistic pathway in the case of an ABTS radical cation. (C) 2019 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

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I found the field of Chemistry very interesting. Saw the article Cu-Catalysed carboxylation of aryl boronic acids with CO2 published in 2019. SDS of cas: 99-04-7, Reprint Addresses Mo, FY (corresponding author), Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China.; Mo, FY (corresponding author), Jiangsu Donghai Silicon Ind S&T Innovat Ctr, Donghai Cty 222300, Jiangsu, Peoples R China.. The CAS is 99-04-7. Through research, I have a further understanding and discovery of 3-Methylbenzoic acid

A copper/N-heterocyclic carbene (NHC) catalysed carboxylation of aryl boronic acids under one atmospheric pressure of CO2 has been developed. A wide range of aryl boronic acids was transformed into benzoic acid derivatives in moderate to high yields. The carboxylation method shows excellent functional group compatibility, and sensitive functional groups such as carbonyls, esters, and nitriles were tolerated. Mechanistic studies revealed the vital role of the base in promoting the transmetalation step for this copper-catalysed carboxylation.

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In 2019 GREEN CHEM published article about QUANTUM DOTS; PHOTOREDOX CATALYSIS; GRAPHENE OXIDE; NANODOTS in [Sarma, Daisy; Majumdar, Biju; Sarma, Tridib K.] Indian Inst Technol Indore, Sch Basic Sci, Discipline Chem, Khandwa Rd, Indore 453552, India in 2019, Cited 39. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0. COA of Formula: C8H10O2

The development of carbonaceous materials as metal-free catalysts integrating different types of catalysis in a single system represents a significant advance in cascade/tandem organic synthesis. Zero-dimensional carbon dots with tuneable optical properties and easily modifiable surface functionalities can be harnessed as a carbocatalyst for merging photooxidation and acid-catalyzed reactions in one pot. Herein, we explore carbon dots decorated with hydrogen sulfate groups as a photocatalyst for the dehydrogenative cross-coupling of xanthenes with ketones, arenes and 1,3-dicarbonyl compounds that showed high efficiency and selectivity under visible-light irradiation. The sulphated carbon dots demonstrate dual catalytic properties, wherein they induced the rapid photooxidation of xanthenes in the presence of molecular oxygen to form a hydroperoxy intermediate followed by coupling of nucleophiles catalysed by the acidic surface functional groups. The methodology represents an operationally simple pathway for the generation of C-C coupling products in a short reaction time with wide substrate scopes under mild conditions. The catalyst is easily separable and can be reused over multiple cycles with good efficiency.

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An article Synthesis and Antiproliferative Activity of Natural and Non-Natural Polymethoxychalcones and Polymethoxyflavones WOS:000461554200004 published article about MANNICH BASE DERIVATIVES; ANTICANCER; CHALCONES in [Vongdeth, Kingsadingthongkham; Han, Peipei; Li, Wei; Wang, Qiu-An] Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China; [Vongdeth, Kingsadingthongkham] Natl Univ Laos, Fac Nat Sci, Dept Chem, Dong Dok Campus,North 13rd,POB 7322, Vientiane Capital, Laos in 2019, Cited 23. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0. Application In Synthesis of 1,3-Dimethoxybenzene

Two series of polymethoxychalcones and polymethoxyflavones, including the natural products 2-hydroxy-3,4,5,4,6-pentamethoxychalcone (8c), 5,6,7,8,3,4,5-heptamethoxyflavone (6), 5,7,3,4,5-pentamethoxyflavone (9c), 3-hydroxy-5,6,7,8,3,4,5-heptamethoxyflavone (7), and 3-hydroxy-5,7,3,4,5-pentamethoxyflavone (10), were synthesized. The antiproliferative activity in vitro was evaluated against a panel of three human cancer cell lines (HeLa, HCC1954, and SK-OV-3) by the cell counting kit-8 (CCK-8) assay. The results showed that most of the synthetic compounds exhibited moderate to potent antiproliferative activities. Some compounds displayed equal or higher potential than the positive control drug cisplatin. In particular, compounds 4c, 4e, 8a, and 9a possess IC50 values equal to or below 10 M and are worthy of further investigation.

Application In Synthesis of 1,3-Dimethoxybenzene. Welcome to talk about 151-10-0, If you have any questions, you can contact Vongdeth, K; Han, PP; Li, W; Wang, QA or send Email.

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Wang, ZH; Wang, XN; Wen, D; Long, XL in [Wang, Zhi-hao; Wang, Xin-ning; Wen, Di; Long, Xiang-li] East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai, Peoples R China published Isophthalic acid production catalyzed by Co(II) together with phosphotungstic acid loaded on carbon modified with tartaric acid in 2020.0, Cited 34.0. Product Details of 99-04-7. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7.

Background Isophthalic acid (IPA) is commercially produced using the Co-Mn-Br catalyst system, which suffers from the shortcomings of the discharge of CH3Br and corrosion of equipment. It is necessary to develop a technology to avoid the pollution caused by bromide. The production of IPA from the oxidation ofm-xylene (MX) by air is realized under catalysis with H3PW12O40(HPW) loaded on carbon and cobalt. Results Tartaric acid has been used to improve the catalytic activity of the HPW@C catalyst. Experiments indicate that the best modification condition is calcining the carbon at 450 degrees C for 4 h after being soaked in a 2.0 mol L(-1)tartaric acid solution for 10 h. Surface characterization reveals that the tartaric acid modification leads to an increase in the acid groups and a reduction in the basic groups on the carbon surface. Conclusions The MX conversion obtained using the HPW@C catalyst prepared from modified carbon is 6.77% over that obtained using the HPW@C catalyst prepared from the original carbon. The IPA generated using the former is 71.1% over that generated using the latter. The catalytic activity of the HPW@C catalyst relies on its surface chemical characteristics and physical properties. The surface chemistry plays a more important role than the physical properties. (c) 2020 Society of Chemical Industry

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An article Preparation of Functionalized Aryl, Heteroaryl, and Benzylic Potassium Organometallics Using Potassium Diisopropylamide in Continuous Flow WOS:000529645900001 published article about DIRECTED ORTHO-METALATION; SODIUM DIISOPROPYLAMIDE; ORGANOLITHIUM COMPOUNDS; ALKALI-METALS; STRONG BASES; LITHIUM; REARRANGEMENT; DERIVATIVES; ALKOXIDES; REAGENTS in [Harenberg, Johannes H.; Weidmann, Niels; Knochel, Paul] Ludwig Maximilians Univ Munchen, Dept Chem, Butenandtstr 5-13,Haus F, D-81377 Munich, Germany in 2020, Cited 60. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0. Name: 1,3-Dimethoxybenzene

We report the preparation of lithium-salt-free KDA (potassium diisopropylamide; 0.6 m in hexane) complexed with TMEDA (N,N,N ‘,N ‘-tetramethylethylenediamine) and its use for the flow-metalation of (hetero)arenes between -78 degrees C and 25 degrees C with reaction times between 0.2 s and 24 s and a combined flow rate of 10 mL min(-1) using a commercial flow setup. The resulting potassium organometallics react instantaneously with various electrophiles, such as ketones, aldehydes, alkyl and allylic halides, disulfides, Weinreb amides, and Me3SiCl, affording functionalized (hetero)arenes in high yields. This flow procedure is successfully extended to the lateral metalation of methyl-substituted arenes and heteroaromatics, resulting in the formation of various benzylic potassium organometallics. A metalation scale-up was possible without further optimization.

Welcome to talk about 151-10-0, If you have any questions, you can contact Harenberg, JH; Weidmann, N; Knochel, P or send Email.. Name: 1,3-Dimethoxybenzene

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Recommanded Product: 99-04-7. In 2021.0 RSC ADV published article about ESTERS; ACID; MECHANOCHEMISTRY; ULTRASOUND; CHALLENGES; MICROWAVE; MITSUNOBU; REAGENT; OIL in [Zheng, Lei; Sun, Chen; Xu, Wenhao; Su, Weike] Zhejiang Univ Technol, Key Lab Green Pharmaceut Technol & Related Equipm, Minist Educ, Coll Pharmaceut Sci, Hangzhou 310014, Peoples R China; [Xu, Wenhao; Su, Weike; Yu, Jingbo] Zhejiang Univ Technol, Natl Engn Res Ctr Proc Dev Act Pharmaceut Ingredi, Collaborat Innovat Ctr Yangtze River Delta Reg Gr, Hangzhou 310014, Peoples R China; [Dushkin, Alexandr V.; Polyakov, Nikolay] Inst Solid State Chem & Mechanochem, Novosibirsk, Russia in 2021.0, Cited 55.0. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7.

Herein, we describe two novel strategies for the synthesis of esters, as achieved under high-speed ball-milling (HSBM) conditions at room temperature. In the presence of I-2 and KH2PO2, the reactions afford the desired esterification derivatives in 45% to 91% yields within 20 min of grinding. Meanwhile, using KI and P(OEt)(3), esterification products can be obtained in 24% to 85% yields after 60 min of grinding. In addition, the I-2/KH2PO2 protocol was successfully extended to the late-stage diversification of natural products showing the robustness of this useful approach. Further application of this method in the synthesis of inositol nicotinate was also discussed.

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An article Aromatic Halogenation Using N-Halosuccinimide and PhSSiMe3 or PhSSPh WOS:000471212000079 published article about LEWIS-BASE CATALYSIS; METHYLENE ACETALS; COMBINATION; EFFICIENT; 1,3-DIBROMO-5,5-DIMETHYLHYDANTOIN; BROMOSULFENYLATION; TRANSFORMATION; BROMINATION; PHENOLS; SOLVENT in [Hirose, Yuuka; Yamazaki, Mirai; Nogata, Misa; Nakamura, Akira; Maegawa, Tomohiro] Kindai Univ, Sch Pharmaceut Sci, Osaka 5778502, Japan in 2019, Cited 43. Product Details of 151-10-0. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0

We developed a mild aromatic halogenation reaction using a combination of N-halosuccinimide and PhSSiMe3 or PhSSPh. Less reactive aromatic compounds, such as methyl 4-methoxybenzoate, were brominated with PhSSiMe3 or PhSSPh and N-bromosuccinimide in high yields. No reaction was observed in the absence of PhSSiMe3 or PhSSPh. This method is also applicable to chlorination reactions using N-chlorosuccinimide and PhSSPh.

Product Details of 151-10-0. Welcome to talk about 151-10-0, If you have any questions, you can contact Hirose, Y; Yamazaki, M; Nogata, M; Nakamura, A; Maegawa, T or send Email.

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An article A Broad Substrate Scope of Aza-Friedel-Crafts Alkylation for the Synthesis of Quaternary alpha-Amino Esters WOS:000562077400022 published article about ACIDS; CONFORMATIONS; ALKYNYLATION; ACTIVATION; DISCOVERY; CATALYSIS; PEPTIDES; STRATEGY; BINDING; DESIGN in [Zhao, Guangkuan; Samanta, Shyam S.; Michieletto, Jessica; Roche, Stephane P.] Florida Atlantic Univ, Dept Chem & Biochem, Boca Raton, FL 33431 USA; [Roche, Stephane P.] Florida Atlantic Univ, Ctr Mol Biol & Biotechnol, Jupiter, FL 33458 USA in 2020, Cited 65. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0. Quality Control of 1,3-Dimethoxybenzene

A versatile synthetic protocol of aza-Friedel-Crafts alkylation has been developed for the synthesis of quaternary alpha-amino esters. This operationally simple alkylation proceeds under ambient conditions with high efficiency, regioselectivity, and an exceptionally broad scope of arene nucleophiles. A key feature of this alkylation is the role associated with the silver(I) salt counteranions liberated during the reaction. Taking advantage of a phase-transfer counteranion/Bronsted acid pair mechanism, we also report a catalytic enantioselective example of the reaction.

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Safety of 3-Methylbenzoic acid. Authors Kansiz, S; Qadir, AM; Dege, N; Faizi, SH in ELSEVIER published article about in [Kansiz, Sevgi] Samsun Univ, Dept Fundamental Sci, Fac Engn, TR-55420 Samsun, Turkey; [Qadir, Adnan M.] Salahaddin Univ, Coll Sci, Dept Chem, Erbil 44001, Iraq; [Dege, Necmi] Ondokuz Mayis Univ, Fac Arts & Sci, Dept Phys, TR-55139 Samsun, Turkey; [Faizi, Serajul Haque] BRA Bihar Univ, Langat Singh Coll, PG Dept Chem, Muzaffarpur 842001, Bihar, India in 2021, Cited 42. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7

In this study, two new copper (II) carboxylate complexes, [Cu(4-mba)(2) (tmeda)](1) and [Cu(3mba)(2)(H2O)(2)(tmeda)](2) (4-mbaH = 4-methylbenzoic acid, 3-mbaH = 3-methylbenzoic acid, tmeda = N,N,N’,N’-tetramethylethyleneamine) were synthesized. The structures and properties of the complexes were determined by X-ray single crystal diffraction method and FT-IR spectroscopy. While the crystal packing of the complex 1 is stabilized by C-H center dot center dot center dot O hydrogen bonds, in the complex 2, the molecules are connected to each other by C-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds. The optimized structures were formed using density functional theory (DFT) at the B3LYP level within the 6-311G(d,p) and LAN2DZ basis sets. Their Hirshfeld surface analyses were performed for the detailed investigation of all the contacts involved in the crystal packing. 2D fingerprint plots and Hirshfeld surface analyses signify important interactions in the crystal packing [H center dot center dot center dot H (64.2%), C center dot center dot center dot H/H center dot center dot center dot C (21.1%) and O center dot center dot center dot H/H center dot center dot center dot O (14.7%) contacts for [Cu(4-mba) 2(tmeda)], while [Cu(3-mba)(2)(H2O)(2)(tmeda)] showed H center dot center dot center dot H (67.3%), C center dot center dot center dot H/H center dot center dot center dot C (21.8%) and O center dot center dot center dot H/H center dot center dot center dot O (10.9%) contacts]. (C) 2021 Elsevier B.V. All rights reserved.

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