Tag: 100-200

Guo, Hong-Mei; Wu, Xuesong published their research in Nature Communications in 2021. The article was titled 《Selective deoxygenative alkylation of alcohols via photocatalytic domino radical fragmentations》.Recommanded Product: 2495-35-4 The article contains the following contents:

A one-pot strategy for deoxygenative Giese reaction of alcs. with electron-deficient alkenes, by using xanthate salts as alc.-activating groups for radical generation under visible-light photoredox conditions in the presence of triphenylphosphine were reported. The convenient generation of xanthate salts and high reactivity of sequential C-S/C-O bond homolytic cleavage enable efficient deoxygenation of primary, secondary and tertiary alcs. with diverse functionality and structure to generate the corresponding alkyl radicals, including Me radical. Moreover, chemoselective radical monodeoxygenation of diols was achieved via selective formation of xanthate salts. In the experiment, the researchers used many compounds, for example, Benzyl acrylate(cas: 2495-35-4Recommanded Product: 2495-35-4)

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.Recommanded Product: 2495-35-4

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Synthesis and SAR studies of novel 1,2,4-oxadiazole-sulfonamide based compounds as potential anticancer agents for colorectal cancer therapy》 was written by Shamsi, Farheen; Hasan, Phool; Queen, Aarfa; Hussain, Afzal; Khan, Parvez; Zeya, Bushra; King, Hannah M.; Rana, Sandeep; Garrison, Jered; Alajmi, Mohamed F.; Rizvi, M. Moshahid Alam; Zahid, Muhammad; Imtaiyaz Hassan, Md.; Abid, Mohammad. Computed Properties of C8H6FNO4 And the article was included in Bioorganic Chemistry in 2020. The article conveys some information:

A diverse series of 1,2,4-oxadiazoles, e.g., I was designed, synthesized and evaluated as anticancer agents targeting carbonic anhydrase IX (CAIX). Initial structure-activity anal. suggested that the thiazole/thiophene-sulfonamide conjugates of 1,2,4-oxadiazoles exhibited potent anticancer activities with low μM potencies. 4-Methyl-N-(2-(3-phenyl-1,2,4-oxadiazol-5-yl)thiophen-3yl)benzenesulfonamide exhibited antiproliferative activity (IC50 = 11.1μM) along with appreciable inhibition potential for tumor-associated CAIX (IC50 = 4.23μM) isoform. Therefore, it was structurally optimized and its SAR oriented derivatives II [R1 = Me, Ph, 4-FC6H4, etc.; R2 = Me, Ph] were synthesized and evaluated. This iteration resulted in compound II [R1 = 4-H2NC6H4, R2 = Ph] with an almost two-fold increase in antiproliferative effect (IC50 = 6.0μM) comparable to the clin. drug doxorubicin and significantly higher potency against CAIX (IC50 = 0.74μM). Addnl., compound II [R1 = 4-H2NC6H4, R2 = Ph] treatment decreased the expression of CAIX, induced apoptosis and ROS production, inhibited colony formation and migration of colon cancer cells. The experimental process involved the reaction of Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Computed Properties of C8H6FNO4)

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.Computed Properties of C8H6FNO4

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Multiscale orthogonal matching pursuit algorithm combined with peak model for interpreting ion mobility spectra and achieving quantitative analysis》 was written by Zhang, Genwei; Peng, Silong; Xie, Qiong; Yang, Liu; Cao, Shuya; Huang, Qibin. Quality Control of Methyl Salicylate And the article was included in Analytica Chimica Acta in 2020. The article conveys some information:

Ion mobility spectrometry is an important rapid anal. method. However, it is difficult to achieve quant. anal. when spectral peaks overlap. A new method for analyzing ion mobility spectra is presented here. The method achieves quant. anal. by combining the advantages of the peak model (in terms of optimal phys. and chem. interpretation of the system of interest) and the multiscale orthogonal matching pursuit algorithm (in terms of extracting characteristic peaks). A simulated data set, constructed using the peak model, containing overlapping peaks was analyzed to demonstrate the ability of the multiscale orthogonal matching pursuit algorithm to decompose overlapping peaks. Real data sets for Me salicylate and a mixture of acetone and Me salicylate at 16 concentrations were generated using a vapor generator (using permeation tubes). The characteristic peaks were extracted using the multiscale orthogonal matching pursuit algorithm. Univariate calibrations using the peak area and peak height were prepared to allow quant. analyses to be performed. Multivariate calibrations using partial-least-squares and poly-partial-least-squares were prepared and the results were compared with the univariate calibration results. Markedly better or similar predictions were made using the univariate calibration models involving phys. and chem. interpretations than using the multivariate calibration models.Methyl Salicylate(cas: 119-36-8Quality Control of Methyl Salicylate) 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.Quality Control of Methyl Salicylate

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Discovery of [1,2,4]triazolo[1,5-a]pyrimidine derivatives as new bromodomain-containing protein 4 (BRD4) inhibitors》 was written by Wang, Shuai; Shen, Dandan; Zhao, Lijie; Yuan, Xiaohan; Cheng, Jialing; Yu, Bin; Zheng, Yichao; Liu, Hongmin. Name: Ethyl 2-methyl-3-oxobutanoate And the article was included in Chinese Chemical Letters in 2020. The article conveys some information:

Targeting bromodomain-containing protein 4 (BRD4) has been proved to be an effective strategy for cancer therapy. To date, numerous BRD4 inhibitors and degraders have been identified, some of which have advanced into clin. trials. In this work, a focused library of new [1,2,4]triazolo[1,5-a]pyrimidine derivatives were discovered to be able to inhibit BRD4. WS-722 inactivated BRD4 (BD1/BD2), BRD2 (BD1/BD2) and BRD3 (BD1/BD2) broadly with the IC50 values less than 5μmol/L. Besides, WS-722 inhibited growth of THP-1 cells with an IC50 value of 3.86μmol/L. Like (+)-JQ1, WS-722 inhibited BRD4 in a reversible manner and enhanced protein stability. Docking studies showed that WS-722 occupied the central acetyl-lysine (Kac) binding cavity and formed a hydrogen bond with Asn140. In THP-1 cells, WS-722 showed target engagement to BRD4. Cellular effects of WS-722 on THP-1 cells were also examined, showing that WS-722 could block c-MYC expression, induce G0/G1 phase arrest and p21 up-regulation, and promote differentiation of THP-1 cells. BRD4 inhibition by WS-722 resulted in cell apoptosis and up-regulated expression of cleaved caspased-3/7 and PARP in THP-1 cell lines. The [1,2,4]triazolo[1,5-a]pyrimidine is a new template for the development of new BRD4 inhibitors. After reading the article, we found that the author used Ethyl 2-methyl-3-oxobutanoate(cas: 609-14-3Name: Ethyl 2-methyl-3-oxobutanoate)

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.Name: Ethyl 2-methyl-3-oxobutanoate

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

《Continuous catalytic process for the selective dehydration of glycerol over Cu-based mixed oxide》 was published in Journal of Catalysis in 2020. These research results belong to Mazario, Jaime; Concepcion, Patricia; Ventura, Maria; Domine, Marcelo E.. Recommanded Product: 6149-41-3 The article mentions the following:

The selective dehydration of glycerol to hydroxyacetone (acetol) was studied with Cu-based mixed oxides derived from hydrotalcite as catalysts in a continuous flow fix-bed reactor. Catalysts were prepared by co-precipitation and characterized by ICP, N2 adsorption, XRD, NH3-TPD, CO2-TPD, TPR and TEM. Different parameters were investigated to develop the most appropriate material as well as to determine the function of every metallic species. The optimized Cu-Mg-AlOx offered ≈60% acetol selectivity at >90% glycerol conversion (≈80% liquid yield, up to TOS = 9 h). The catalyst could be regenerated by calcination, achieving full activity recovery after five re-cycles. “”In-situ”” FTIR and XPS measurements evidenced that the presence of Cu, specially the most active Cu1+ species, was essential to carry out the dehydration to acetol with high reaction rates, and to form the preferred intermediate (with C=O group); although a minor contribution from Cu0 and Cu2+ species could not be discarded. In addition to this study using Methyl 3-hydroxypropanoate, there are many other studies that have used Methyl 3-hydroxypropanoate(cas: 6149-41-3Recommanded Product: 6149-41-3) was used in this study.

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. Recommanded Product: 6149-41-3

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

The author of 《De-symmetrizing periodically grafted amphiphilic copolymers: design, synthesis and generation of Janus folded chains》 were Sarkar, Ramkrishna; Gowd, E. Bhoje; Ramakrishnan, S.. And the article was published in Polymer Chemistry in 2019. Formula: C8H14O4 The author mentioned the following in the article:

Periodically grafted amphiphilic copolymers (PGACs) were earlier shown to fold in a zigzag fashion to enable segregation of the two immiscible segments, namely the backbone and the pendant segments; crystallization of one or both segments led to the formation of a lamellar structure with the two segments located in alternate layers. In the present study two different pendant segments, namely PEG and fluorocarbon, were installed at periodic intervals in an alternating fashion along a polyethylene-like polyester backbone; the mutual immiscibility between the three different segments, namely backbone alkylene (HC), PEG and fluorocarbon (FC), causes the polymer to fold as earlier, but now the zigzag folded chain would carry fluoroalkyl segments on one side and PEG on the other, thereby generating de-symmetrized Janus-type folded chains. Using DSC, SAXS, WAXS, AFM and FT-IR measurements, we demonstrate the self-segregation and independent crystallization of all three segments, and the formation of a lamellar morphol. bearing three different layers. Such layering of three different types of segments in a graft copolymer is unprecedented and could pave the way for interesting applications that require separation of two different functional entities at sub-10 nm length scales. In addition to this study using Diethyl 2-methylmalonate, there are many other studies that have used Diethyl 2-methylmalonate(cas: 609-08-5Formula: 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.Formula: C8H14O4

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

The author of 《Temporal relationship between emitted and endogenous floral scent volatiles in summer- and winter-blooming Jasminum species》 were Barman, Monica; Mitra, Adinpunya. And the article was published in Physiologia Plantarum in 2019. Recommanded Product: Methyl Salicylate The author mentioned the following in the article:

Jasminum spp. is cultivated for their fragrant flowers used in essential oil production and cosmetic uses. An attempt was made to study the temporal variations in floral scent volatiles composition including emitted, free endogenous and glycosyl-linked volatile compounds from two summer-blooming species namely, Jasminum auriculatum and Jasminum grandiflorum as well as from two winter-blooming species namely, Jasminum multiflorum and Jasminum malabaricum. The overall emitted volatile organic compounds (VOCs) were found to be highest when the matrix Porapak Q 80/100 was used with dichloromethane (DCM) as elution solvent. The floral volatile emission from bud to senescence exhibited nocturnal maxima pattern for both the summer-blooming species. Both the winter-blooming species emitted its highest concentration at noon. The free endogenous concentrations of all VOCs were low when corresponding emitted concentrations were high. Enzymic treatment of petal extract revealed that several aromatic volatiles including aromatic alcs. and monoterpenols are synthesized and stored in the flowers as water-soluble glycosides; these compounds were shown to accumulate in higher amounts in flowers at late bud stage. These findings indicate the utilization of the precursors, i.e. the volatile-conjugates, through hydrolysis followed by their release as free-volatiles at flower opening stage. The outcome as a whole suggests a linkage among the temporal pattern of emitted volatiles, free-endogenous volatiles and glycoside-bound volatile compounds in all above studied Jasminum spp. and provided an overview of their floral volatilome. In the experimental materials used by the author, we found Methyl Salicylate(cas: 119-36-8Recommanded Product: Methyl Salicylate)

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.Recommanded Product: Methyl Salicylate

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

The author of 《Synthesizing 1,23-C60 Adducts with Improved Efficiency: A Type of Stable and Highly Soluble C60 Derivatives》 were Li, Dan; Li, Zong-Jun; He, Fa-Gui; Geng, Chao; Gao, Xiang. And the article was published in Journal of Organic Chemistry in 2019. HPLC of Formula: 609-08-5 The author mentioned the following in the article:

In addition to the 1,9- and 1,7-C60 adducts, the 1,23-C60 adducts are an important type of C60 derivatives, where the property of the fullerene compounds is significantly affected by the addition pattern. However, much less is known on the adducts due to the less availability of the compounds Herein, the hydroxide-promoted reactions of C60 with 2-alkylmalonates are reported, which produce the 1,23-C60 adducts with improved efficiency. The reactions were studied with the in situ vis-NIR spectral measurement in order to probe into the reaction mechanism. The obtained 1,23-C60 adducts exhibited good thermal stability and better solubility with respect to the 1,7-isomers. In the experiment, the researchers used Diethyl 2-methylmalonate(cas: 609-08-5HPLC of Formula: 609-08-5)

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.HPLC of Formula: 609-08-5

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

The author of 《Iron-catalyzed carboazidation of alkenes and alkynes》 were Xiong, Haigen; Ramkumar, Nagarajan; Chiou, Mong-Feng; Jian, Wujun; Li, Yajun; Su, Ji-Hu; Zhang, Xinhao; Bao, Hongli. And the article was published in Nature Communications in 2019. Reference of Benzyl acrylate The author mentioned the following in the article:

An iron-catalyzed rapid carboazidation of alkenes e.g., 1-tert-butyl-4-ethenylbenzene and alkynes RCCH (R = Ph, 3-chlorophenyl, n-C6H13, etc.), enabled by the oxidative radical relay precursor t-Bu perbenzoate were described. This strategy enjoys success with a broad scope of alkenes under mild conditions, and it can also work with aryl alkynes which are challenging substrates for carboazidation. A large number of diverse structures, including many kinds of amino acid precursors, fluoroalkylated vinyl azides e.g., 1-(1-azido-3,4,4,4-tetrafluoro-3-trifluoromethyl-butyl)-4-tert-butyl-benzene, other specific organoazides R1CH2CH(N3)CH2(CF2)3CF3 (R1 = 5-bromopentyl, 8-(benzyloxy)octyl, 8-hydroxyoctyl, etc.), and 2H-azirines I (R2 = n-C4F9, C2F5, c-C6F11, etc.) can be easily produced. After reading the article, we found that the author used Benzyl acrylate(cas: 2495-35-4Reference 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.Reference of Benzyl acrylate

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

In 2019,Chemical Science included an article by D’Amato, Erica M.; Borgel, Jonas; Ritter, Tobias. Name: N-tert-Butoxycarbonylhydroxylamine. The article was titled 《Aromatic C-H amination in hexafluoroisopropanol》. The information in the text is summarized as follows:

A direct radical aromatic amination reaction that provides unprotected anilines e.g., 3-O2NC6H4NH2 with an improvement in the substrate scope compared to prior art have been reported. Hydrogen bonding by the solvent hexafluoroisopropanol to anions of cationic species is responsible for increased reactivity and can rationalize the enhancement in substrate scope. These findings may have bearings on radical additions to arenes e.g., nitrobenzene for direct C-H functionalization in general. In the experiment, the researchers used many compounds, for example, N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3Name: N-tert-Butoxycarbonylhydroxylamine)

N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3) belongs to anime. Aniline, ethanolamines, and several other amines are major industrial commodities used in making rubber, dyes, pharmaceuticals, and synthetic resins and fibres and for a host of other applications. Most of the numerous methods for the preparation of amines may be broadly divided into two groups: (1) chemical reduction (replacement of oxygen with hydrogen atoms in the molecule) of members of several other classes of organic nitrogen compounds and (2) reactions of ammonia or amines with organic compounds.Name: N-tert-Butoxycarbonylhydroxylamine

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