Month: October 2022

In 2011,Guo, Zhenmei; Wang, Hengsheng; Lv, Zhiguo; Wang, Zhihui; Nie, Tao; Zhang, Weiwei published 《Catalytic performance of [Bmim][Co(CO)4] functional ionic liquids for preparation of 1,3-propanediol by coupling of hydroesterification-hydrogenation from ethylene oxide》.Journal of Organometallic Chemistry published the findings.Computed Properties of C4H8O3 The information in the text is summarized as follows:

In this paper, synthesis of 1,3-propanediol (1,3-PDO) through coupling of hydroesterification-hydrogenation from ethylene oxide (EO) catalyzed by 1-butyl-3-methylimidazolium cobalt tetracarbonyl [Bmim][Co(CO)4] functional ionic liquid which was prepared by metathesis reaction between [Bmim]Cl and KCo(CO)4 has been studied. The structure of [Bmim][Co(CO)4] was characterized by FT-IR and 1H NMR. Using [Bmim][Co(CO)4] as catalyst and [Bmim]PF6 as solvent, 1,3-PDO was prepared for the first time by coupling of hydroesterifaction of EO and hydrogenation of Me 3-hydroxypropionate (3-HPM). The yield of 3-HPM can reach 90.8%, while the yield of 1,3-PDO up to 82.9%. The catalyst can be separated from the product mixture by extraction with deionized water and recycled several times without significant loss of catalytic efficiency. A possible reaction mechanism has also been proposed. The results came from multiple reactions, including the reaction of Methyl 3-hydroxypropanoate(cas: 6149-41-3Computed Properties of C4H8O3)

Methyl 3-hydroxypropanoate(cas: 6149-41-3) belongs to esters with low molecular weight are commonly used as fragrances and found in essential oils and pheromones. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Computed Properties of C4H8O3

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

In 2014,Nimczick, Martin; Pemp, Daniela; Darras, Fouad H.; Chen, Xinyu; Heilmann, Joerg; Decker, Michael published 《Synthesis and biological evaluation of bivalent cannabinoid receptor ligands based on hCB2R selective benzimidazoles reveal unexpected intrinsic properties》.Bioorganic & Medicinal Chemistry published the findings.Safety of Methyl 4-fluoro-3-nitrobenzoate The information in the text is summarized as follows:

The design of bivalent ligands targeting G protein-coupled receptors (GPCRs) often leads to the development of new, highly selective and potent compounds To date, no bivalent ligands for the human cannabinoid receptor type 2 (hCB2R) of the endocannabinoid system (ECS) are described. Therefore, two sets of homobivalent ligands containing as parent structure the hCB2R selective agonist I and coupled at different attachment positions were synthesized. Changes of the parent structure at these positions have a crucial effect on the potency and efficacy of the ligands. However, the authors discovered that bivalency has an influence on the effect at both cannabinoid receptors. Moreover, the authors found out that the spacer length and the attachment position altered the efficacy of the bivalent ligands at the receptors by turning agonists into antagonists and inverse agonists. In the experiment, the researchers used many compounds, for example, Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Safety 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.Safety of Methyl 4-fluoro-3-nitrobenzoateMethyl 4-fluoro-3-nitrobenzoate is used to prepare dimethyl 3-nitro-3′,4-oxydibenzoate by reacting with 3-hydroxy-benzoic acid methyl ester.

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

In 2016,Shintre, Suhas A.; Ramjugernath, Deresh; Singh, Parvesh; Koorbanally, Neil A. published 《Synthesis and structure elucidation using 2D NMR and thermal coefficient investigation on amino acid tethered quinoxalines》.Magnetic Resonance in Chemistry published the findings.Quality Control of Methyl 4-fluoro-3-nitrobenzoate The information in the text is summarized as follows:

A series of aminoacid tethered quinoxalines, e. g., I, were prepared and characterized. Extensive 2D NMR studies, X-ray crystallog. and thermal coefficient investigations were used to provide a full structural elucidation of these aminoacid tethered quinoxalines. Addnl.,the d. functional theory (DFT) and mol. dynamic (MD)simulations were employed to explain the hydrogen bondingtendency and conformational flexibility of these compounds In the experiment, the researchers used many compounds, for example, 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-nitrobenzoateMethyl 4-fluoro-3-nitrobenzoate is used to prepare dimethyl 3-nitro-3′,4-oxydibenzoate by reacting with 3-hydroxy-benzoic acid methyl ester.

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

In 2016,Rosi, Luca; Frediani, Marco; Frediani, Piero; Bartoli, Mattia published 《a simple protocol for quantitative analysis of bio-oils through gas-chromatography/mass spectrometry》.European Journal of Mass Spectrometry published the findings.Related Products of 6149-41-3 The information in the text is summarized as follows:

A new and simple protocol for quant. anal. of bio-oils using gas-chromatog./mass spectrometry is suggested. Compounds were identified via their mass spectra, and then unavailable response factors were calculated with respect to di-Ph as the internal standard using a modified method previously suggested for gas chromatog. with flame ionization detection. This new protocol was applied to the characterization of bio-oils obtained from the pyrolysis of woods of different sources or using different pyrolysis procedures. This protocol allowed evaluation of the yields of products from poplar pyrolysis (among 50% and 99%), while a reduced amounts of products were identified from the pyrolysis of cellulose (between 46% and 58%). The main product was always acetic acid, but it was formed in very large yields from poplar while lower yields were obtained from cellulose. The experimental part of the paper was very detailed, including the reaction process of Methyl 3-hydroxypropanoate(cas: 6149-41-3Related Products of 6149-41-3)

Methyl 3-hydroxypropanoate(cas: 6149-41-3) belongs to esters with low molecular weight are commonly used as fragrances and found in essential oils and pheromones. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Related Products of 6149-41-3

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

In 2017,Follmann, Markus; Ackerstaff, Jens; Redlich, Gorden; Wunder, Frank; Lang, Dieter; Kern, Armin; Fey, Peter; Griebenow, Nils; Kroh, Walter; Becker-Pelster, Eva-Maria; Kretschmer, Axel; Geiss, Volker; Li, Volkhart; Straub, Alexander; Mittendorf, Joachim; Jautelat, Rolf; Schirok, Hartmut; Schlemmer, Karl-Heinz; Lustig, Klemens; Gerisch, Michael; Knorr, Andreas; Tinel, Hanna; Mondritzki, Thomas; Truebel, Hubert; Sandner, Peter; Stasch, Johannes-Peter published 《Discovery of the Soluble Guanylate Cyclase Stimulator Vericiguat (BAY 1021189) for the Treatment of Chronic Heart Failure》.Journal of Medicinal Chemistry published the findings.Application of 16982-21-1 The information in the text is summarized as follows:

The first-in-class soluble guanylate cyclase (sGC) stimulator riociguat was recently introduced as a novel treatment option for pulmonary hypertension. Despite its outstanding pharmacol. profile, application of riociguat in other cardiovascular indications is limited by its short half-life, necessitating a three times daily dosing regimen. In our efforts to further optimize the compound class, we have uncovered interesting structure-activity relationships and were able to decrease oxidative metabolism significantly. These studies resulting in the discovery of once daily sGC stimulator vericiguat (compound 24, BAY 1021189), currently in phase 3 trials for chronic heart failure, are now reported. In the experimental materials used by the author, we found Ethyl 2-amino-2-thioxoacetate(cas: 16982-21-1Application of 16982-21-1)

Ethyl 2-amino-2-thioxoacetate(cas: 16982-21-1) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.Application of 16982-21-1

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

The author of 《Ethynylbenziodazolones (EBZ) as Electrophilic Alkynylation Reagents for the Highly Enantioselective Copper-Catalyzed Oxyalkynylation of Diazo Compounds》 were Hari, Durga Prasad; Schouwey, Lionel; Barber, Verity; Scopelliti, Rosario; Fadaei-Tirani, Farzaneh; Waser, Jerome. And the article was published in Chemistry – A European Journal in 2019. Computed Properties of C8H14O4 The author mentioned the following in the article:

The first synthesis was reported for the corresponding ethynylbenziodazolone (EBZ) reagents, in which the oxygen atom in the iodoheterocycle was replaced by a nitrogen atom. The substituent on the nitrogen enabled further fine-tuning of the reagent structure and reactivity. EBZ reagents were obtained easily from the corresponding benzamides by using a one-step procedure and displayed reactivity comparable to that of EBX reagents. In particular, they were applied in an asym. copper-catalyzed oxyalkynylation of diazo compounds, which proceeded in high yield and enantioselectivity for a broad range of substituents on the diazo compounds and the alkyne.Diethyl 2-methylmalonate(cas: 609-08-5Computed Properties of C8H14O4) was used in this study.

Diethyl 2-methylmalonate(cas: 609-08-5) belongs to aliphatic hydrocarbons. Aliphatic hydrocarbons belong to the most abundant fraction in crude oil. Aliphatics molecules are linear or branched open-chain structures such as n-alkanes, isoalkanes, cycloalkanes (naphthenes), terpenes and steranes.Computed Properties of C8H14O4

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

The author of 《Design, synthesis, and biological evaluation of novel 4-phenoxypyridine derivatives as potential antitumor agents》 were Liu, Ju; Liu, Yutong; Hao, Xuechen; Wang, Yang; Ji, Jingchao; Liu, Yajing; Ding, Shi; Chen, Ye. And the article was published in Archiv der Pharmazie (Weinheim, Germany) in 2019. Synthetic Route of C7H12O3 The author mentioned the following in the article:

A series of novel 4-phenoxypyridine derivatives containing the 4-oxo-1,4-dihydropyridazine-3-carboxamide moiety were synthesized and evaluated for their in vitro cytotoxic activity against the A549 cancer cell line, and some compounds were further examined for their cytotoxic activity against the H460, BGC823, MKN45, and HT-29 cancer cell lines. Most of the compounds exhibited moderate to significant cytotoxicity. The most promising compound 15b (with VEGFR2 inhibitory concentration [IC50] value of 0.23 μM) showed remarkable cytotoxicity against A549, BGC-823, MKN45, H460, and HT-29 cells, with IC50 values of 0.75, 1.68, 2.63, 5.08 and 7.22 μM, resp. Their preliminary structure-activity relationship studies indicate that electron-withdrawing groups on the terminal Ph rings are beneficial for improving the antitumor activity. Moreover, treatment of A549 cells with compound 15b resulted in cell cycle arrest in the G0/G1 phase in a dose-dependent manner. Further apoptotic studies and acridine orange/ethidium bromide staining were also performed on A549 cells, which showed that compound 15b could induce apoptosis. Wound-healing assay results indicated that compound 15b strongly inhibited A549 cell motility. In addition to this study using Ethyl 3-oxopentanoate, there are many other studies that have used Ethyl 3-oxopentanoate(cas: 4949-44-4Synthetic Route of C7H12O3) was used in this study.

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.Synthetic Route of C7H12O3

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

《Comparing characteristic aroma components of bead-shaped green teas from different regions using headspace solid-phase microextraction and gas chromatography-mass spectrometry/olfactometry combined with chemometrics》 was published in European Food Research and Technology in 2020. These research results belong to Liu, Panpan; Zheng, Pengcheng; Gong, Ziming; Feng, Lin; Gao, Shiwei; Wang, Xueping; Teng, Jing; Zheng, Lin; Liu, Zhonghua. COA of Formula: C8H8O3 The article mentions the following:

Abstract: In this study, the aroma components of bead-shaped green teas were compared through headspace solid-phase microextraction (HS-SPME) and gas chromatog.-mass spectrometry/olfactometry (GC-MS/O) coupled with chemometrics. A total of 62 volatile compounds were identified in 16 green tea samples. Notably, comparison of GC-MS/O and odor activity values (OAV) results revealed that nonanal, decanal, (E)-2-nonenal, β-ionone, and 1-octen-3-one were the most powerful aroma-active compounds that contributed to the aroma profile of the bead-shaped green teas. Furthermore, multivariate statistical techniques (such as principal component anal., partial least squares-discriminant anal., and hierarchical cluster anal.) were used to characterize the bead-shaped green teas according to their geog. origin and the flavor characteristics of their volatile compounds Addnl., the variable importance in the projection method was used to identify 20 volatile markers that could successfully distinguish bead-shaped green teas on the basis of three flavor characteristics. The results of the anal. revealed that HS-SPME and GC-MS/O coupled with chemometrics can provide an effective method for characterizing and classifying bead-shaped green teas.Methyl Salicylate(cas: 119-36-8COA of Formula: C8H8O3) was used in this study.

Methyl Salicylate(cas: 119-36-8) has been used: as a component of clarifying solution for treating Mongolian gerbil cochlea intact for immunofluorescence analysis, as a plant elicitor to test its effect on reducing the whitefly population from tomato plants.COA of Formula: C8H8O3

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

《Three-Component Reaction for the Synthesis of Highly Functionalized Propargyl Ethers》 was written by Pisella, Guillaume; Gagnebin, Alec; Waser, Jerome. Related Products of 609-14-3 And the article was included in Chemistry – A European Journal in 2020. The article conveys some information:

Copper-catalyzed three-component reaction of diazo compounds, alcs. and ethynyl benziodoxole (EBX) reagents for the synthesis of propargyl ethers was reported. Extensive variations of the three partners of the reaction was possible, led to highly functionalized and structurally diverse products under mild conditions. Alkynylation of a copper ylide intermediate was postulated as key step for this transformation. In the experiment, the researchers used Ethyl 2-methyl-3-oxobutanoate(cas: 609-14-3Related Products of 609-14-3)

Ethyl 2-methyl-3-oxobutanoate(cas: 609-14-3) 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.Related Products of 609-14-3

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

Li, Xiaohua; Xue, Yang; Ma, Xinyu; Guo, Ruiwei published their research in Macromolecular Chemistry and Physics in 2021. The article was titled 《Direct Determination of Interchain Transfer Constants of Benzyl Acrylate to Poly(Ethyl Acrylate) by RAFT Polymerization and Polymer Chromatography》.Application In Synthesis of Benzyl acrylate The article contains the following contents:

Interchain transfer is an important side reaction in radical polymerization of acrylates and has significant effects on both reaction kinetics and the resulting polymer microstructures. In this study, an effective method for direct determination of the interchain transfer constant (Ctr) is established via the combination of RAFT polymerization of a monomer in the presence of another prepared polymer and subsequent separation using polymer chromatog. The Ctr of benzyl acrylate (BzA) to poly(Et acrylate) (PEA) is determined with benzyl N-carbazole dithiocarbamate (BCBD) as the RAFT agent and the effects of polymerization recipe, such as BzA/BCBD mole ratios, BzA/PEA mass ratios, and solvent amounts on Ctr determination investigated. The results indicate that interchain transfer reactions show clear short chain radical effects in early stage of RAFT polymerization and the exptl. recipes have little influence on the determination The Ctr values are in the range of 1-2 x 10-4 at 90-120°C and the activation energy of Ctr at 47.8 kJ mol-1. In the experimental materials used by the author, we found Benzyl acrylate(cas: 2495-35-4Application In Synthesis of Benzyl acrylate)

Benzyl acrylate(cas: 2495-35-4) has been used in preparation of high refractive index polyacrylates. Benzyl acrylate is used in the preparation of heptanoic acid benzyl ester. It is used to prepare polybenzylacrylate using azobisisobutyronitrile as initiator.Application In Synthesis of Benzyl acrylate

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