Category: esters-buliding-blocks

An article Facile synthesis of a highly efficient Co/Cu@NC catalyst for base-free oxidation of alcohols to esters WOS:000536157700015 published article about SELECTIVE TRANSFER HYDROGENATION; ACTIVE-SITES; NANOPARTICLES; ESTERIFICATION; CO; ALDEHYDES; FE; NITROARENES; PERFORMANCE; COMPLEXES in [Jiang, Jiusheng; Li, Xiang; Du, Shengyu; Shi, Langchen; Jiang, Pingping; Zhang, Pingbo; Dong, Yuming; Leng, Yan] Jiangnan Univ, Sch Chem & Mat Engn, Lihu Rd 1800, Wuxi 214122, Jiangsu, Peoples R China in 2020.0, Cited 48.0. Safety 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

The direct oxidation of alcohols to esters is an environmentally benign and cost-effective organic synthetic strategy, but it is still a great challenge to discover an economic, highly active, and long-term stable catalyst for efficient transformation of alcohols to esters under milder conditions. Herein, we developed cobalt and copper nanoparticle -co-decorated nitrogen-doped carbon catalysts (CoCu@NCn) through two steps of ball milling and calcination. It was found that CoCu@NCn could catalyze the oxidation of alcohols to esters effectively in the absence of basic additives. The catalytic activity was much higher than those of monometallic Co@NC2 and Cu@NC2 samples, and the catalyst can be conveniently recovered and quite steadily reused. Through a series of control experiments and characterizations, it is concluded that the remarkable catalytic performance of CoCu@NC2 was associated with the synergistic effect between the two metal components, the enhanced basic active sites and the active surface area.

About Methyl 3-phenyl-2-propenoate, If you have any questions, you can contact Jiang, JS; Li, X; Du, SY; Shi, LC; Jiang, PP; Zhang, PB; Dong, YM; Leng, Y or concate me.. Safety of Methyl 3-phenyl-2-propenoate

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

Recommanded Product: 2005-10-9. Recently I am researching about C-H AMINATION; EXCITED-STATE; LIGNIN; BENZENE; SPIROCYCLIZATION; NAPHTHALENE; DERIVATIVES; CYCLIZATION; OXIDATION; CLEAVAGE, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21711530020, 21721004, 21690082, 21690084, 21690080]; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDB17020300, XDB17000000]; STINT [CH2016-6755]; NSFCNational Natural Science Foundation of China (NSFC); Swedish Energy AgencySwedish Energy Agency [P39427-1]. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Li, HJ; Subbotina, E; Bunrit, A; Wang, F; Samec, JSM. The CAS is 2005-10-9. Through research, I have a further understanding and discovery of 6H-Benzo[c]chromen-6-one

The idea of using biaryl structures to generate synthetic building blocks such as spirolactones is attractive because biaryl structures are abundant in biomass waste streams. However, the inertness of aromatic rings of biaryls makes it challenging to transform them into functionalized structures. In this work, we developed photoinduced dearomatization of nonphenolic biaryl compounds to generate spirolactones. We demonstrate that dearomatization can be performed via either aerobic photocatalysis or anaerobic photooxidation to tolerate specific synthetic conditions. In both pathways, dearomatization is induced by electrophilic attack of the carboxyl radical. The resulting spirodiene radical is captured by either oxygen or water in aerobic and anaerobic systems, respectively, to generate the spirodienone. These methods represent novel routes to synthesize spirolactones from the biaryl motif.

Recommanded Product: 2005-10-9. About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Li, HJ; Subbotina, E; Bunrit, A; Wang, F; Samec, JSM 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

Formula: C10H12O2. In 2019.0 ORG LETT published article about CATALYZED CARBONYLATIVE SYNTHESIS; BENZYLIC AMINES; CROSS-COUPLINGS; ALKYL IODIDES; FUNCTIONALIZATION; TRANSFORMATIONS; HETEROCYCLES; RADICALS; ALCOHOLS in [Li, Chong-Liang; Wu, Xiao-Feng] Zhejiang Sci Tech Univ, Dept Chem, Xiasha Campus, Hangzhou 310018, Peoples R China; [Li, Chong-Liang; Wu, Xiao-Feng] Univ Rostock, Leibniz Inst Katalyse eV, Albert Einstein Str 29a, D-18059 Rostock, Germany; [Jiang, Xuan; Lu, Liang-Qiu; Xiao, Wen-Jing] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China in 2019.0, Cited 51.0. The Name is Methyl 3-phenylpropionate. Through research, I have a further understanding and discovery of 103-25-3.

The first cobalt-catalyzed deaminative alkoxycarbonylation reaction was described for the conversion of readily available primary alkyl amines to synthetically versatile esters with moderate to high yields. This transformation shows good functional group compatibility and can serve as a powerful tool for the modification of alkyl amine-containing complex natural products and drug molecules.

About Methyl 3-phenylpropionate, If you have any questions, you can contact Li, CL; Jiang, X; Lu, LQ; Xiao, WJ; Wu, XF or concate me.. Formula: C10H12O2

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

Authors Pan, C; Wang, LM; Han, JW in AMER CHEMICAL SOC published article about C-F BOND; H DUAL ACTIVATION; CASCADE ANNULATION; CARBOXYLIC-ACIDS; ARYL MIGRATION; ARYLATION; ACCESS; DERIVATIVES; EXTENSION; NITRILES in [Pan, Cheng; Wang, Limin; Han, Jianwei] East China Univ Sci & Technol, Key Lab Adv Mat, Inst Fine Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China; [Pan, Cheng; Wang, Limin; Han, Jianwei] East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China; [Han, Jianwei] Chinese Acad Sci, Shanghai Hong Kong Joint Lab Chem Synth, Shanghai Inst Organ Chem, Shanghai 200032, Peoples R China in 2020.0, Cited 68.0. Application In Synthesis of 6H-Benzo[c]chromen-6-one. The Name is 6H-Benzo[c]chromen-6-one. Through research, I have a further understanding and discovery of 2005-10-9

By using 2-fluoro-substituted diaryliodonium salts, a novel benzocylization has been accomplished for the synthesis of 3,4-benzocoumarin derivatives via a cascade of ortho-arylation and defluorination in the presence of palladium catalysts. The reaction exhibits a broad compatibility of readily available aromatic acids with an excellent level of site-selectivity. Mechanistic investigations revealed a unique reactivity of carboxylic acid directed arylation by followed nucleophilic substitution of aromatic fluoride in the present system.

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 Pan, C; Wang, LM; Han, JW 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

Baker, MA; Demoret, RM; Ohtawa, M; Shenvi, RA in [Baker, Meghan A.; Demoret, Robert M.; Ohtawa, Masaki; Shenvi, Ryan A.] Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USA; [Ohtawa, Masaki] Kitasato Univ, Grad Sch Pharmaceut Sci, Tokyo, Japan published Concise asymmetric synthesis of (-)-bilobalide in 2019, Cited 29. Quality Control of Methyl 2,2-dimethoxyacetate. The Name is Methyl 2,2-dimethoxyacetate. Through research, I have a further understanding and discovery of 89-91-8.

The Ginkgo biloba metabolite bilobalide is widely ingested by humans but its effect on the mammalian central nervous system is not fully understood(1-4). Antagonism of gamma-aminobutyric acid A receptors (GABA(A)Rs) by bilobalide has been linked to the rescue of cognitive deficits in mouse models of Down syndrome(5). A lack of convulsant activity coupled with neuroprotective effects have led some to postulate an alternative, unidentified target(4); however, steric congestion and the instability of bilobalide(1,2,6) have prevented pull-down of biological targets other than the GABA(A)Rs. A concise and flexible synthesis of bilobalide would facilitate the development of probes for the identification of potential new targets, analogues with differential selectivity between insect and human GABA(A)Rs, and stabilized analogues with an enhanced serum half-life(7). Here we exploit the unusual reactivity of bilobalide to enable a late-stage deep oxidation that symmetrizes the molecular core and enables oxidation states to be embedded in the starting materials. The same overall strategy may be applicable to G. biloba congeners, including the ginkgolides-some of which are glycine-receptor-selective antagonists(8). A chemical synthesis of bilobalide should facilitate the investigation of its biological effects and its therapeutic potential.

Quality Control of Methyl 2,2-dimethoxyacetate. About Methyl 2,2-dimethoxyacetate, If you have any questions, you can contact Baker, MA; Demoret, RM; Ohtawa, M; Shenvi, RA or concate me.

Reference:
Patent; U C B, Societe Anonyme; US4041077; (1977); A;,
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. Safety of 6H-Benzo[c]chromen-6-one. The Name is 6H-Benzo[c]chromen-6-one. Through research, I have a further understanding and discovery of 2005-10-9

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.

Safety 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

Name: Methyl 2,2-dimethoxyacetate. In 2019 FUEL PROCESS TECHNOL published article about BIOMASS PYROLYSIS; MECHANISTIC MODEL; CORN STALK; HEMICELLULOSE; CELLULOSE; LIGNIN; POLYSACCHARIDES; COMPONENTS; BEHAVIORS; PRODUCTS in [Liang, Jiajin; Chen, Jiao; Wu, Shubin; Liu, Chao; Lei, Ming] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China in 2019, Cited 42. The Name is Methyl 2,2-dimethoxyacetate. Through research, I have a further understanding and discovery of 89-91-8.

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.

Name: Methyl 2,2-dimethoxyacetate. 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.

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

An article Metabolite profiling, antioxidant and alpha-glucosidase inhibitory activities of buckwheat processed by solid-state fermentation with Eurotium cristatum YL-1 WOS:000663303400019 published article about BIOACTIVE COMPOUNDS; PHENOLIC-COMPOUNDS; CAFFEIC ACID; EXTRACTION; CAPACITY; BIOTRANSFORMATION; SOYBEANS; L. in [Xiao, Yu; Wu, Xing; Yao, Xinshuo; He, Cheng; Li, Zongjun; Wang, Yuanliang] Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Peoples R China; [Chen, Yulian] Hunan Agr Univ, Coll Anim Sci & Technol, Changsha 410128, Peoples R China; [Xiao, Yu; Li, Zongjun; Wang, Yuanliang] Hunan Prov Key Lab Food Sci & Biotechnol, Changsha 410128, Peoples R China; [Ho, Chi-Tang] Rutgers State Univ, Dept Food Sci, 65 Dudley Rd, New Brunswick, NJ 08901 USA in 2021, Cited 39. The Name is Methyl 3-phenyl-2-propenoate. Through research, I have a further understanding and discovery of 103-26-4. Recommanded Product: 103-26-4

Buckwheat was processed by solid-state fermentation (SSF) with the probiotic fungal strain Eurotium cristatum YL-1. The effects of SSF on the phytochemical content, as well as the antioxidant and alpha-glucosidase inhibitory activities, on buckwheat were revealed. Metabolite differences between non-fermented buckwheat (BW) and E. cristatum fermented buckwheat (FBW) were investigated by LC-MS/MS-based untargeted metabolomics. Results showed that 103 and 68 metabolites remarkably differed between BW and FBW in positive and negative ionization modes, respectively. Most phenolic compounds and alkaloids were significantly up-regulated during SSF. Hydrolytic enzymes (i.e., beta-glucosidase, alpha-amylase, protease, and cellulase) were produced by the filamentous fungus E. cristatum during SSF. In vitro spectrophotometric assays demonstrated that the total phenolics content, ferric reducing antioxidant power, reducing power, scavenging activities of DPPH radical and ABTS center dot+, and alpha-glucosidase inhibitory activity of buckwheat were considerably enhanced after processing by SSF with E. cristatum. Additionally, solvents with different polarities significantly influenced the antioxidant and alpha-glucosidase inhibitory activities of buckwheat extracts. Our study indicated that processing by SSF with E. cristatum can greatly improve the phytochemical components of buckwheat and consequently contribute to its antioxidant and alpha-glucosidase inhibitory activities. SSF with E. cristatum is an innovative method for enhancing the health-promoting components and bioactivities of buckwheat.

Recommanded Product: 103-26-4. About Methyl 3-phenyl-2-propenoate, If you have any questions, you can contact Xiao, Y; Wu, X; Yao, XS; Chen, YL; Ho, CT; He, C; Li, ZJ; Wang, YL 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

Formula: C13H8O2. Meyer, SM; Charlesworth-Seiler, EM; Patrow, JG; Kitzrow, JP; Gerlach, DL; Reinheimer, EW; Dahl, BJ in [Meyer, Samantha M.; Charlesworth-Seiler, Eva M.; Patrow, Joel G.; Kitzrow, Jonathan P.; Gerlach, Deidra L.; Dahl, Bart J.] Univ Wisconsin, Dept Chem, Eau Claire, WI 54702 USA; [Reinheimer, Eric W.] Rigaku Amer Corp, 9009 New Trails Dr, The Woodlands, TX 77381 USA published Synthesis and optical properties of a library of multi-colored isomeric aryldibenzopyrylium halochromic cations 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.

This report describes the synthesis of five new colorful 6-aryldibenzo[b,d]pyrylium cation salts, a largely unexplored structural unit. These rare compounds are benzannulated structural derivatives of the well-known flavylium cations found widespread in natural pigments. These new dyes are directly compared to three previously synthesized 6-aryldibenzo[b,d]pyrylium cation salts as well as eight colorful isomeric 9-aryldibenzo[b,d]pyrylium cation, or 9-arylxanthylium, salts. The 9-arylxanthylium unit is commonly found in the biologically important rhodamine and rosamine dyes, yet six of the analogs presented in this study were either previously unreported or not isolated. The visual and spectroscopic properties of all 16 compounds were analyzed as a function of the structural differences between the compounds. All compounds displayed reversible halochromism in organic solution, displaying bright colors under acidic conditions and becoming colorless under basic conditions. (C) 2020 Elsevier Ltd. All rights reserved.

Formula: C13H8O2. About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Meyer, SM; Charlesworth-Seiler, EM; Patrow, JG; Kitzrow, JP; Gerlach, DL; Reinheimer, EW; Dahl, 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

Formula: C10H10O2. Recently I am researching about ACUTE-CARE UTILIZATION; ALCOHOL-CONSUMPTION; RISK; IMPACT; INDIVIDUALS; QUESTIONNAIRE; DEPRESSION; MORTALITY; ADMISSION; INFECTION, Saw an article supported by the British HIV Association (BHIVA) research award; PhD fellowship from the Royal Free Charity; National Institute for Health Research (NIHR)National Institute for Health Research (NIHR) [RP-PG0608-10142]; NIHR through the Comprehensive Clinical Research Network. Published in ELSEVIER in AMSTERDAM ,Authors: Rein, SM; Smith, CJ; Chaloner, C; Stafford, A; Rodger, AJ; Johnson, MA; McDonnell, J; Burns, F; Madge, S; Miners, A; Sherr, L; Collins, S; Speakman, A; Phillips, AN; Lampe, FC. The CAS is 103-26-4. Through research, I have a further understanding and discovery of Methyl 3-phenyl-2-propenoate

Background: Predictors of hospitalisation in people with HIV (PLHIV) in the contemporary treatment era are not well understood. Methods: This ASTRA sub-study used clinic data linkage and record review to determine occurrence of hospitalisations among 798 PLHIV from baseline questionnaire (February to December 2011) until 1 June 2018. Associations of baseline social circumstance, socioeconomic, lifestyle, mental health, demographic and clinical factors with repeated all-cause hospitalisation from longitudinal data were investigated using Prentice-Williams-Peterson models. Associations were also assessed in 461 individuals on antiretroviral therapy (ART) with viral load <= 50 copies/ml and CD4 count >= 500 cells/ mu l. Findings: Rate of hospitalisation was 5.8/100 person-years (95% CI: 5.1-6.5). Adjusted for age, demographic group and time with diagnosed HIV, the following social circumstance, socioeconomic, lifestyle and mental health factors predicted hospitalisation: no stable partner (adjusted hazard ratio (aHR)=1.59; 95% CI=1.16-2.20 vs living with partner); having children (aHR=1.50; 1.08-2.10); non-employment (aHR=1.56; 1.07-2.27 for unemployment; aHR=2.39; 1.70-3.37 for sick/disabled vs employed); rented housing (aHR=1.72; 1.26-2.37 vs homeowner); not enough money for basic needs (aHR=1.82; 1.19-2.78 vs enough); current smoking (aHR=1.39; 1.02-1.91 vs never); recent injection-drug use (aHR=2.11; 1.30-3.43); anxiety symptoms (aHRs=1.39; 1.01-1.91, 2.06; 1.43-2.95 for mild and moderate vs none/minimal); depressive symptoms (aHRs=1.67; 1.17-2.38, 1.91; 1.30-2.78 for moderate and severe vs none/minimal); treated/untreated depression (aHRs=1.65; 1.03-2.64 for treated depression only, 1.87; 1.39-2.52 for depressive symptoms only; 1.53; 1.05-2.24; for treated depression and depressive symptoms, versus neither). Associations were broadly similar in those with controlled HIV and high CD4. Interpretation: Social circumstance, socioeconomic disadvantage, adverse lifestyle factors and poorer mental health are strong predictors of hospitalisation in PLHIV, highlighting the need for targeted interventions and care. (c) 2020 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

About Methyl 3-phenyl-2-propenoate, If you have any questions, you can contact Rein, SM; Smith, CJ; Chaloner, C; Stafford, A; Rodger, AJ; Johnson, MA; McDonnell, J; Burns, F; Madge, S; Miners, A; Sherr, L; Collins, S; Speakman, A; Phillips, AN; Lampe, FC or concate me.. Formula: C10H10O2

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