Tag: M.W=100-150

Recommanded Product: m-Methoxyphenol. I found the field of Chemistry very interesting. Saw the article Tuning Cu Overvoltage for a Copper-Telluride System in Electrocatalytic Water Reduction and Feasible Feedstock Conversion: A New Approach published in 2020.0, Reprint Addresses Kundu, S (corresponding author), CSIR Cent Electrochem Res Inst CECRI, Mat Electrochem Div MED, Karaikkudi 630003, Tamil Nadu, India.; Kundu, S (corresponding author), Acad Sci & Innovat Res AcSIR, Ghazizbad 201002, India.. The CAS is 150-19-6. Through research, I have a further understanding and discovery of m-Methoxyphenol.

Highly efficient and earth-abundant elements capable of water reduction by electrocatalysis and are attractive for the sustainable generation of fuels. Among the earth-abundant metals, copper is one of the cheapest but often the most neglected choice for the hydrogen evolution reaction (HER) due to its high overvoltage. Herein, for the first time we have tuned the overpotential of copper by tellurizing it by two different methodologies, viz. hydrothermal and wet chemical methods, which form copper telluride nanochains and aggregates. The application of copper telluride as an electrocatalyst for the HER gave fruitful results in terms of both activity and stability. The hydrothermally synthesized catalyst Cu2-xTe/hyd shows a low overpotential (347 mV) at 10 mA cm(-2) toward the HER. In addition, the catalyst showed a very low charge transfer resistance (R-ct) of 24.4 Omega and, as expected, Cu2-xTe/hyd exhibited a lower Tafel slope value of 188 mV/dec in comparison to Cu2-xTe/wet (280 mV/dec). A chronoamperometry study reveals the long-term stability of both catalysts even up to 12 h. The Faradaic efficiency of Cu2-xTe/hyd was calculated and found to be 95.06% by using gas chromatographic (GC) studies. Moreover, with the idea of utilizing produced hydrogen (H-2) from electrocatalysis, for the first time we have carried out feedstock conversion to platform chemicals in water under eco-friendly green conditions. We have chosen cinnamaldehyde, 2-hydroxy-1-phenylethanone, 4-(benzyloxy)-benzaldehyde, and 2-(3-methoxyphenoxy)-1-phenylethanone (beta-O-4) as model compounds for feedstock conversion by hydrogenation and/or hydrogenolysis reactions in aqueous medium using external hydrogen pressure. This protocol could also be scaled up for large-scale conversion and the catalyst is likely to find industrial application since it requires an inexpensive catalyst and an easily available, mild reducing agent. The robustness of the developed catalyst is proven by recyclability experiments and its possibility of use in real-life applications.

Recommanded Product: m-Methoxyphenol. About m-Methoxyphenol, If you have any questions, you can contact Kumaravel, S; Karthick, K; Thiruvengetam, P; Johny, JM; Sankar, SS; Kundu, S or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Hydrogen Deuterium Isotopic Labeling Study of Enantioselective Hydrogenation of (E)-2-Methyl-2-butenoic Acid over a Cinchonidine-Modified Pd/C Catalyst WOS:000485218200011 published article about ALPHA,BETA-UNSATURATED CARBOXYLIC-ACIDS; HETEROGENEOUS ASYMMETRIC HYDROGENATION; 2-METHYL-2-PENTENOIC ACID; (E)-ALPHA-PHENYLCINNAMIC ACID; LIGAND ACCELERATION; MODIFIED PALLADIUM; MODIFIED PD/TIO2; SUBSTRATE; MECHANISM; SOLVENT in [Sugimura, Takashi; Tomatsuri, Satoshi; Fujita, Morifumi; Okamoto, Yasuaki] Univ Hyogo, Grad Sch Mat Sci, Kamigori, Hyogo 6781297, Japan in 2019, Cited 37. The Name is (E)-2-Methylbut-2-enoic acid. Through research, I have a further understanding and discovery of 80-59-1. Recommanded Product: 80-59-1

In the enantioselecitve hydrogenation of (E)-2-methyl-2-butenoic acid (1) over a cinchonidine-modified Pd/C catalyst, the addition of hydrogen preferentially proceeds from the Re-Si enantioface of the C=C double bond of 1 to yield (S)-2-methylbutanoic acid ((S)-3). Double bond migration of 1 takes place under the reaction conditions and is followed by immediate hydrogenation to yield 3 in a poor enantiomeric purity. Deuterium labeling experiments at 0.1 MPa and 1.9 MPa of D-2 verified the previous assumption of competitive double bond migration. The combination of isotopic labeling experiments and chiral analysis revealed that the double bond migration of 1 proceeds with the same enantiofacial differentiation as the hydrogenation of 1. Thus, interaction of 1 with cinchonidine adsorbed on the Pd surface may control the configuration of the double bond migration and the hydrogenation.

About (E)-2-Methylbut-2-enoic acid, If you have any questions, you can contact Sugimura, T; Tomatsuri, S; Fujita, M; Okamoto, Y or concate me.. Recommanded Product: 80-59-1

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Computed Properties of C8H8O2. Authors Tang, YC; Yang, M; Wang, FF; Hu, X; Wang, G in PERGAMON-ELSEVIER SCIENCE LTD published article about in [Tang, Yucai; Yang, Meng; Wang, Feifei; Hu, Xia; Wang, Gang] Hunan Univ Arts & Sci, Coll Chem & Mat Engn, Hunan Prov Cooperat Innovat Ctr Construct & Dev D, Changde 415000, Peoples R China; [Tang, Yucai] Hunan Prov Key Lab Water Treatment Funct Mat, Changde 415000, Peoples R China; [Tang, Yucai] Hunan Prov Engn Res Ctr Electroplating Wastewater, Changde 415000, Peoples R China in 2021.0, Cited 42.0. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5

A facile I2O5 induced radical relay addition/cyclization of activated alkenes with sulfonylhydrazides has been successfully developed, leading to a broad range of sulfonylated benzimidazo[2,1-a]isoquinolin-6 (5H)-ones in moderate to good yields. The protocol has advantages of a metal-, base-, acid-, peroxide-free process, simple operation, and broad functional group tolerance. (C) 2021 Elsevier Ltd. All rights reserved.

Computed Properties of C8H8O2. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Tang, YC; Yang, M; Wang, FF; Hu, X; Wang, G or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Synthesis of Homoallylic Alcohols with Acyclic Quaternary Centers through Co-III-Catalyzed Three-Component C-H Bond Addition to Internally Substituted Dienes and Carbonyls WOS:000479782900001 published article about ENANTIOSELECTIVE SYNTHESIS; STEREOGENIC CENTERS; FUNCTIONALIZATION; STEREOCENTERS; SYSTEMS; CONSTRUCTION; ACTIVATION in [Sun Dongbang; Shen, Zican; Ellman, Jonathan A.] Yale Univ, Dept Chem, 225 Prospect St, New Haven, CT 06520 USA in 2019.0, Cited 49.0. Application In Synthesis of 3-Hydroxybenzaldehyde. The Name is 3-Hydroxybenzaldehyde. Through research, I have a further understanding and discovery of 100-83-4

An efficient Co-III-catalyzed three-component strategy to prepare homoallylic alcohols containing acyclic quaternary centers is disclosed. This transformation enables the introduction of two C-C sigma bonds through C-H bond activation and sequential addition to internally substituted dienes and a wide range of aldehydes and activated ketones. Isoprene and other internally monosubstituted dienes are effective inputs, with the reaction proceeding with high diastereoselectivity for those substrate combinations that result in more than one stereogenic center. Moreover, the opposite relative stereochemistry can be achieved by employing 1,2-disubstituted dienes. A mechanism for the transformation is proposed based upon the relative stereochemistry of the products and studies with isotopically labeled starting materials.

Application In Synthesis of 3-Hydroxybenzaldehyde. About 3-Hydroxybenzaldehyde, If you have any questions, you can contact Sun, DB; Shen, ZC; Ellman, JA or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Category: indole-building-block. Yoshida, K; Yamamoto, T; Tajima, K; Isono, T; Satoh, T in [Isono, Takuya; Satoh, Toshifumi] Hokkaido Univ, Grad Sch Chem Sci & Engn, Sapporo, Hokkaido 0808628, Japan; Hokkaido Univ, Fac Engn, Sapporo, Hokkaido 0808628, Japan published Installing a functional group into the inactive omega-chain end of PMMA and PS-b-PMMA by terminal-selective transesterification in 2019.0, Cited 52.0. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6.

Polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) has been widely used as a nanotemplate material for the block copolymer lithography. Thus, development of a simple method to functionalize the inherently inactive PS-b-PMMA is of considerable interest to expand its potential applications. Herein, we demonstrate that titanium alkoxide-catalyzed transesterification can be a versatile chain-end functionalization method for proton-terminated PS-b-PMMA. Starting from anionically synthesized PMMA and PS-b-PMMA, the ester-side chain of the MMA unit at the omega-chain end was selectively transesterified in the presence of various alcohols with the aid of the corresponding titanium alkoxides to yield the end-functionalized PMMAs and PS-b-PMMAs. A wide range of alcohols containing various functional groups (e.g., alkyl chains, aromatic rings, and fluorocarbon chains) were utilized for terminal-selective transesterification. Clickable groups (e.g., pentafluorobenzyl and azido) were also successfully incorporated into the omega-terminal MMA unit, which serves as the reactive site for further modification. Importantly, even the hydroxy-functionalized polymer poly(ethylene glycol) monomethyl ether could be used for the terminal-selective transesterification of PS-b-PMMA, yielding a polystyrene-block-poly(methyl methacrylate)-block-poly(ethylene glycol) triblock terpolymer. The present transesterification system can be a powerful tool for chain-end functionalization of the inactive chain-end of PS-b-PMMA, providing insight into the effect of the chain-end structure on microphase separation behavior.

Category: indole-building-block. About Benzyl Alcohol, If you have any questions, you can contact Yoshida, K; Yamamoto, T; Tajima, K; Isono, T; Satoh, T or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Identification of 4-anilino-6-aminoquinazoline derivatives as potential MERS-CoV inhibitors WOS:000576785800014 published article about RESPIRATORY SYNDROME CORONAVIRUS; DISCOVERY in [Lee, Jun Young; Shin, Young Sup; Kwon, Sunoh; Jin, Young-hee; Jang, Min Seong; Song, Jong Hwan; Kim, Hyoung Rae; Park, Chul Min] Korea Res Inst Chem Technol, Ctr Convergent Res Emerging Virus Infect CEVI, 141 Gajeong Ro, Daejeon 34114, South Korea; [Lee, Jihye; Kim, Seungtaek] Inst Pasteur Korea, Zoonot Virus Lab, Seongnam Si 13488, Gyeonggi Do, South Korea; [Kwon, Sunoh] Korea Inst Oriental Med, Herbal Med Res Div, Daejeon 34054, South Korea; [Jin, Young-hee] Korea Inst Oriental Med, KM Applicat Ctr, Daegu 41062, South Korea; [Jang, Min Seong] Korea Inst Toxicol, Dept Nonclin Studies, Daejeon 34114, South Korea in 2020.0, Cited 19.0. Quality Control of 3-Hydroxybenzaldehyde. The Name is 3-Hydroxybenzaldehyde. Through research, I have a further understanding and discovery of 100-83-4

New therapies for treating coronaviruses are urgently needed. A series of 4-anilino-6-aminoquinazoline derivatives were synthesized and evaluated to show high anti-MERS-CoV activities. N-4-(3-Chloro-4-fluorophenyl)-N-6-(3-methoxybenzyl)quinazoline-4,6-diamine (1) has been identified in a random screen as a hit compound for inhibiting MERS-CoV infection. Throughout optimization process, compound 20 was found to exhibit high inhibitory effect (IC50 = 0.157 mu M, SI = 25) with no cytotoxicity and moderate in vivo PK properties.

About 3-Hydroxybenzaldehyde, If you have any questions, you can contact Lee, JY; Shin, YS; Lee, J; Kwon, S; Jin, YH; Jang, MS; Kim, S; Song, JH; Kim, HR; Park, CM or concate me.. Quality Control of 3-Hydroxybenzaldehyde

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Computed Properties of C7H8O. Recently I am researching about LAYER STRUCTURE PRESERVATION; BRONSTED ACID SITES; MFI ZEOLITE; NANOSHEETS; MWW; EXFOLIATION; SELECTIVITY; PRECURSORS; MEMBRANES; MCM-36, Saw an article supported by the China Scholarship CouncilChina Scholarship Council; U.S. National Science FoundationNational Science Foundation (NSF) [CBET-1706059]; Catalysis Center for Energy Innovation – U.S. Department of Energy, Office of Science, Office of Basic Energy SciencesUnited States Department of Energy (DOE) [DE-SC0001004]; Maryland NanoCenter and its NispLab; NSF as an MRSEC Shared Experimental Facility. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Wei, L; Song, KC; Wu, W; Holdren, S; Zhu, GH; Shulman, E; Shang, WJ; Chen, HY; Zachariah, MR; Liu, DX. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol

Two-dimensional (2D) layered zeolites are new forms of 3D zeolite frameworks. They can be pillared to form more open porous structures with increased access for reactants that are too big for the micropores of zeolites. The current pillaring procedure, however, requires intercalation of pillaring precursors by dispersing 2D zeolite in an alkoxide liquid and hydrolizing entrapped alkoxide to form inorganic oxide pillars in an aqueous alkaline solution. Both steps use excess solvents, generate significant waste, and require multiple synthesis and separation steps. Here we report a vapor-phase pillarization (VPP) process to produce pillared zeolites from 2D layered zeolite structures. The VPP process has similar to 100% efficiency of alkoxide usage in the intercalation step, requires less (and, in some cases, zero) water addition in the hydrolysis step, does not require separation for product recovery, and generates no liquid waste. Furthermore, synthesis of pillared zeolites via the VPP process can be accomplished within a single apparatus with one-time operation. The pillared zeolite prepared by the VPP method preserved the zeolitic layered structure as well as acidity and showed enhancement in catalytic alkylation of mesitylene with benzyl alcohol compared to 2D layered zeolite without pillarization treatment.

Computed Properties of C7H8O. About Benzyl Alcohol, If you have any questions, you can contact Wei, L; Song, KC; Wu, W; Holdren, S; Zhu, GH; Shulman, E; Shang, WJ; Chen, HY; Zachariah, MR; Liu, DX or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Authors Diarnanti, KS; Alygizakis, NA; Nika, MC; Oswaldova, M; Oswald, P; Thomaidis, NS; Slobodnik, J in SPRINGER HEIDELBERG published article about HEAVY-METALS; WATER; METABOLITES; PHARMACEUTICALS; IDENTIFICATION; TRANSFORMATION; PESTICIDES; TOXICITY; PRODUCTS; SUPPORT in [Diarnanti, Konstantina S.; Alygizakis, Nikiforos A.; Nika, Maria-Christina; Thomaidis, Nikolaos S.] Natl & Kapodistrian Univ Athens, Dept Chem, Lab Analyt Chem, Athens 15771, Greece; [Alygizakis, Nikiforos A.; Oswaldova, Martina; Oswald, Peter; Slobodnik, Jaroslav] Environm Inst, Okruzna 784-42, Kos 97241, Slovakia in 2020, Cited 41. Product Details of 80-59-1. The Name is (E)-2-Methylbut-2-enoic acid. Through research, I have a further understanding and discovery of 80-59-1

The quality of the Dniester River Basin has been seriously impacted by the chemicals released by agriculture, industry, and wastewater discharges. To assess its current chemical pollution status, a transboundary monitoring campaign was conducted in May 2019. Thirteen surface water, 13 sediment, and three biota samples were collected and analyzed using generic sample preparation methods for the determination of organic substances by liquid chromatography high-resolution mass spectrometry (LC-HRMS) and metals by inductively coupled plasma mass spectrometry (ICP-MS). Wide-scope target and suspect screening resulted in detection of Water Framework Directive (WFD) priority substances and emerging contaminants, whereas the raw data were stored in NORMAN Digital Sample Freezing Platform (DSFP) for future retrospective screening. Furthermore, risk assessment was performed to prioritize detected substances and propose a draft list of river basin-specific pollutants. All studied metals (As, Hg, Zn, Cu, Cr, Cd, Pb, Ni) were detected in the surface water and sediments. In total, 139 organic contaminants belonging to various chemical classes (pesticides, pharmaceuticals, drugs of abuse, stimulants, sweeteners, industrial chemicals, and their transformation products) were detected. The highest cumulative concentration of contaminants was observed in surface water from the Byk River, a tributary of the Dniester (Moldova). Concentrations of WFD priority substances diuron and mercury and EU Watch List neonicotinoid compounds imidacloprid and thiamethoxam exceeded their environmental quality standards (EQS), whereas concentrations of 23 emerging substances exceeded their predicted no-effect concentration (PNEC) at minimum one site. Emerging contaminants telmisartan, metolachlor, terbuthylazine, and 4-acetamidoantipyrine were prioritized as potential river basin-specific pollutants. Graphical abstract

Product Details of 80-59-1. About (E)-2-Methylbut-2-enoic acid, If you have any questions, you can contact Diarnanti, KS; Alygizakis, NA; Nika, MC; Oswaldova, M; Oswald, P; Thomaidis, NS; Slobodnik, J or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

In 2019.0 J AM CHEM SOC published article about COVALENT POLYMER NETWORKS; SILICA in [He, Changfei; Shi, Shaowei; Wang, Dong; Russell, Thomas P.] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China; [He, Changfei; Shi, Shaowei; Wang, Dong; Russell, Thomas P.] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China; [Helms, Brett A.] Lawrence Berkeley Natl Lab, Mol Foundry, 1 Cyclotron Rd, Berkeley, CA 94720 USA; [Russell, Thomas P.] Univ Massachusetts, Polymer Sci & Engn Dept, Amherst, MA 01003 USA; [Russell, Thomas P.] Lawrence Berkeley Natl Lab, Mat Sci Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA in 2019.0, Cited 34.0. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4. Recommanded Product: 4′-Hydroxyacetophenone

Vitrimers are network polymers that undergo associative bond exchange reactions in the condensed phase above a threshold temperature, dictated by the exchangeable bonds comprising the vitrimer. For vitrimers, chemistries reliant on poorly nudeophilic bond exchange partners (e.g., hydroxy-functionalized alkanes) or poorly electrophilic exchangeable bonds, catalysts are required to lower the threshold temperature, which is undesirable in that catalyst leaching or deactivation diminishes its influence over time and may compromise reuse. Here we show how to access catalyst-free bond exchange reactions in catalyst-dependent polyester vitrimers by obviating conventional ester bonds in favor of oxime-esters. Poly(oxime-ester) (POE) vitrimers are synthesized using thiol-ene click chemistry, affording high stretchability and malleability. POE vitrimers are readily recycled with little degradation of their initial mechanical properties, suggesting exciting opportunities for sustainable plastics.

Recommanded Product: 4′-Hydroxyacetophenone. About 4′-Hydroxyacetophenone, If you have any questions, you can contact He, CF; Shi, SW; Wang, D; Helms, BA; Russell, TP or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recommanded Product: 99-93-4. In 2020.0 SCI CHINA CHEM published article about SP(3) C-H; 3 DIFFERENT KINDS; METAL-FREE; CONSTRUCTION; EFFICIENT; CATALYSIS; PORES; BONDS; FUNCTIONALIZATION; CRYSTALLINITY in [Liao, Qiaobo; Xu, Wentao; Huang, Xin; Ke, Can; Zhang, Qi; Xi, Kai; Xie, Jin] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Jiangsu Key Lab Adv Organ Mat, Nanjing 210023, Peoples R China in 2020.0, Cited 75.0. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4.

Three unprecedented 2D [4+3] covalent organic frameworks (TTCOF-1, TTCOF-2, and TTCOF-3) have been prepared by substoichiometric condensation of tetratopic and tritopic monomers, overcoming the limitations of the design rules of conventional topologies. By reticulating the tetraphenylethylene (TPE)-based and triazine-based moieties into COF frameworks, novel electron donor-acceptor (D-A) type structures were obtained. These TTCOFs have good photocatalytic activity in aerobic C(sp(3))-H bond functionalization and arylboronic acid oxidation driven by visible light, with yields up to 94%. This can expedite possibilities of COFs with new structural and topological complexities and can also expand the application of COF-based photocatalysis in synthetic chemistry.

About 4′-Hydroxyacetophenone, If you have any questions, you can contact Liao, QB; Xu, WT; Huang, X; Ke, C; Zhang, Q; Xi, K; Xie, J or concate me.. Recommanded Product: 99-93-4

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles