Month: October 2021

I found the field of Science & Technology – Other Topics very interesting. Saw the article Concise asymmetric synthesis of (-)-bilobalide published in 2019. Category: esters-buliding-blocks, Reprint Addresses Ohtawa, M; Shenvi, RA (corresponding author), Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USA.; Ohtawa, M (corresponding author), Kitasato Univ, Grad Sch Pharmaceut Sci, Tokyo, Japan.. The CAS is 89-91-8. Through research, I have a further understanding and discovery of Methyl 2,2-dimethoxyacetate

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.

Category: esters-buliding-blocks. 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

Recently I am researching about SUPRAMOLECULAR POLYMERS; AMPLIFICATION; POLYMERIZATION; BENZENE-1,3,5-TRICARBOXAMIDES; ARCHITECTURES; RULES; NANOPARTICLES; DERIVATIVES; STABILITY; PRINCIPLE, Saw an article supported by the China Scholarship Council (CSC)China Scholarship Council; Sao Paulo Research Foundation (FAPESP, Sao Paulo, Brazil)Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2014/04515-8]. Category: esters-buliding-blocks. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Li, Y; Dubreucq, L; Alvarenga, BG; Raynal, M; Bouteiller, L. The CAS is 99-27-4. Through research, I have a further understanding and discovery of Dimethyl 5-aminoisophthalate

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.

Category: esters-buliding-blocks. 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

An article Chemical characterization of four Brazilian brown propolis: An insight in tracking of its geographical location of production and quality control WOS:000477091700048 published article about BETA-CARYOPHYLLENE; ANTIOXIDANT ACTIVITY; ANTIMICROBIAL ACTIVITY; CYTOTOXIC ACTIVITIES; BIOACTIVE COMPOUNDS; RED PROPOLIS; BEE POLLEN; D-LIMONENE; FT-IR; ORIGIN in [Olegario, Lary Souza] Univ Fed Paraiba, Lab Flavor Anal, Joao Pessoa, Paraiba, Brazil; [Santana Andrade, Julianna Karla; Denadai, Marina; Cavalcanti, Ranielly Lira; Narain, Narendra] Univ Fed Sergipe, Lab Flavor & Chromatog Anal, Sao Cristovao, Sergipe, Brazil; [Santana Andrade, George Ricardo] Univ Fed Sergipe, Post Grad Program Mat Sci & Engn, Sao Cristovao, SE, Brazil; [Azevedo Pereira da Silva, Maria Aparecida] Univ Fed Sergipe, Dept Food Technol, Sao Cristovao, Sergipe, Brazil in 2019.0, Cited 53.0. The Name is Methyl 3-phenylpropionate. Through research, I have a further understanding and discovery of 103-25-3. Product Details of 103-25-3

The aim of this work was to undertake a detailed analysis on chemical constituents of brown propolis, originating from four different states (Bahia, Minas Gerais, Parana and Sergipe) of Brazil. The volatile profile was determined by using HS-SPME-GC-MS along with the determination of total phenolic compounds content, flavonoids and antioxidant activity. A total of 315 volatile compounds were identified, however, several of them have not been reported so far in the Brazilian brown propolis. The terpenes represented the major class with 40.92-84.66% of the total area in the chromatograms. PCA analysis of the majority of compounds successfully indicated the volatile profile of each propolis sample according to their geographical origin. The analysis of volatile compounds and its characterization also varied significantly and confirmed that these depended on the geographical area of collection of propolis. The data generated in this work may help in establishing criteria for quality control and tracking the specific region of propolis production in different states of Brazil.

Product Details of 103-25-3. About Methyl 3-phenylpropionate, If you have any questions, you can contact Olegario, LS; Andrade, JKS; Andrade, GRS; Denadai, M; Cavalcanti, RL; da Silva, MAAP; Narain, N or concate me.

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

Product Details of 103-25-3. Recently I am researching about CATALYZED CARBONYLATIVE SYNTHESIS; BENZYLIC AMINES; CROSS-COUPLINGS; ALKYL IODIDES; FUNCTIONALIZATION; TRANSFORMATIONS; HETEROCYCLES; RADICALS; ALCOHOLS, Saw an article supported by the Chinese Scholarship CouncilChina Scholarship Council. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Li, CL; Jiang, X; Lu, LQ; Xiao, WJ; Wu, XF. The CAS is 103-25-3. Through research, I have a further understanding and discovery of Methyl 3-phenylpropionate

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.

Product Details of 103-25-3. 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.

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

HPLC of Formula: C10H12O2. I found the field of Chemistry very interesting. Saw the article Ruthenium-catalyzed hydrogenation of CO(2)as a route to methyl esters for use as biofuels or fine chemicals published in 2020.0, Reprint Addresses Liu, QB (corresponding author), Hebei Normal Univ, Coll Chem & Mat Sci, Hebei Key Lab Organ Funct Mol, Shijiazhuang 050024, Hebei, Peoples R China.; Solan, GA; Sun, WH (corresponding author), Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China.; Solan, GA; Sun, WH (corresponding author), Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China.; Solan, GA (corresponding author), Univ Leicester, Dept Chem, Univ Rd, Leicester LE1 7RH, Leics, England.. The CAS is 103-25-3. Through research, I have a further understanding and discovery of Methyl 3-phenylpropionate.

A novel robust diphosphine-ruthenium(ii) complex has been developed that can efficiently catalyze both the hydrogenation of CO(2)to methanol and itsin situcondensation with carboxylic acids to form methyl esters; a TON of up to 3260 is achievable for the CO(2)to methanol step. Both aromatic and aliphatic carboxylic acids can be transformed to their corresponding methyl esters with high conversion and selectivity (17 aliphatic and 18 aromatic examples). On the basis of a series of experiments, a mechanism has been proposed to account for the various steps involved in the catalytic pathway. More importantly, this approach provides a promising route for using CO(2)as a C1 source for the production of biofuels, fine chemicals and methanol.

HPLC of Formula: C10H12O2. About Methyl 3-phenylpropionate, If you have any questions, you can contact Wang, Z; Zhao, ZW; Li, Y; Zhong, YX; Zhang, QY; Liu, QB; Solan, GA; Ma, YP; Sun, WH or concate me.

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

An article Mesityl or Imide Acridinium Photocatalysts: Accessible Versus Inaccessible Charge-Transfer States in Photoredox Catalysis WOS:000480594900003 published article about PHOTOINDUCED ELECTRON-TRANSFER; ANTI-MARKOVNIKOV ADDITION; 9-MESITYL-10-METHYLACRIDINIUM ION; VISIBLE-LIGHT; OXYGENATION; DERIVATIVES; ACR(+)-MES; COMPLEXES; EVOLUTION; OXIDATION in [Gini, Andrea; Rigotti, Thomas; Aleman, Jose] Univ Autonoma Madrid, Fac Ciencias, Organ Chem Dept, Modulo 1,Calle Francisco Tomcis y Valiente 7, E-28049 Madrid, Spain; [Perez-Ruiz, Raul; de la Pena O’Shea, Victor A.] IMDEA Energy, Photoactivated Proc Unit, Av Ramon de la Sagra 3, Madrid 28935, Spain; [Uygur, Mustafa; Mancheno, Olga Garcia] Univ Munster, Organ Chem Inst, Corrensstr 40, D-48149 Munster, Germany; [Mas-Balleste, Ruben] Univ Autonoma Madrid, Fac Ciencias, Inorgan Chem Dept, Modulo 7,Calle Francisco Tomcis y Valiente 7, E-28049 Madrid, Spain; [Mas-Balleste, Ruben; Corral, Ines; Aleman, Jose] Univ Autonoma Madrid, Fac Ciencias, Inst Adv Res Chem Sci IAdChem, Calle Francisco Tomcis y Valiente 7, E-28049 Madrid, Spain; [Corral, Ines; Martinez-Fernandez, Lara] Univ Autonoma Madrid, Fac Ciencias, Condensed Matter Phys Ctr IFIMAC, Calle Francisco Tomcis y Valiente 7, E-28049 Madrid, Spain; [Corral, Ines] Univ Autonoma Madrid, Fac Ciencias, Chem Dept, Modulo 13,Calle Francisco Tomcis y Valiente 7, E-28049 Madrid, Spain in 2019.0, Cited 47.0. Recommanded Product: 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

A study on C9-imide acridinium photocatalysts with enhanced photoredox catalytic activity with respect to the well-established C9-mesityl acridinium salt is presented. The differences observed rely on the diverse accessibility of singlet charge-transfer excited states, which have been proven by CASPT2/CASSCF calculations, fluorescence and quenching studies.

Recommanded Product: 6H-Benzo[c]chromen-6-one. About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Gini, A; Rigotti, T; Perez-Ruiz, R; Uygur, M; Mas-Balleste, R; Corral, I; Martinez-Fernandez, L; O’Shea, VAD; Mancheno, OG; Aleman, J 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 VOLATILE COMPOUNDS; CABERNET-SAUVIGNON; YOUNG WINES; QUANTITATIVE-ANALYSIS; IMPACT ODORANTS; AROMA; COMPONENTS; QUANTIFICATION; IDENTIFICATION; EXTRACTION, Saw an article supported by the . Published in SPRINGER INDIA in NEW DELHI ,Authors: Somkuwar, RG; Sharma, AK; Kambale, N; Banerjee, K; Bhange, MA; Oulkar, DP. The CAS is 89-91-8. Through research, I have a further understanding and discovery of Methyl 2,2-dimethoxyacetate. Product Details of 89-91-8

The current study evaluated the key characters of aroma composition in diversified red wines (Cinsaut, Grenache, Cabernet Franc, Petit Verdot, Cabernet Sauvignon, Nielluccio, Tempranillo, Syrah, Merlot and Caladoc). Out of hundreds of volatile compounds 64 compounds were considered for study. Different groups consisting of fatty acids, volatile alcohols, aldehydes, esters, volatile phenols and terpenes were analysed using gas chromatography mass spectrometry coupled with thermal desorption (TD-GC-MS). Among all these diversified classes, alcohols were found as the most dominant group followed by esters and acids whereas aldehydes, phenols and terpenes were found to be minor compounds. Among the varieties, Nielluccio wine recorded highest concentration of total volatile compounds (191.53 mg/L) while, it was least in Caladoc wines (15.45 mg/L). The principal component analysis clearly differentiated Grenache wines based on their relationships between scores and their aroma composition followed by Nielluccio and Cinsuat wines. Out of sixty four compounds, only six aromatic compounds viz. butanediol, isoamyl actate, gamma-Terpene, butanol, acetic acid and furfural have satisfying aroma descriptors with floral and fruity nuances and contribute to differentiate the Grenache wines from other varieties which have similar scores in PC1 analysis. The cluster analysis also suggested that the wines in the same group (Cinsaut, Tempranillo and Syrah), (Cabernet Franc, Cabernet Sauvignon, Caladoc and Merlot) and (Nielluccio and Petit Verdot) had similar aroma characterization. Grenache wines were well differentiated from the sub group formed by other red varieties.

Product Details of 89-91-8. About Methyl 2,2-dimethoxyacetate, If you have any questions, you can contact Somkuwar, RG; Sharma, AK; Kambale, N; Banerjee, K; Bhange, MA; Oulkar, DP or concate me.

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

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. Safety of Methyl 3-phenylpropionate

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.

Safety of Methyl 3-phenylpropionate. 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

Recommanded Product: 2005-10-9. Recently I am researching about ELECTRON-TRANSFER PROCESS; Z ISOMERIZATION; PHOTOOXIDATIVE DECARBOXYLATION; PHOTOCATALYTIC E; PI INTERACTIONS; ACTIVATION; OXIDATION; CLEAVAGE, Saw an article supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)German Research Foundation (DFG) [401007518]; European UnionEuropean Commission [ESF/14-BM-A55-0049/16]. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Hauptmann, R; Petrosyan, A; Fennel, F; Cordero, MAA; Surkus, AE; Pospech, J. The CAS is 2005-10-9. Through research, I have a further understanding and discovery of 6H-Benzo[c]chromen-6-one

Herein we report the photo- and electrochemical characterization of pyrimidopteridine N-oxide-based heterocycles. The potential of their application as organic photoredox catalysts is showcased in the photomediated contra-thermodynamic E -> Z isomerization of cinnamic acid derivatives and oxidative cyclization of 2-phenyl benzoic acid to benzocoumarin using molecular oxygen as a mild oxidant. Furthermore, unprecedented intermolecular non-covalent n-pi-hole interactions in solid state are discussed based on crystallographic and theoretical data.

About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Hauptmann, R; Petrosyan, A; Fennel, F; Cordero, MAA; Surkus, AE; Pospech, J or concate me.. Recommanded Product: 2005-10-9

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

Tanemura, K; Rohand, T in [Tanemura, Kiyoshi] Nippon Dent Univ, Sch Life Dent Niigata, Chem Lab, Hamaura Cho, Niigata 9518580, Japan; [Rohand, Taoufik] Univ Cadi Ayyad, Fac Polydisciplinaire Safi, Dept Chem, Lab Analyt & Mol Chem, Sidi Bouzid 46000, Sidi Bouzid, Morocco published Activated charcoal as an effective additive for alkaline and acidic hydrolysis of esters in water in 2020, Cited 26. Recommanded Product: 103-26-4. The Name is Methyl 3-phenyl-2-propenoate. Through research, I have a further understanding and discovery of 103-26-4.

Activated charcoal largely enhanced the rates of the alkaline hydrolysis of methyl, ethyl, and n-propyl esters in aqueous 1.5 M NaOH solution to give the corresponding carboxylic acids in excellent yields. The acidic hydrolysis of methyl, ethyl, and n-propyl esters in aqueous 3 M H2SO4 solution was accelerated by the addition of activated charcoal to afford the corresponding carboxylic acids in good yields. (C) 2020 Elsevier Ltd. All rights reserved.

Recommanded Product: 103-26-4. About Methyl 3-phenyl-2-propenoate, If you have any questions, you can contact Tanemura, K; Rohand, T 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