Tag: 100-200

《Evaluation of efficient and practical methods for the preparation of functionalized aliphatic trifluoromethyl ethers》 was written by Sokolenko, Taras M.; Dronkina, Maya I.; Magnier, Emmanuel; Yagupolskii, Lev M.; Yagupolskii, Yurii L.. Product Details of 6149-41-3This research focused ontrifluoromethyl ether preparation; trichloromethyl ether preparation fluorination; elemental chlorine xanthate chlorination; xanthate one pot oxidative desulfurization fluorination; antimony trifluoride; chlorination; fluorination; hydrogen fluoride; oxidative desulfurization-fluorination; trifluoromethyl ethers. The article conveys some information:

The “”chlorination/fluorination”” technique for aliphatic trifluoromethyl ethers, e.g., I synthesis was investigated and a range of products with various functional groups was prepared The results were compared with oxidative desulfurization-fluorination of xanthates with the same structure. The experimental process involved the reaction of Methyl 3-hydroxypropanoate(cas: 6149-41-3Product Details 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. Product Details of 6149-41-3

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

《Construction of Thiazole-Fused Dihydropyrans via Formal [4 + 2] Cycloaddition Reaction on DNA》 was written by Wu, Wenting; Sun, Zhen; Wang, Xuan; Lu, Xiaojie; Dai, Dongcheng. HPLC of Formula: 128740-03-4 And the article was included in Organic Letters on April 17 ,2020. The article conveys some information:

An efficient and facile formal [4 + 2] cycloaddition reaction was developed to synthesize diverse thiazole-fused dihydropyrans (TFDP) on DNA. Mild reaction conditions, broad substrate scope, and compatibility with subsequent enzymic ligation demonstrated the utility of this methodol. in DNA-encoded library synthesis. After reading the article, we found that the author used Ethyl Allyl(2-oxoethyl)carbamate(cas: 128740-03-4HPLC of Formula: 128740-03-4)

Ethyl Allyl(2-oxoethyl)carbamate(cas: 128740-03-4) belongs to anime. Nitrous acid converts secondary amines (aliphatic or aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl group is eliminated as an aldehyde or ketone, along with nitrous oxide, N2O.HPLC of Formula: 128740-03-4

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

Application of 403-33-8In 2020 ,《Structure based discovery of novel hexokinase 2 inhibitors》 was published in Bioorganic Chemistry. The article was written by Liu, Yang; Li, Mingxue; Zhang, Yujie; Wu, Canrong; Yang, Kaiyin; Gao, Suyu; Zheng, Mengzhu; Li, Xingzhou; Li, Hua; Chen, Lixia. The article contains the following contents:

Hexokinase 2 (HK2) is over-expressed in most of human cancers and has been proved to be a promising target for cancer therapy. In this study, based on the structure of HK2, we screened over 6 millions of compounds to obtain the lead. A total of 26 (E)-N’-(2,3,4-trihydroxybenzylidene) arylhydrazide derivatives were then designed, synthesized, and evaluated for their HK2 enzyme activity and IC50 values against two cancer cell lines. Most of the 26 target compounds showed excellently in vitro activity. Among them, compound 3j showed the strongest inhibitory effects on HK2 enzyme activity with an IC50 of 0.53 ± 0.13μM and exhibited the most potent growth inhibition against SW480 cells with an IC50 of 7.13 ± 1.12μM, which deserves further studies. In the experimental materials used by the author, we found Methyl 4-fluorobenzoate(cas: 403-33-8Application of 403-33-8)

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.Application of 403-33-8

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Quality Control of Ethyl 3-oxopentanoateIn 2020 ,《Semi-Industrial Fluorination of β-Keto Esters with SF4 : Safety vs Efficacy》 was published in Synlett. The article was written by Trofymchuk, Serhii A.; Kliukovskyi, Denys V.; Semenov, Sergey V.; Khairulin, Andrii R.; Shevchenko, Valerii O.; Bugera, Maksym Y.; Tarasenko, Karen V.; Volochnyuk, Dmitriy M.; Ryabukhin, Sergey V.. The article contains the following contents:

The possibility of deoxofluorination of β-keto esters using SF4 was investigated. The scope and limitation of the reaction were determined The efficient method for the synthesis of β,β-difluorocarboxylic acids was elaborated based on the reaction. The set of mentioned acids, being the perspective building blocks for medicinal chem., were synthesized on multigram scale. The safety of SF4 use was discussed. The described method does not improve upon the safety of using SF4, but practical recommendations for working with the reagent were proposed. Despite the hazards of using toxic SF4, a significant increase of efficacy in the synthesis of medicinal-chem.-relevant building blocks, based on the reaction, in comparison with earlier described approaches was shown. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxopentanoate(cas: 4949-44-4Quality Control of Ethyl 3-oxopentanoate)

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.Quality Control of Ethyl 3-oxopentanoate

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

Formula: C10H10O2In 2019 ,《Catalyst Control in Positional-Selective C-H Alkenylation of Isoxazoles and a Ruthenium-Mediated Assembly of Trisubstituted Pyrroles》 appeared in Organic Letters. The author of the article were Kumar, Pravin; Kapur, Manmohan. The article conveys some information:

High levels of catalyst control are demonstrated in determining the positional selectivity in C-H alkenylation of isoxazoles. A cationic rhodium-mediated, strong-directing group promotes C(sp2)-H activation at the proximal aryl ring whereas, the palladium-mediated electrophilic metalation leads to the C(sp2)-H activation at the distal position of the directing group. Synthetic elaboration of this C-H alkenylation product via ruthenium and copper co-catalysis leads to an efficient method for the assembly of densely substituted pyrroles.Benzyl acrylate(cas: 2495-35-4Formula: C10H10O2) was used in this study.

Benzyl acrylate(cas: 2495-35-4) is a reagent that can be used in the preparation of 2-(Phosphonomethyl)pentanedioic Acid, a selective glutamate carboxypeptidase 2 (GCP-II) inhibitor. It can also be used in the preparation of high refractive index polyacrylates.Formula: C10H10O2

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

SDS of cas: 4248-19-5In 2022 ,《Regioselective Cycloaddition and Substitution Reaction of Tertiary Propargylic Alcohols and Heteroareneboronic Acids via Acid Catalysis》 appeared in Organic Letters. The author of the article were Bai, Jian-Fei; Tang, Jianbo; Gao, Xiaolong; Jiang, Zhi-Jiang; Tang, Bencan; Chen, Jia; Gao, Zhanghua. The article conveys some information:

An acid-catalyzed formal cycloaddition and dehydrative substitution reaction of tertiary propargylic alcs. and heteroareneboronic acids was reported. The properties of the substituents on the alkynyl moiety determines the regioselectivity of the reaction, which could selectively construct fused heterocycles, tetrasubstituted allenes, or 1,3-dienes. This reaction proceeded efficiently with a wide array of substrate scope in up to 89% yield. A significant advantage of this protocol is the transition-metal-free and mild conditions needed. In the part of experimental materials, we found many familiar compounds, such as tert-Butyl carbamate(cas: 4248-19-5SDS of cas: 4248-19-5)

tert-Butyl carbamate(cas: 4248-19-5) 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.SDS of cas: 4248-19-5

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

Application In Synthesis of N-tert-ButoxycarbonylhydroxylamineIn 2019 ,《Deacetylative Amination of Acetyl Arenes and Alkanes with C-C Bond Cleavage》 appeared in Organic Letters. The author of the article were Hyodo, Kengo; Hasegawa, Genna; Maki, Hiroya; Uchida, Kingo. The article conveys some information:

The Bronsted acid-catalyzed synthesis of primary amines from acetyl arenes and alkanes with C-C bond cleavage is described. Although the conversion from an acetyl group to amine has traditionally required multiple steps, the method described herein, which uses an oxime reagent as an amino group source, achieves the transformation directly via domino transoximation/Beckmann rearrangement/Pinner reaction. The method was also applied to the synthesis of γ-aminobutyric acids, such as baclophen and rolipram. The results came from multiple reactions, including the reaction of N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3Application In Synthesis of N-tert-Butoxycarbonylhydroxylamine)

N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3) belongs to anime. The methylamines occur in small amounts in some plants. Many polyfunctional amines (i.e., those having other functional groups in the molecule) occur as alkaloids in plants—for example, mescaline, 2-(3,4,5-trimethoxyphenyl)ethylamine; the cyclic amines nicotine, atropine, morphine, and cocaine; and the quaternary salt choline, N-(2-hydroxyethyl)trimethylammonium chloride, which is present in nerve synapses and in plant and animal cells.Application In Synthesis of N-tert-Butoxycarbonylhydroxylamine

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

In 2022,Zhidkov, Maxim E.; Kaune, Moritz; Kantemirov, Alexey V.; Smirnova, Polina A.; Spirin, Pavel V.; Sidorova, Maria A.; Stadnik, Sergey A.; Shyrokova, Elena Y.; Kaluzhny, Dmitry N.; Tryapkin, Oleg A.; Busenbender, Tobias; Hauschild, Jessica; Rohlfing, Tina; Prassolov, Vladimir S.; Bokemeyer, Carsten; Graefen, Markus; von Amsberg, Gunhild; Dyshlovoy, Sergey A. published an article in Marine Drugs. The title of the article was 《Study of Structure-Activity Relationships of the Marine Alkaloid Fascaplysin and Its Derivatives as Potent Anticancer Agents》.Category: esters-buliding-blocks The author mentioned the following in the article:

Marine alkaloid fascaplysin and its derivatives are known to exhibit promising anticancer properties in vitro and in vivo. However, toxicity of these mols. to non-cancer cells was identified as a main limitation for their clin. use. Here, for the very first time, we synthesized a library of fascaplysin derivatives covering all possible substituent introduction sites, i.e., cycles A, C and E of the 12H-pyrido[1-2-a:3,4-b′]diindole system. Their selectivity towards human prostate cancer vs. non-cancer cells, as well as the effects on cellular metabolism, membrane integrity, cell cycle progression, apoptosis induction and their ability to intercalate into DNA were investigated. A pronounced selectivity for cancer cells was observed for the family of di- and trisubstituted halogen derivatives (modification of cycles A and E), while a modification of cycle C resulted in a stronger activity in therapy-resistant PC-3 cells. Among others, 3,10-dibromofascaplysin exhibited the highest selectivity, presumably due to the cytostatic effects executed via the targeting of cellular metabolism Moreover, an introduction of radical substituents at C-9, C-10 or C-10 plus C-3 resulted in a notable reduction in DNA intercalating activity and improved selectivity. Taken together, our research contributes to understanding the structure-activity relationships of fascaplysin alkaloids and defines further directions of the structural optimization. After reading the article, we found that the author used Diethyl 2-methylmalonate(cas: 609-08-5Category: esters-buliding-blocks)

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.Category: esters-buliding-blocks

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

In 2022,Shen, Li-Wen; Wang, Zhen-Hua; You, Yong; Zhao, Jian-Qiang; Zhou, Ming-Qiang; Yuan, Wei-Cheng published an article in Organic Letters. The title of the article was 《α-Nitrosostyrenes as Three-Atom Units for the (3+1) Cyclization Reaction: Facile Access to 2,3-Dihydrodiazete N-Oxides and Their Diversified Synthetic Conversions》.Electric Literature of C5H11NO3 The author mentioned the following in the article:

An unprecedented (3 + 1) cyclization of α-nitrosostyrenes, in situ generated from α-bromooximes, and N-tosyloxycarbamates was developed, which enables the synthesis of a range of structurally unique and hitherto unexplored 2,3-dihydrodiazete N-oxides in moderate to high yields. The products possess a highly strained four-membered ring structure containing two nitrogen atoms. The synthetic applicability of the products was also demonstrated by many important conversions to diverse nitrogen-containing compounds After reading the article, we found that the author used N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3Electric Literature of C5H11NO3)

N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3) 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.Electric Literature of C5H11NO3

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

In 2022,Xi, Xiaoxiang; Chen, Yukun; Yuan, Weiming published an article in Organic Letters. The title of the article was 《Nickel-Catalyzed Three-Component Alkylacylation of Alkenes Enabled by a Photoactive Electron Donor-Acceptor Complex》.Synthetic Route of C10H10O2 The author mentioned the following in the article:

An electron donor-acceptor complex-enabled, nickel-catalyzed three-component net-reductive 1,2-alkylacylation of alkenes is developed. This conjunctive reductive acyl cross-coupling process obviates the use of an exogenous photocatalyst and a stoichiometric metal-based reductant, affording various synthetically useful 1,3-dicarbonyl compounds in good yields with a broad substrate scope and excellent functional group tolerance. Both alkyl and acyl electrophiles are derived from the highly abundant and readily accessible carboxylic acids, making the catalytic 1,2-dicarbofunctionalization more synthetically general and sustainable. In the part of experimental materials, we found many familiar compounds, such as Benzyl acrylate(cas: 2495-35-4Synthetic Route of C10H10O2)

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.Synthetic Route of C10H10O2

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