Tag: 100-200

《Fe-Catalyzed Dicarbofunctionalization of Vinylarenes with Alkylsilyl Peroxides and β-Keto Carbonyl Substrates》 was written by Xu, Weiping; Kato, Terumasa; Liu, Yan; Matsumoto, Akira; Maruoka, Keiji. Electric Literature of C6H10O3 And the article was included in Organic Letters on April 15 ,2022. The article conveys some information:

The formation of two carbon-carbon bonds using vinylarenes with alkylsilyl peroxides and β-keto carbonyl substrates is effected in the presence of catalytic Fe(OTf)2 under mild reaction conditions. A variety of vinylarenes with different substituents can be utilized in combination with several different alkylsilyl peroxides and β-keto carbonyl substrates. The experimental process involved the reaction of Methyl 3-oxovalerate(cas: 30414-53-0Electric Literature of C6H10O3)

Methyl 3-oxovalerate(cas: 30414-53-0) belongs to ketone compounds. They are most widely used as solvents, especially in industries manufacturing explosives, lacquers, paints, and textiles. Ketones are also used in tanning, as preservatives, and in hydraulic fluids.Electric Literature of C6H10O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Changes of volatile compounds and odor profiles in Wuyi rock tea during processing》 was written by Guo, Xiangyang; Ho, Chi-Tang; Wan, Xiaochun; Zhu, Hui; Liu, Qiong; Wen, Zhen. SDS of cas: 119-36-8This research focused onWuyi rock tea Odor profile favor Odor activity value; Sensory evaluation Tea processing; Odor activity value (OAV); Odor profile; Rock flavor; Sensory evaluation; Tea processing; Wuyi rock tea. The article conveys some information:

Wuyi rock tea (WRT), is one kind of oolong tea and widely appreciated for its typical ′rock flavor′. The odor characteristics of WRT during processing were comprehensive investigated by gas chromatog.-mass spectrometry, sensory evaluation and odor activity value (OAV). Alcs., alkenes and esters were the main volatiles formed during tea processes, but the WRT contained more heterocyclic compounds, among which 15 N-containing volatiles were newly identified in this study, accounting for 60.52% of total amounts of volatiles in WRT. In response, the original green and chem. odors converted to roasted and woody odors, and full fire processing was effective to enhance roasted, floral and woody odors, weaken chem. odor. 2-Ethyl-3,5-dimethylpyrazine (OAV 4.71) was confirmed as the aroma-active compound of WRT with roasted odor by aroma recombination experiment In addition, strong roasted, floral and moderate woody odors were perceived as the outline of ′rock flavor′ in WRT aroma. These results provide theor. basis for processing and quality control of WRT.Methyl Salicylate(cas: 119-36-8SDS of cas: 119-36-8) was used in this study.

Methyl Salicylate(cas: 119-36-8) is a natural herbivore-induced plant volatile. It is a naturally occurring product in trees, legumes, exotic plants, vegetables, berries, and the primary constituent of the oil of wintergreen.Methyl Salicylate is produced from salicylic acid.SDS of cas: 119-36-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Electric Literature of C8H8O3In 2020 ,《Safety assessment of process technoplastika prima perdana, based on starlinger deCON technology, used to recycle post-consumer PET into food contact materials》 was published in EFSA Journal. The article was written by Silano, Vittorio; Barat Baviera, Jose Manuel; Bolognesi, Claudia; Chesson, Andrew; Cocconcelli, Pier Sandro; Crebelli, Riccardo; Gott, David Michael; Grob, Konrad; Lambre, Claude; Mengelers, Marcel; Mortensen, Alicja; Riviere, Gilles; Steffensen, Inger-Lise; Tlustos, Christina; Van Loveren, Henk; Vernis, Laurence; Zorn, Holger; Dudler, Vincent; Milana, Maria Rosaria; Papaspyrides, Constantine; Tavares Pocas, Maria de Fatima; Lioupis, Alexandros; Lampi, Evgenia. The article contains the following contents:

The EFSA Panel on Food Contact Materials, Enzymes and Processing Aids (CEP) assessed the safety of the recycling process Technoplastika Prima Perdana (EU register number RECYC185), which uses the Starlinger deCON technol. The input material is hot washed and dried poly(ethylene terephthalate) (PET) flakes originating from collected post-consumer PET containers, e.g. bottles, including no more than 5% PET from non-food consumer applications. The flakes are preheated before being submitted to solid-state polycondensation (SSP) in a continuous reactor at high temperature under vacuum and gas flow. Having examined the challenge test provided, the Panel concluded that the preheating (step 2) and the decontamination in the continuous SSP reactor (step 3) are critical in determining the decontamination efficiency of the process. The operating parameters to control the performance of these critical steps are temperature, pressure, residence time and gas flow rate. It was demonstrated that this recycling process is able to ensure a level of migration of potential unknown contaminants into food below the conservatively modelled migration of 0.1μg/kg food. Therefore, the Panel concluded that the recycled PET obtained from this process is not considered to be of safety concern, when used at up to 100% for the manufacture of materials and articles for contact with all types of foodstuffs for long-term storage at room temperature, with or without hot-fill. Trays made of this recycled PET are not intended to be used in microwave and conventional ovens and such uses are not covered by this evaluation. The experimental part of the paper was very detailed, including the reaction process of Methyl Salicylate(cas: 119-36-8Electric Literature of C8H8O3)

Methyl Salicylate(cas: 119-36-8) is a natural herbivore-induced plant volatile. It is a naturally occurring product in trees, legumes, exotic plants, vegetables, berries, and the primary constituent of the oil of wintergreen.Methyl Salicylate is produced from salicylic acid.Electric Literature of C8H8O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Quality Control of Methyl 4-fluoro-3-nitrobenzoateIn 2020 ,《Discovery of triazoloquinoxaline as novel STING agonists via structure-based virtual screening》 was published in Bioorganic Chemistry. The article was written by Hou, Hui; Yang, Ruirui; Liu, Xiaohong; Wu, Xiaolong; Zhang, Sulin; Chen, Kaixian; Zheng, Mingyue. The article contains the following contents:

Stimulator of interferon genes (STING) is an endoplasmic reticulum adaptor facilitating innate immune signaling. Activation of STING leads to expression of interferons (IFNs) and pro-inflammatory cytokines which is associated with antiviral and antitumor responses. It is imperative to discovery potent compounds that precisely modulate STING. Herein, we describe the discovery of triazoloquinoxaline 1a(I) as a novel STING agonist via Structure-based Virtual Screening. Specifically, biochem. and cell-based assays suggested that 1a stimulated concentration-dependently mRNA expression of IFNβ, CXCL-10 and IL-6. Furthermore, 1a significantly induced phosphorylation of STING, TANK-binding kinases 1 (TBK1) and interferon regulatory factor 3 (IRF3), suggesting the activation of STING and its downstream TBK1-IRF3 signaling axis. In addition, 1a activated secretion of secreted alk. phosphatase (SEAP) in dose-dependent manner and EC50 was 16.77 ± 3.814μM, which is comparable with EC50 of 2’3′-cGAMP (9.212 ± 2.229μM). These studies revealed that 1a is a promising STING agonist possessing the potential to be further developed for antiviral and antitumor treatment. In the experimental materials used by the author, we found Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Quality Control of Methyl 4-fluoro-3-nitrobenzoate)

Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9) belongs to methyl benzoate. Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid to give methyl 3-nitrobenzoate.Quality Control of Methyl 4-fluoro-3-nitrobenzoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Name: Methyl 4-fluoro-3-nitrobenzoateIn 2020 ,《Agonist of RORA Attenuates Nonalcoholic Fatty Liver Progression in Mice via Up-regulation of MicroRNA 122》 was published in Gastroenterology. The article was written by Chai, Chofit; Cox, Bryan; Yaish, Dayana; Gross, Devora; Rosenberg, Nofar; Amblard, Franck; Shemuelian, Zohar; Gefen, Maytal; Korach, Amit; Tirosh, Oren; Lanton, Tali; Link, Henrike; Tam, Joseph; Permyakova, Anna; Ozhan, Gunes; Citrin, Jonathan; Liao, Haixing; Tannous, Mirna; Hahn, Michal; Axelrod, Jonathan; Arretxe, Enara; Alonso, Cristina; Martinez-Arranz, Ibon; Betes, Pablo Ortiz; Safadi, Rifaat; Salhab, Ahmad; Amer, Johnny; Tber, Zahira; Mengshetti, Seema; Giladi, Hilla; Schinazi, Raymond F.; Galun, Eithan. The article contains the following contents:

Development of nonalcoholic steatohepatitis (NASH) is associated with reductions in hepatic microRNA122 (MIR122); the RAR related orphan receptor A (RORA) promotes expression of MIR122. Increasing expression of RORA in livers of mice increases expression of MIR122 and reduces lipotoxicity. We investigated the effects of a RORA agonist in mouse models of NASH. We screened a chem. library to identify agonists of RORA and tested their effects on a human hepatocellular carcinoma cell line (Huh7). C57BL/6 mice were fed a chow or high-fat diet (HFD) for 4 wk to induce fatty liver. Mice were given hydrodynamic tail vein injections of a MIR122 antagonist (antagomiR-122) or a control antagomiR once each week for 3 wk while still on the HFD or chow diet, or i.p. injections of the RORA agonist RS-2982 or vehicle, twice each week for 3 wk. Livers, gonad white adipose, and skeletal muscle were collected and analyzed by reverse-transcription polymerase chain reaction, histol., and immunohistochem. A sep. group of mice were fed an atherogenic diet, with or without injections of RS-2982 for 3 wk; livers were analyzed by immunohistochem., and plasma was analyzed for levels of aminotransferases. We analyzed data from liver tissues from patients with NASH included in the RNA-sequencing databases GSE33814 and GSE89632. Injection of mice with antagomiR-122 significantly reduced levels of MIR122 in plasma, liver, and white adipose tissue; in mice on an HFD, antagomiR-122 injections increased fat droplets and total triglyceride content in liver and reduced β-oxidation and energy expenditure, resulting in significantly more weight gain than in mice given the control microRNA. We identified RS-2982 as an agonist of RORA and found it to increase expression of MIR122 promoter activity in Huh7 cells. In mice fed an HFD or atherogenic diet, injections of RS-2982 increased hepatic levels of MIR122 precursors and reduced hepatic synthesis of triglycerides by reducing expression of biosynthesis enzymes. In these mice, RS-2982 significantly reduced hepatic lipotoxicity, reduced liver fibrosis, increased insulin resistance, and reduced body weight compared with mice injected with vehicle. Patients who underwent cardiovascular surgery had increased levels of plasma MIR122 compared to its levels before surgery; increased expression of plasma MIR122 was associated with increased levels of plasma free fatty acids and levels of RORA. We identified the compound RS-2982 as an agonist of RORA that increases expression of MIR122 in cell lines and livers of mice. Mice fed an HFD or atherogenic diet given injections of RS-2982 had reduced hepatic lipotoxicity, liver fibrosis, and body weight compared with mice given the vehicle. Agonists of RORA might be developed for treatment of NASH. After reading the article, we found that the author used Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Name: Methyl 4-fluoro-3-nitrobenzoate)

Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9) belongs to methyl benzoate. Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid to give methyl 3-nitrobenzoate.Name: Methyl 4-fluoro-3-nitrobenzoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

COA of Formula: C8H7FO2In 2021 ,《Efficient synthesis of primary and secondary amides via reacting esters with alkali metal amidoboranes》 appeared in Nature Communications. The author of the article were Guo, Yu; Wang, Ruo-Ya; Kang, Jia-Xin; Ma, Yan-Na; Xu, Cong-Qiao; Li, Jun; Chen, Xuenian. The article conveys some information:

Authors report here a facile synthesis method of primary and secondary amides through a direct amidation of esters with sodium amidoboranes (NaNHRBH3, R = H, Me), at room temperature without using catalysts and other reagents. This process is rapid and chemoselective, and features quant. conversion and wide applicability for esters tolerating different functional groups. The exptl. and theor. studies reveal a reaction mechanism with nucleophilic addition followed by a swift proton transfer-induced elimination reaction. In the experiment, the researchers used many compounds, for example, Methyl 4-fluorobenzoate(cas: 403-33-8COA of Formula: C8H7FO2)

Methyl 4-fluorobenzoate(cas: 403-33-8) can be used in the synthesis of trisubstituted imidazole derivatives containing a 4-fluorophenyl group, a pyrimidine ring, and a CN- or CONH2-substituted benzyl moiety.COA of Formula: C8H7FO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fantinel, Mariane; Valiati, Nayara; Moro, Pedro A. M.; Sa, Marcus M. published their research in Tetrahedron in 2021. The article was titled 《Amino-modified Merrifield resins as recyclable catalysts for the safe and sustainable preparation of functionalized α-diazo carbonyl compounds》.Quality Control of Ethyl 3-oxopentanoate The article contains the following contents:

Amino-functionalized polystyrene polymers derived from Merrifield resins were prepared and characterized. These basic materials were successfully employed as heterogeneous catalysts in the diazo transfer reaction to 1,3-dicarbonyl compounds R1C(O)CH2C(O)R2 [R1 = R2 = Me, Ph, MeO; R1 = Me, R2 = Ph; R1 = Me, Et, ClCH2, Ph, etc., R2 = EtO; R1R2 = (CH2)3, OCMe2O, etc.] furnishing the corresponding diazo compounds R1C(O)C(:N2)C(O)R2 in good to excellent yields and in relatively short reaction times. In addition, the work-up and purification protocols are simple and do not generate large amounts of waste, which are important features in sustainable catalysis and environmentally benign processes. The feasibility of the recovery and reuse of the amino-modified catalysts were also verified, since they can be employed up to five times without appreciable loss of catalytic activity. This straightforward procedure can be readily scaled up to gram scale, enabling the wide application of this method. The synthetic potential was demonstrated through the two-step preparation of 2-amino-N-dodecylacetamide (ANDA), a small mol. of com. relevance. After reading the article, we found that the author used Ethyl 3-oxopentanoate(cas: 4949-44-4Quality Control of Ethyl 3-oxopentanoate)

Ethyl 3-oxopentanoate(cas: 4949-44-4) belongs to ketone compounds. Ketones are highly reactive, although less so than aldehydes, to which they are closely related. Much of their chemical activity results from the nature of the carbonyl group. Ketones readily undergo a wide variety of chemical reactions.Quality Control of Ethyl 3-oxopentanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Jingjing; Jiang, Feng; Tao, Chaofu; Yu, Han; Ruhlmann, Laurent; Wei, Yongge published their research in Green Chemistry in 2021. The article was titled 《Oxidative esterification of alcohols by a single-side organically decorated Anderson-type chrome-based catalyst》.Synthetic Route of C8H7FO2 The article contains the following contents:

The direct esterification of alcs. with non-noble metal-based catalytic systems faces great challenges. Here, we report a new chrome-based catalyst stabilized by a single pentaerythritol decorated Anderson-type polyoxometalate, [N(C4H9)4]3[CrMo6O18(OH)3C{(OCH2)3CH2OH}], which can realize the efficient transformation from alcs. to esters by H2O2 oxidation in good yields and high selectivity without extra organic ligands. A variety of alcs. with different functionalities including some natural products and pharmaceutical intermediates are tolerated in this system. The chrome-based catalyst can be recycled several times and still keep the original configuration and catalytic activity. We also propose a reasonable catalytic mechanism and prove the potential for industrial applications. The results came from multiple reactions, including the reaction of Methyl 4-fluorobenzoate(cas: 403-33-8Synthetic Route of C8H7FO2)

Methyl 4-fluorobenzoate(cas: 403-33-8) is an organic fluorinated building block used for the synthesis of various pharmaceutical compounds. It can be used for the preparation of Blonanserin.Synthetic Route of C8H7FO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Direct Catalytic Asymmetric Synthesis of Oxindole-Derived δ-Hydroxy-β-ketoesters by Aldol Reactions》 was written by Zhang, Dongxin; Chen, Yan; Cai, Hu; Yin, Lei; Zhong, Junchao; Man, Jingjing; Zhang, Qian-Feng; Bethi, Venkati; Tanaka, Fujie. HPLC of Formula: 609-14-3 And the article was included in Organic Letters in 2020. The article conveys some information:

Direct asym. synthesis of δ-hydroxy-β-ketoesters was accomplished via regio- and enantioselective aldol reactions of β-ketoesters with isatins catalyzed by cinchona alkaloid thiourea derivatives The C-C bond formation of the reactions occurred only at the γ-position of the β-ketoesters. Reaction progress monitoring and product stability analyses under the conditions that included the catalyst indicated that the γ-position reaction products were formed kinetically. Various δ-hydroxy-β-ketoesters bearing 3-alkyl-3-hydroxyoxindole cores relevant to the development of bioactive mols. were synthesized. In the experimental materials used by the author, we found Ethyl 2-methyl-3-oxobutanoate(cas: 609-14-3HPLC of Formula: 609-14-3)

Ethyl 2-methyl-3-oxobutanoate(cas: 609-14-3) belongs to ketone compounds. They are most widely used as solvents, especially in industries manufacturing explosives, lacquers, paints, and textiles. Ketones are also used in tanning, as preservatives, and in hydraulic fluids.HPLC of Formula: 609-14-3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《A multifunctional fluorescent probe for highly selective detection of hydrazine and discovering the interplay between AIE and ICT》 was written by Zhu, Ji-hua; Zhang, Hao; Liao, Yuan; Liu, Jing-jiang; Quan, Zheng-jun; Wang, Xi-cun. Computed Properties of C7H12O3 And the article was included in Dyes and Pigments in 2020. The article conveys some information:

A multifunctional luminescent material (BC-B)(I) was synthesized, which exhibits aggregation-induced emission (AIE) enhancement property in high water fraction. The AIE shows a significant impact on the intramol. charge transfer (ICT) process by controlling intramol. motion. The above result is demonstrated by d. functional theory (DFT) calculations and single-crystal X-ray diffraction. To decrease the influence of AIE on ICT, the probe BC-B is exploited as turn-on fluorescent probe for hydrazine (N2H4) in DMSO/PBS buffer (6/4, volume/volume) and displays high sensitivity and selectivity. Besides, the fluorescence emission shows a good linear response (R2 = 0.9960) in the range of 0-35μM with the low detection limit of 1.29 ppb, which is significantly below the acceptable limit for hydrazine (10 ppb) set by the USEPA. After reading the article, we found that the author used Ethyl 3-oxopentanoate(cas: 4949-44-4Computed Properties of C7H12O3)

Ethyl 3-oxopentanoate(cas: 4949-44-4) belongs to ketone compounds. They are most widely used as solvents, especially in industries manufacturing explosives, lacquers, paints, and textiles. Ketones are also used in tanning, as preservatives, and in hydraulic fluids.Computed Properties of C7H12O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics