Tag: 100-200

In 2019,Advanced Synthesis & Catalysis included an article by Zheng, Xixi; Wan, Jie-Ping. Recommanded Product: 924-99-2. The article was titled 《The C=C Bond Decomposition Initiated by Enamine-Azide Cycloaddition for Catalyst- and Additive-Free Synthesis of N-Sulfonyl Amidines》. The information in the text is summarized as follows:

The chemo-selective synthesis of N-sulfonyl amidines is realized via the decomposition of the enamine C=C bond of enaminoesters through an in situ generated triazoline intermediate. Control experiments prove that the electron withdrawing ester group in the enamine component is crucial in inducing the chemo-selective formation of amidines. The method is featured with high efficiency and sustainability by employing pure water as medium without requiring any catalyst or additive.Ethyl 3-(dimethylamino)acrylate(cas: 924-99-2Recommanded Product: 924-99-2) was used in this study.

Ethyl 3-(dimethylamino)acrylate(cas: 924-99-2) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.Recommanded Product: 924-99-2

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Ester – an overview | ScienceDirect Topics

Computed Properties of C8H17NO2On September 30, 1997 ,《Protease-catalyzed synthesis of new hydrophobic dipeptides containing non-proteinogenic amino acids》 was published in Enzyme and Microbial Technology. The article was written by Krix, G.; Eichhorn, U.; Jakubke, H. -D.; Kula, M. -R.. The article contains the following contents:

Several dipeptides containing nonproteinogenic amino acids [especially L-tert-leucine or L-neopentylglycine (Npg)] were synthesized enzymically. Thermolysin was used in solid-to-solid conversions in an equilibrium-controlled reaction while α-chymotrypsin was applied in kinetically controlled synthesis. The dipeptide PhCH2O2C-Npg-Npg-NH2 could be obtained using a protease mixture from Streptomyces. The active enzyme has not yet been purified. In the experiment, the researchers used many compounds, for example, Ethyl (2S)-2-amino-3,3-dimethylbutanoate(cas: 69557-34-2Computed Properties of C8H17NO2)

Ethyl (2S)-2-amino-3,3-dimethylbutanoate(cas: 69557-34-2) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Computed Properties of C8H17NO2 They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties.

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

《Rapid Two-Step Synthesis of Benzimidazo[1′,2′:1,5]pyrrolo[2,3-c]isoquinolines by a Three-Component Coupling Reaction》 was written by Narhe, Bharat D.; Tsai, Min-Huan; Sun, Chung-Ming. Product Details of 329-59-9This research focused onthree component coupling reaction ionic liquid supported cyanomethylbenzimidazole benzimidazopyrroloisoquinoline; Knoevenagel condensation cyanomethylbenzimidazole formylbenzoate isocyanide cycloaddition lactamization; microwave activation three component coupling benzimidazopyrroloisoquinoline synthesis. The article conveys some information:

A two-step, three-component coupling reaction on ionic liquid supported 2-cyanomethylbenzimidazoles, Me 2-formylbenzoate, and isocyanides under microwave activation is explored. Knoevenagel condensation of 2-cyanomethylbenzimidazole with methyl-2-formylbenzoate in the presence of piperidine catalyst is followed by [4 + 1] cycloaddition with an isocyanide in the next step. Consequent intramol. δ-lactam formation allows rapid construction of novel aza-pentacycles, benzimidazo[1′,2′:1,5]pyrrolo[2,3-c]isoquinolines. Thus, e.g., Knoevenagel condensation of IL-supported 2-cyanomethylbenzimidazole I (IL = imidazolium ionic liquid moiety) with Me 2-formylbenzoate in MeCN using piperidine catalyst afforded IL-bound s-trans-azadiene intermediate II; treatment of the latter with benzyl isocyanate under MW at 150° followed by KCN/MeOH treatment of the reaction mixture to remove the IL support afforded title compound III (76%).Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Product Details of 329-59-9) was used in this study.

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.Product Details of 329-59-9

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

Product Details of 4755-77-5In 2019 ,《A newfangled synthesis of integrase inhibitor drug substance raltegravir potassium》 appeared in Asian Journal of Chemistry. The author of the article were Rao, S. Venkat; Potluri, Vamsi Krishna; Potluri, Ramesh Babu. The article conveys some information:

Raltegravir sodium synthesis was achieved from its one of the key starting materials with retro synthetic approach, in which without using its critical starting material chem. known as 5-methyl-1,3,4-oxadiazole-2-carbonyl chloride and which is more unstable during the synthesis of raltegravir potassium. Almost all the existed literatures commonly using this starting material in its synthesis even it is having a stability issue and hence to achieve a stable and economically viable synthesis. The current research describes a new route of synthesis by constructing an oxadiazole ring in a retro synthetic manner.Ethyl oxalyl monochloride(cas: 4755-77-5Product Details of 4755-77-5) was used in this study.

Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Product Details of 4755-77-5

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Quality Control of Ethyl oxalyl monochlorideIn 2020 ,《Transition-metal free direct C-H functionalization of quinoxalin-2(1H)-ones with oxamic acids leading to 3-carbamoyl quinoxalin-2(1H)-ones》 appeared in Organic Chemistry Frontiers. The author of the article were Yuan, Jin-Wei; Zhu, Jun-Liang; Zhu, Hu-Lin; Peng, Fang; Yang, Liang-Yu; Mao, Pu; Zhang, Shou-Ren; Li, Yan-Chun; Qu, Ling-Bo. The article conveys some information:

A practical transition-metal free decarboxylative coupling reaction of oxamic acids with quinoxalin-2(1H)-ones was developed under mild conditions. This transformation provided an efficient approach for the preparation of 3-carbamoyl quinoxalin-2(1H)-ones, which are important subunits in biol. active natural products and medicinal chem. This protocol features broad substrate scope, good yields and mild reaction conditions. In the experiment, the researchers used Ethyl oxalyl monochloride(cas: 4755-77-5Quality Control of Ethyl oxalyl monochloride)

Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Quality Control of Ethyl oxalyl monochloride

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

Recommanded Product: Methyl SalicylateIn 2020 ,《Bacteria Affect Plant-Mite Interactions Via Altered Scent Emissions》 appeared in Journal of Chemical Ecology. The author of the article were Karamanoli, K.; Kokalas, V.; Koveos, D. S.; Junker, R. R.; Farre-Armengol, G.. The article conveys some information:

Epiphytic bacteria have been shown to affect the composition of volatiles released by plants and as a consequence the behavior of other organisms towards the plant, such as herbivores and/or pathogens. In this study, we explored the effects of inoculation with three bacterial strains, namely Pseudomonas syringae, Pantoea ananatis, and Pseudomonas putida, on the composition of leaf volatile organic compounds (VOCs) emitted by bean plants (Phaseolus vulgaris L.). In addition, we examined responses of the two-spotted spider mite (Tetranychus urticae) to VOCs by measuring leaf damage and oviposition of female adults after bacterial inoculation. Colonized bean plants emitted different VOCs depending on the bacterial inoculum. The quantities of volatiles 1-undecanol and (Z)-3-hexen-1-ol significantly increased after P. syringae inoculation, while Me salicylate and anisole increased in response to P. ananatis. T. urticae females preferred control plants over plants inoculated with P. syringae or P. putida in olfactometer assays, while no particular preference was recorded in the presence of P. ananatis. Furthermore, leaf damage caused by spider mites was 3-fold lower in plants inoculated with P. syringae than in control plants and plants inoculated with P. ananatis. Subsequently, the number of eggs laid on leaves inoculated with P. syringae was significantly lower than on those inoculated with P. ananatis or on the control ones. Moreover, a significantly higher number of spider mites selected Me salicylate odor source over 1-undecanol, in a two-choice bioassay. The results demonstrate the bacterial involvement in plant-arthropod interactions and suggest further investigation on the potential use of bacteria as biocontrol agents in agriculture. In the part of experimental materials, we found many familiar compounds, such as Methyl Salicylate(cas: 119-36-8Recommanded Product: Methyl Salicylate)

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.Recommanded Product: Methyl Salicylate

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

In 2022,Yang, Lin; Zhang, Yiping; Liu, Yan; Wang, Hualei; Wei, Dongzhi published an article in Biochemical Engineering Journal. The title of the article was 《Highly efficient synthesis of pharmaceutically relevant chiral 3-N-substituted-azacyclic alcohols using two enantiocomplementary short chain dehydrogenases》.Electric Literature of C7H12O3 The author mentioned the following in the article:

Two stereocomplementary alc. dehydrogenases from Flavobacterium psychrophilum (FpADH) and Flavobacterium sp. was reported. (FsADH), which showed the potential industrial application in highly efficient synthesis of a series of enantiomerically pure 3-N-substituted-azacyclic alochols. Both the enzymes showed high catalytic activity toward the model substrate N-Boc-4-piperidone (NBPO) and presented a strict enantioselectivity for the corresponding alc. products. In addition, both enzymes showed broad substrate scope, including ketoesters, acryl ketones and heterocyclic ketones. Using glucose dehydrogenase coexpressed with each of the enzymes to realize the efficient coenzyme recycling, various pharmaceutically relevant chiral 3-N-Boc azacyclic alcs. were asym. synthesized at high substrate concentrations (343.7-643.8 g/L) and low equilvelent of NADP+ (0.1 mM) with excellent enantioselectivity (> 99.5% e.e), which have met the requirements of biocatalytic processes in the industry and demonstrated the feasibility of FpADH and FsADH for industrial application in the biotransformation of chiral 3-N-substituted-azacyclic alcs. The mol. basis of the enantioselectivity and catalytic efficiency of both enzymes were revealed the by mol. docking and MD simulation anal. The results came from multiple reactions, including the reaction of Ethyl 3-oxopentanoate(cas: 4949-44-4Electric Literature 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.Electric Literature of C7H12O3

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

In 2022,Peng, Ting; He, Yujiao; Wang, Tao; Yu, Jialing; Ma, Xiaofang; Zhou, Zongyuan; Sheng, Yuwen; Li, Lingyu; Peng, Huipan; Li, Sheng; Zou, Jiawei; Yuan, Yi; Zhao, Yongyun; Shi, Hailong; Li, Fu; Liu, Wanli; Hu, Kaifeng; Lu, Xiaoxia; Zhang, Guolin; Wang, Fei published an article in Journal of Medicinal Chemistry. The title of the article was 《Discovery of a Novel Small-Molecule Inhibitor Disrupting TRBP-Dicer Interaction against Hepatocellular Carcinoma via the Modulation of microRNA Biogenesis》.Recommanded Product: 4949-44-4 The author mentioned the following in the article:

MicroRNAs (miRNAs) are key players in human hepatocellular carcinoma (HCC) tumorigenesis. Therefore, small mols. targeting components of miRNA biogenesis may provide new therapeutic means for HCC treatment. By a high-throughput screening and structural simplification, we identified a small mol., CIB-3b (I), which suppresses the growth and metastasis of HCC in vitro and in vivo by modulating expression profiles of miRNAome and proteome in HCC cells. Mechanistically, CIB-3b phys. binds to transactivation response (TAR) RNA-binding protein 2 (TRBP) and disrupts the TRBP-Dicer interaction, thereby altering the activity of Dicer and mature miRNA production Structure-activity relationship study via the synthesis of 45 CIB-3b derivatives showed that some compounds exhibited a similar inhibitory effect on miRNA biogenesis to CIB-3b. These results support TRBP as a potential therapeutic target in HCC and warrant further development of CIB-3b along with its analogs as a novel therapeutic strategy for the treatment of HCC. In addition to this study using Ethyl 3-oxopentanoate, there are many other studies that have used Ethyl 3-oxopentanoate(cas: 4949-44-4Recommanded Product: 4949-44-4) 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.Recommanded Product: 4949-44-4

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

In 2022,Li, Zhao-Feng; He, Hong-Jiao; Wang, Rong-Hui; Zhou, Li-Yan; Xiao, You-Cai; Chen, Fen-Er published an article in Organic Chemistry Frontiers. The title of the article was 《Copper-catalyzed asymmetric alkynylation of pyrazole-4,5-diones using chloramphenicol base-derived hydroxyl oxazoline ligands》.Application of 4949-44-4 The author mentioned the following in the article:

The asym. copper-catalyzed alkynylation reactions of pyrazole 4,5-diones in the presence of a hydroxyl oxazoline ligand, which was derived from low cost, easily accessible chloramphenicol base (ANP), was reported. The notable features of this protocol include its mild and base additive free reaction conditions and broad functional group tolerance. In addition to this study using Ethyl 3-oxopentanoate, there are many other studies that have used Ethyl 3-oxopentanoate(cas: 4949-44-4Application of 4949-44-4) was used in this study.

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.Application of 4949-44-4

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

Naranjo, Steven E.; Hagler, James R.; Byers, John A. published their research in Environmental Entomology in 2021. The article was titled 《Methyl salicylate fails to enhance arthropod predator abundance or predator to pest ratios in cotton》.HPLC of Formula: 119-36-8 The article contains the following contents:

Conservation biol. control is a fundamental tactic in integrated pest management (IPM). Greater biol. control services can be achieved by enhancing agroecosystems to be more favorable to the presence, survival, and growth of natural enemy populations. One approach that has been tested in numerous agricultural systems is the deployment of synthetic chems. that mimic those produced by the plant when under attack by pests. These signals may attract arthropod natural enemies to crop habitats and thus potentially improve biol. control activity locally. A 2-yr field study was conducted in the cotton agroecosystem to evaluate the potential of synthetic Me salicylate (MeSA) to attract native arthropod natural enemies and to enhance biol. control services on two key pests. Slow-release packets of MeSA were deployed in replicated cotton plots season long. The abundance of multiple taxa of natural enemies and two major pests were monitored weekly by several sampling methods. The deployment of MeSA failed to increase natural enemy abundance and pest densities did not decline. Predator to prey ratios, used as a proxy to estimate biol. control function, also largely failed to increase with MeSA deployment. One exception was a season-long increase in the ratio of Orius tristicolor (White) (Hemiptera: Anthocoridae) to Bemisia argentifolii Bellows and Perring (= Bemisia tabaci MEAM1) (Hemiptera: Aleyrodidae) adults within the context of biol. control informed action thresholds. Overall results suggest that MeSA would not likely enhance conservation biol. control by the natural enemy community typical of U.S. western cotton production systems. In addition to this study using Methyl Salicylate, there are many other studies that have used Methyl Salicylate(cas: 119-36-8HPLC of Formula: 119-36-8) 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.HPLC of Formula: 119-36-8

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