Author: Jessica.F

Recently I am researching about TRANSITION-METAL-COMPLEXES; KETONE ALPHA-ALKYLATION; ASYMMETRIC HYDROGENATION; BORONIC ESTERS; SIMPLE OLEFINS; VINYL ETHERS; RHODIUM; HYDROARYLATION; DIPHOSPHINES; HYDROFORMYLATION, Saw an article supported by the University of ChicagoUniversity of Chicago; NSFNational Science Foundation (NSF) [CHE-1855556]; Dalian Institute of Chemical Physics international talent training project. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Chen, XY; Zhou, XK; Wang, JC; Dong, GB. The CAS is 2005-10-9. Through research, I have a further understanding and discovery of 6H-Benzo[c]chromen-6-one. Quality Control of 6H-Benzo[c]chromen-6-one

In contrast to the plethora of large-bite-angle bisphosphine ligands available to transition-metal catalysis, the development of small-bite-angle bisphosphine ligands has suffered from the limited structural variations accessible on their single-atom-containing backbones. Herein, we report the design and applications of a discrete very small bite-angle bisphosphine ligand, namely, FMPhos. Featuring a fluorene-methylene unit appended on the single-carbon linker, the ligand harbors an unusually rigid backbone that presumably stabilizes its complexation with transition metals during catalysis. Compared with the known dppm ligand, it exhibited superior reactivity and regioselectivity in a number of alkene hydrofunctionalization reactions, catalyzed by iridium and rhodium.

Quality Control of 6H-Benzo[c]chromen-6-one. About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Chen, XY; Zhou, XK; Wang, JC; Dong, GB or concate me.

Reference:
Article; Zhang, Jian; Shi, Dongdong; Zhang, Haifeng; Xu, Zheng; Bao, Hanyang; Jin, Hongwei; Liu, Yunkui; Tetrahedron; vol. 73; 2; (2017); p. 154 – 163;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

An article Carboxylation of Aryl Triflates with CO2 Merging Palladium and Visible-Light-Photoredox Catalysts WOS:000473116000050 published article about C-H FUNCTIONALIZATION; CARBON-DIOXIDE; DUAL CATALYSIS; DRIVEN CARBOXYLATION; UNACTIVATED PRIMARY; BUILDING-BLOCK; BONDS; HALIDES; ACIDS; HYDROCARBOXYLATION in [Bhunia, Samir Kumar; Das, Pritha; Nandi, Shantanu; Jana, Ranjan] CSIR Indian Inst Chem Biol, Organ & Med Chem Div, 4 Raja SC Mullick Rd, Kolkata 700032, W Bengal, India; [Bhunia, Samir Kumar; Jana, Ranjan] Acad Sci & Innovat Res AcSIR, Kolkata 700032, W Bengal, India in 2019.0, Cited 88.0. The Name is 6H-Benzo[c]chromen-6-one. Through research, I have a further understanding and discovery of 2005-10-9. Application In Synthesis of 6H-Benzo[c]chromen-6-one

We report herein a visible-light-promoted, highly practical carboxylation of readily accessible aryl triflates at ambient temperature and a balloon pressure of CO2 by the combined use of palladium and photoredox Ir(III) catalysts. Strikingly, the stoichiometric metallic reductant is replaced by a nonmetallic amine reductant providing an environmentally benign carboxylation process. In addition, one-pot synthesis of a carboxylic acid directly from phenol and modification of estrone and concise synthesis of pharmaceutical drugs adapalene and bexarotene have been accomplished via late-stage carboxylation reaction. Furthermore, a parallel decarboxylation-carboxylation reaction has been demonstrated in an H-type closed vessel that is an interesting concept for the strategic sector. Spectroscopic and spectroelectrochemical studies indicated electron transfer from the Ir(III)/DIPEA combination to generate aryl carboxylate and Pd(0) for catalytic turnover.

Application In Synthesis of 6H-Benzo[c]chromen-6-one. About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Bhunia, SK; Das, P; Nandi, S; Jana, R or concate me.

Reference:
Article; Zhang, Jian; Shi, Dongdong; Zhang, Haifeng; Xu, Zheng; Bao, Hanyang; Jin, Hongwei; Liu, Yunkui; Tetrahedron; vol. 73; 2; (2017); p. 154 – 163;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2020.0 ADV SYNTH CATAL published article about HYPERVALENT IODINE REAGENTS; ALPHA-TOSYLOXYLATION; KETONES; REACTIVITY; CATALYSIS in [Boelke, Andreas; Nachtsheim, Boris J.] Univ Bremen, Inst Organ & Analyt Chem, D-28359 Bremen, Germany in 2020.0, Cited 40.0. The Name is 6H-Benzo[c]chromen-6-one. Through research, I have a further understanding and discovery of 2005-10-9. Formula: C13H8O2

The reactivity of ortho-functionalized N-heterocycle-substituted iodoarenes (NHIAs) as organocatalysts in iodine(I/III)-mediated oxidations was systematically investigated in the alpha-tosyloxylation of ketones as the model reaction. During a systematic catalyst evolution, it was found that NH-triazoles and benzoxazoles have the most significant positive influence on the reactivity of the central iodine atom. A further catalyst improvement which focused on the substitution pattern of the arene revealed a remarkable ortho-effect. By introduction of an o-OMe group we were able to generate a novel NHIA with a so far unseen catalytic efficiency. This new catalyst is not only easy to synthesize but also enabled the alpha-tosyloxylation of carbonyl compounds at the lowest reported catalyst loading of only 1 mol%. Finally, the performance of this iodine(I) catalyst was successfully demonstrated in intramolecular oxidative couplings of biphenyls and oxidative rearrangements.

Formula: C13H8O2. About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Boelke, A; Nachtsheim, BJ or concate me.

Reference:
Article; Zhang, Jian; Shi, Dongdong; Zhang, Haifeng; Xu, Zheng; Bao, Hanyang; Jin, Hongwei; Liu, Yunkui; Tetrahedron; vol. 73; 2; (2017); p. 154 – 163;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Recently I am researching about PERFORMANCE LIQUID-CHROMATOGRAPHY; DIABETIC-NEPHROPATHY; CHEMICAL-CONSTITUENTS; ANTIOXIDANT ACTIVITY; OXIDATIVE STRESS; PATHOGENESIS; PHYTOCHEMISTRY; GLUCOSE; ETHNOPHARMACOLOGY; RESISTANCE, Saw an article supported by the National Natural Science Foundation of China (NNSFC)National Natural Science Foundation of China (NSFC) [82003929]; Hunan Key Laboratory for Bioanalysis of Complex Matrix Samples [2017TP1037]; Scientific research project of Hunan Administration of Traditional Chinese Medicine [2020096]. Published in ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER in ISSY-LES-MOULINEAUX ,Authors: Huang, Q; Zhang, FY; Liu, S; Jiang, YP; Ouyang, DS. The CAS is 103-26-4. Through research, I have a further understanding and discovery of Methyl 3-phenyl-2-propenoate. COA of Formula: C10H10O2

Bark is the traditional medicinal component of Eucommia ulmoides Oliver (E. ulmoides). However, the demand for E. ulmoides medicinal materials seriously limits their sustainability. To alleviate resource constraints, the bioactivity of E. ulmoides leaves and its pharmacodynamic basis were investigated. In the present study, extracts of E. ulmoides leaves were found to display potential renal protective properties in rat glomerular mesangial (HBZY-1) cells treated with high levels of glucose, suggesting that they possess potential factors capable of treating diabetic nephropathy. Ultra-performance liquid chromatography tandem quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) was used to comprehensively characterize the chemical components of E. ulmoides leaves. A total of 83 possible chemical components, including 12 iridoids, 13 flavonoids, 14 lignans, 20 phenylpropanoids, 14 phenolic acids, and 10 additional components, were identified in E. ulmoides leaves. Network pharmacology was used for a preliminary exploration of the potential mechanism of action of renal protection afforded by E. ulmoides leaves towards diabetic nephropathy. The network pharmacology results were verified using a series of biological experiments. The present study provided the basis for the comprehensive development and utilization of E. ulmoides leaves and the discovery of potential drugs.

COA of Formula: C10H10O2. About Methyl 3-phenyl-2-propenoate, If you have any questions, you can contact Huang, Q; Zhang, FY; Liu, S; Jiang, YP; Ouyang, DS or concate me.

Reference:
Article; Weng, Shiue-Shien; Ke, Chih-Shueh; Chen, Fong-Kuang; Lyu, You-Fu; Lin, Guan-Ying; Tetrahedron; vol. 67; 9; (2011); p. 1640 – 1648;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

COA of Formula: C10H11NO4. Li, Y; Dubreucq, L; Alvarenga, BG; Raynal, M; Bouteiller, L in [Li, Yan; Dubreucq, Ludovic; Alvarenga, Bruno G.; Raynal, Matthieu; Bouteiller, Laurent] Sorbonne Univ, CNRS, Inst Parisien Chim Mol, Equipe Chim Polymeres, 4 Pl Jussieu, F-75005 Paris, France; [Alvarenga, Bruno G.] Univ Estadual Campinas, UNICAMP, Dept Phys Chem, Inst Chem, Campinas, SP, Brazil published N-Substituted Benzene-1-Urea-3,5-Biscarboxamide (BUBA): Easily Accessible C-2-Symmetric Monomers for the Construction of Reversible and Chirally Amplified Helical Assemblies in 2019, Cited 85. The Name is Dimethyl 5-aminoisophthalate. Through research, I have a further understanding and discovery of 99-27-4.

Non-C-3-symmetric supramolecular helices are gaining interest for the design of hierarchical assemblies, for the compartmentalisation or the self-assembly of polymer chains and for application in asymmetric catalysis. Herein, N-substituted benzene-1-urea-3,5-biscarboxamide (BUBA) monomers, which consist of one urea and two carbon-connected amide functions linked to an aromatic ring, are introduced as an easily accessible class of C-2-symmetric supramolecular synthons. In apolar solvents, BUBA monomers assemble into long helical assemblies by means of hydrogen-bonding and aromatic interactions, as assessed by several analytical techniques. To probe the influence of the urea function, BUBA and related benzene-1,3,5-tricarboxamide (BTA) helical polymers have been compared, in terms of their thermodynamics of formation, stability, reversibility and chiral amplification properties. Similar to BTA, BUBA monomers form long helices reversibly through a highly cooperative mechanism and the helicity of their assemblies is governed by chiral amplification effects. However, precise quantification of their properties reveals that BUBA monomers assemble in a more cooperative manner. Also, chiral amplification operates to a higher extent in BUBA helices, as probed by both sergeants-and-soldiers and majority-rules experiments. Compatibility between urea and amide functions also allows the formation of co-assemblies that incorporate both BUBA and BTA monomers. Importantly, a small amount of chiral BUBA monomers in these co-assemblies is sufficient to obtain single-handed helices; thus paving the way towards the development of functional supramolecular helices.

COA of Formula: C10H11NO4. About Dimethyl 5-aminoisophthalate, If you have any questions, you can contact Li, Y; Dubreucq, L; Alvarenga, BG; Raynal, M; Bouteiller, L or concate me.

Reference:
Patent; ASTRA ZENECA AB; NPS PHARMACEUTICALS, INC.; WO2004/14881; (2004); A2;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

I found the field of Chemistry; Energy & Fuels; Engineering very interesting. Saw the article Comprehensive insights into xylan structure evolution via multi-perspective analysis during slow pyrolysis process published in 2019. Recommanded Product: Methyl 2,2-dimethoxyacetate, Reprint Addresses Wu, SB (corresponding author), South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China.. The CAS is 89-91-8. Through research, I have a further understanding and discovery of Methyl 2,2-dimethoxyacetate

Comprehension in hemicellulose pyrolysis is critical to generate renewable fuel and valuable chemical. Herein, a self-designed tubular reactor was applied to observe the appearance alteration and chemical structure evolution during the whole xylan pyrolysis process. Before 200 degrees C, it was free moisture removal stage without significant chemical structure alteration. Xylan began to depolymerize at 200 degrees C corresponding with the appearance change from its original state to dark brown, cleavage of branched-chain and primary product acids & ketones generation. The main chain of xylan was completely broken at 250-350 degrees C via beta-1,4-glycosidic bond cleavage, dehydration, decarboxylation, and decarbonylation reaction. Acids were mainly originated from hemicellulose pyrolysis. The typical signals from FTIR,C-13 CP/MAS NMR were disappeared at 350 degrees C. In the carbonation stage, the C/H and C/O ratio reached 2.01 and 4.54, leading to the aromaticity enhancement of char and formation of carbon-centered radicals.

About Methyl 2,2-dimethoxyacetate, If you have any questions, you can contact Liang, JJ; Chen, J; Wu, SB; Liu, C; Lei, M or concate me.. Safety of Methyl 2,2-dimethoxyacetate

Reference:
Patent; U C B, Societe Anonyme; US4041077; (1977); A;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Authors Karmakar, A; Paul, A; Rubio, GMDM; Soliman, MMA; Fatima, M; da Silva, CG; Pombeiro, AJL in FRONTIERS MEDIA SA published article about ACID; CATALYSIS; MOFS in [Karmakar, Anirban; Paul, Anup; Rubio, Guilherme M. D. M.; Soliman, Mohamed M. A.; Fatima, M.; Guedes da Silva, C.; Pombeiro, Armando J. L.] Univ Lisbon, Inst Super Tecn, Ctr Quim Estrutural, Lisbon, Portugal in 2019, Cited 31. HPLC of Formula: C10H11NO4. The Name is Dimethyl 5-aminoisophthalate. Through research, I have a further understanding and discovery of 99-27-4

A pyridine-based amide functionalized tetracarboxylic acid, 5,5 ‘-(pyridine-2, 6-dicarbonyl)bis(azanediyl)}diisophthalic acid (H4L), was synthesized and its coordination chemistry toward zinc(II) and cadmium(II) ions was studied. The reactions of H4L with Zn(NO3)(2).6H(2)O and Cd(NO3)(2).4H(2)O led to its full or partial deprotonation, respectively, and the formation of the 2D coordination polymers [Zn-2(L)(H2O)(4)](n).4n(H2O) (1) and [Cd-3(HL)(2)(DMF)(4)](n).4n(DMF) (2) (DMF = N,N’-dimethylformamide), respectively. They were characterized by elemental analysis, FT-IR, photoluminescence, thermogravimetry, and single-crystal and powder X-ray diffraction. In 1, the L4- ligand is planar with every carboxylate anion binding a Zn(II) cation and giving rise to a 2D grid with the metals with tetrahedral environments. In 2, the combination of bridging HL3- and dimethylformamide to form trinuclear Cd(II) clusters engenders secondary building block units and generates a layer-type 2D network with the metals with octahedral and pentagonal bipyramid coordination geometries. The topological analyses of 1 and 2 reveal 2,4-connected and 3,6-connected binodal nets, respectively. On account of the presence of Lewis acid (Zn or Cd centers) as well as basic (uncoordinated pyridine and amide groups) sites, 1 and (to a much lower extent) 2 effectively catalyze the one-pot cascade deacetalization-Knoevenagel condensation reactions under quite mild conditions. They act as heterogeneous catalysts, being easy to recover and recycle without losing activity.

About Dimethyl 5-aminoisophthalate, If you have any questions, you can contact Karmakar, A; Paul, A; Rubio, GMDM; Soliman, MMA; Fatima, M; da Silva, CG; Pombeiro, AJL or concate me.. Application In Synthesis of Dimethyl 5-aminoisophthalate

Reference:
Patent; ASTRA ZENECA AB; NPS PHARMACEUTICALS, INC.; WO2004/14881; (2004); A2;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

I found the field of Biochemistry & Molecular Biology; Entomology; Physiology very interesting. Saw the article Antibacterial mode of action of trans-cinnamaldehyde derived from cinnamon bark (Cinnamomum verum) essential oil against Agrobacterium tumefaciens published in 2020.0. Formula: C10H10O2, Reprint Addresses Park, IK (corresponding author), Seoul Natl Univ, Coll Agr & Life Sci, Dept Forest Sci, Seoul 08826, South Korea.. The CAS is 103-26-4. Through research, I have a further understanding and discovery of Methyl 3-phenyl-2-propenoate

The fumigant antibacterial activities of 50 plant essential oils belonging to 10 families were investigated against Agrobacterium tumefaciens. Among the test plant essential oils, Cinnamomum verum (cinnamon bark) essential oil showed the most potent fumigant antibacterial activity. When we investigated the antibacterial activities of compounds identified from cinnamon bark essential oil and 9 congeners of trans-cinnamaldehyde, lengths of inhibition zone of trans-cinnamaldehyde, salicylaldehyde and hydrocinnamaldehyde were 1.28, 1.73, and 1.24 cm at 0.625 mg/paper disc concentration, respectively. To determine the mode of action of trans-cinnamaldehyde and salicylaldehyde, intercellular reactive oxygen species (ROS) generation and cell membrane integrity were determined using a confocal laser scanning microscopy. Furthermore, we compared the up- and down-regulated gene expression of A. tumefaciens treated with trans-cinnamaldehyde and salicylaldehyde with that of untreated A. tumefaciens. With cutoffs of vertical bar log2FC vertical bar > 1 and FDR < 0.05, 29 and 43 down-regulated genes and 27 and 117 up-regulated genes were found in the treatment of trans-cinnamaldehyde and salicylaldehyde, respectively. Based on the ROS generation results, cell membrane integrity assay, and gene expression, we conclude that the antibacterial mode of action of trans-cinnamaldehyde and salicylaldehyde is ROS generation by the Fenton reaction caused by the down-regulation of an ATP synthesis-related gene cluster, corrupted iron ion homeostasis, and a corrupted ROS defense mechanism. The high concentration of ROS damaged the A. tumefaciens cell membrane, which caused cell death. Formula: C10H10O2. About Methyl 3-phenyl-2-propenoate, If you have any questions, you can contact Lee, JE; Jung, M; Lee, SC; Huh, MJ; Seo, SM; Park, IK or concate me.

Reference:
Article; Weng, Shiue-Shien; Ke, Chih-Shueh; Chen, Fong-Kuang; Lyu, You-Fu; Lin, Guan-Ying; Tetrahedron; vol. 67; 9; (2011); p. 1640 – 1648;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Product Details of 103-25-3. In 2020.0 CHEM COMMUN published article about OXIDATIVE CARBONYLATION; ADIPIC ACID; HYDROFORMYLATION; METHOXYCARBONYLATION; ALKENES; CO; LIGAND; CARBON; PD in [Yang, Ji; Liu, Jiawang; Ge, Yao; Huang, Weiheng; Schneider, Carolin; Duehren, Ricarda; Neumann, Helfried; Jackstell, Ralf; Beller, Matthias] Leibniz Inst Katalyse, Albert Einstein Str 29a, D-18059 Rostock, Germany; [Franke, Robert] Evon Ind AG, Paul Baumann Str 1, D-45772 Marl, Germany; [Franke, Robert] Lehrstuhl Theoret Chem, D-44780 Bochum, Germany in 2020.0, Cited 54.0. The Name is Methyl 3-phenylpropionate. Through research, I have a further understanding and discovery of 103-25-3.

Hydroxy- and alkoxycarbonylation reactions constitute important industrial processes in homogeneous catalysis. Nowadays, palladium complexes constitute state-of-the-art catalysts for these transformations. Herein, we report the first efficient platinum-catalysed alkoxycarbonylations of olefins including sterically hindered and functionalized ones. This atom-efficient catalytic transformation provides straightforward access to a variety of valuable esters in good to excellent yields and often with high selectivities. In kinetic experiments the activities of Pd- and Pt-based catalysts were compared. Even at low catalyst loading, Pt shows high catalytic activity.

Product Details of 103-25-3. About Methyl 3-phenylpropionate, If you have any questions, you can contact Yang, J; Liu, JW; Ge, Y; Huang, WH; Schneider, C; Duhren, R; Franke, R; Neumann, H; Jackstell, R; Beller, M or concate me.

Reference:
Patent; SANOFI; US2011/294788; (2011); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

An article The production of 4-ethyltoluene via directional valorization of lignin WOS:000524318900003 published article about WATER-GAS SHIFT; ACID-CATALYZED DEPOLYMERIZATION; ANISOLE DECOMPOSITION; RHODIUM; ALKYLATION; MECHANISM; HYDROGENOLYSIS; TRANSFORMATION; ETHYLTOLUENE; EFFICIENT in [Shen, Xiaojun; Meng, Qinglei; Mei, Qingqing; Xiang, Junfeng; Liu, Huizhen; Han, Buxing] Chinese Acad Sci, CAS Key Lab Colloid & Interface & Thermodynam, CAS ResearchEducat Ctr Excellence Mol Sci, Beijing Natl Lab Mol Sci,Inst Chem,CAS Res Educ C, Beijing 100190, Peoples R China; [Shen, Xiaojun; Xiang, Junfeng; Liu, Huizhen; Han, Buxing] Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China; [Shen, Xiaojun; Meng, Qinglei; Xiang, Junfeng; Liu, Huizhen; Han, Buxing] Huairou Natl Comprehens Sci Ctr, Phys Sci Lab, Beijing 101407, Peoples R China; [Han, Buxing] East China Normal Univ, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China in 2020.0, Cited 41.0. Quality Control of Methyl 3-phenyl-2-propenoate. The Name is Methyl 3-phenyl-2-propenoate. Through research, I have a further understanding and discovery of 103-26-4

4-Ethyltoluene is a very valuable chemical that is currently produced from fossil feedstocks. Production of 4-ethyltoluene from renewable and cheap lignin is of great significance. Herein, we report a new route to produce 4-ethyltoluene from lignin. It was discovered that RhCl3-LiI-LiBF4 was an efficient catalytic system for the reaction of lignin with CO to form 4-ethyltoluene. In the reaction, ethylbenzene was first formed via demethoxylation and depolymerization of lignin, which was further transformed into 4-ethyltoluene by methylation using methoxy from the lignin. The yield of 4-ethyltoluene could reach 9.5 wt% when GVL-lignin was used as the starting material. Interestingly, 5.2 wt% yield of 4-ethyltoluene was obtained when raw poplar was directly used as the starting material. As far as we know, the transformation of lignin with 4-ethyltoluene as the major product has not been reported. This work provides a new strategy to produce valuable aromatic compounds from renewable resources.

Quality Control of Methyl 3-phenyl-2-propenoate. About Methyl 3-phenyl-2-propenoate, If you have any questions, you can contact Shen, XJ; Meng, M; Mei, QQ; Xiang, JF; Liu, HZ; Han, BX or concate me.

Reference:
Article; Weng, Shiue-Shien; Ke, Chih-Shueh; Chen, Fong-Kuang; Lyu, You-Fu; Lin, Guan-Ying; Tetrahedron; vol. 67; 9; (2011); p. 1640 – 1648;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics