Month: January 2023

3-Substituted 2-isocyanopyridines as versatile convertible isocyanides for peptidomimetic design was written by Hollanders, Charlie;Elsocht, Mathias;Van der Poorten, Olivier;Jida, Mouhamad;Renders, Evelien;Maes, Bert U. W.;Ballet, Steven. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2021.Recommanded Product: 14667-47-1 This article mentions the following:

We report the use of 3-substituted 2-isocyanopyridines as convertible isocyanides in Ugi four-component reactions. The N-(3-substituted pyridin-2-yl)amide Ugi products can be cleaved by amines, alcs., and water with Zn(OAc)₂ as a catalyst. In addition, the applicability of the method was demonstrated in constrained di-/tripeptides bearing acid and base sensitive protective groups obtained via Ugi-4CR post-condensation modifications. In the experiment, the researchers used many compounds, for example, Methyl 2-aminonicotinate (cas: 14667-47-1Recommanded Product: 14667-47-1).

Methyl 2-aminonicotinate (cas: 14667-47-1) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Recommanded Product: 14667-47-1

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

Antimicrobial Activities of Plant Extracts against Solanum tuberosum L. Phytopathogens was written by Steglinska, Aleksandra;Bekhter, Anastasiia;Wawrzyniak, Pawel;Kunicka-Styczynska, Alina;Jastrzabek, Konrad;Fidler, Michal;Smigielski, Krzysztof;Gutarowska, Beata. And the article was included in Molecules in 2022.COA of Formula: C6H12O2 This article mentions the following:

The purpose of the study was to select an environmentally friendly plant biopesticide to protect seed potatoes against phytopathogens. The scope included the evaluation of the antimicrobial activities of 22 plant water extracts, 22 water-glycol extracts, and 3 subcritical carbon dioxide extracts using the agar diffusion method against 10 potato phytopathogens. For the most effective extracts, minimal inhibitory concentration (MIC), chem. composition anal. by gas chromatog.-mass spectrometry and in situ assays on seed potatoes were performed. Garlic water extract was finally selected as the most effective in phytopathogen growth inhibition, both in vitro and in situ, with MIC values ranging between 6.3-25 mg/mL. 5-Hydroxymethylfurfural was determined to be the main component of this extract (33.24%). Garlic water extract was proposed as a potential biopesticide against potato phytopathogens. In the experiment, the researchers used many compounds, for example, Methyl2-methylbutyrate (cas: 868-57-5COA of Formula: C6H12O2).

Methyl2-methylbutyrate (cas: 868-57-5) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.COA of Formula: C6H12O2

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

Four pyrrole derivatives used as building blocks in the synthesis of minor-groove binders was written by Kennedy, Alan R.;Khalaf, Abedawn I.;Scott, Fraser J.;Suckling, Colin J.. And the article was included in Acta Crystallographica, Section E: Crystallographic Communications in 2017.Application of 5930-92-7 This article mentions the following:

Nitropyrrole-based compounds, I [X = H, pentynyl], II and III are intermediates used in the synthesis of modified DNA minor-groove binders. In all four compounds, the nitro groups lie in the plane of the pyrrole ring. In compounds I [X = H, pentynyl], the ester groups also lay in the plane of the pyrrole ring. In compound II, both of the other substituents lay out of the plane of the pyrrole ring. In the case of compound III, the coplanarity extended to the second pyrrole ring and through both amide groups. In the crystals of all four compounds, layer-like structures were formed, via a combination of N-H···O and C-H···O hydrogen bonds for I [X = H], II and III, but by only C-H···O hydrogen bonds for I [X = pentynyl]. In the experiment, the researchers used many compounds, for example, Ethyl 4-nitro-1H-pyrrole-2-carboxylate (cas: 5930-92-7Application of 5930-92-7).

Ethyl 4-nitro-1H-pyrrole-2-carboxylate (cas: 5930-92-7) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Application of 5930-92-7

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

Synthesis of N-[3-alkoxy-4-(hydroxy-, alkoxy-, or acyloxy)-benzylidene- and -phenylmethyl]biphenyl-2-amines was written by Dikusar, E. A.;Potkin, V. I.;Zhukovskaya, N. A.;Kozlov, N. G.;Yuvchenko, A. P.. And the article was included in Russian Journal of General Chemistry in 2009.Application of 20665-85-4 This article mentions the following:

Condensation of aldehydes of the vanillin series (vanillin, vanillal, and ethers and esters derived therefrom) with biphenyl-2-amine in anhydrous methanol gave the corresponding Schiff bases which were reduced with Na[BH(OAc)₃] in benzene under mild conditions to obtain N-[3-alkoxy-4-(hydroxy-, alkoxy-, or acyloxy)phenylmethyl]biphenyl-2-amines I (R¹ = Me, Et; R² = alkyl, acyl). In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4Application of 20665-85-4).

4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4) belongs to esters. Esters 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. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Application of 20665-85-4

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

Synthesis and Biological Activity of Anthranilic Diamide Derivatives Incorporating 1,3,4-oxadiazole or Nitrogen-containing Saturated Heterocyclic Moieties was written by Zhou, Wen-Juan;Zhang, Li;Xiao, Wei;Chen, He-Ju;Wu, Wen-Neng;Ouyang, Gui-Ping. And the article was included in Journal of Heterocyclic Chemistry in 2017.Name: Ethyl 2-(4-fluorophenyl)acetate This article mentions the following:

A series of novel anthranilic diamide derivatives incorporating 1,3,4-oxadiazole I (R = 4-ClC₆H₄CH₂, 2,4-Cl₂C₆H₃, pyridin-2-yl, etc.) or nitrogen-containing saturated heterocyclic moieties II (X = morpholin-4-yl, cyclopropylamino, 1H-imidazol-1-yl, etc.) were synthesized, characterized, and evaluated for bacteriostatic activity against three phytopathogenic bacteria Xanthomonas oryzae pv. Oryzae (Xoo), Xanthomonas axonopodis pv. Citri (Xac), Ralstonia solanacearum (R. solanacearum). The preliminary biol. results indicated that most of the synthesized compounds exhibit bacteriostatic activity against three phytopathogenic bacteria. Among these compounds, compounds II (X = 1H-pyrrol-1-yl, 1H-imidazol-1-yl, cyclopentylamino) displayed better antibacterial activity. In the test with concentration of 200 μg/mL, antibacterial activity of compounds II (X = cyclopentylamino, 4-oxopiperidin-1-yl) was 96%. In particular, the bacteriostatic activity displayed by compound II (X = cyclohexylamino) against Xoo was similar to the one displayed by com. drug bismerthiazol. In the experiment, the researchers used many compounds, for example, Ethyl 2-(4-fluorophenyl)acetate (cas: 587-88-2Name: Ethyl 2-(4-fluorophenyl)acetate).

Ethyl 2-(4-fluorophenyl)acetate (cas: 587-88-2) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Name: Ethyl 2-(4-fluorophenyl)acetate

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

A study of a block copolymer synthesized by RAFT polymerization containing carbazole groups and a europium complex was written by Wang, W.;Ling, Q. D.;Lin, M. J.;Chen, Q. H.. And the article was included in Materials Science-Poland in 2011.Quality Control of Benzyl benzodithioate This article mentions the following:

A series of block copolymers containing carbazole groups were synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization of styrene monomer. Then the block copolymer containing carbazole groups and europium complex was synthesized by coordination. The block copolymers were characterized by elemental analyses, FT-IR, ¹HNMR, GPC, Uv-vis absorption, fluorescence spectroscopy and cyclic voltammetry. The GPC result shows that the block copolymers have narrow polydispersity and controlled mol. weights (MWs). The fluorescence spectroscopy of the block copolymer containing carbazole groups and europium complex shows red emission assigned to f-f transitions of europium ions in solid state. In addition, the presence of europium complex in the block copolymer was further evidenced by fluorescence characteristic of europium ions. The CV data reveals that in the block copolymer containing carbazole groups and the europium complex a balance can be achieved between electron currents and the electron-hole currents. Thus, the copolymer is a potentially useful candidate for fabricating memory or light emitting devices. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Quality Control of Benzyl benzodithioate).

Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Quality Control of Benzyl benzodithioate

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

Evaluating the reactivity and stereoselectivity of salicyl-type thioglycosides as non-malodorous thioglycoside alternatives for oligosaccharide synthesis was written by Dohi, Hirofumi;Sakurai, Risa;Tamura, Manami;Komai, Ryota;Nishida, Yoshihiro. And the article was included in Journal of Carbohydrate Chemistry in 2021.Formula: C16H22O11 This article mentions the following:

Herein, o-(methoxycarbonyl)phenyl thioglycosides [or (methyl)salicyl 1-thioglycosides] were evaluated as non-malodorous thioglycoside alternatives. The o-methoxycarbonyl group was expected to assist in the departure of leaving group. Salicyl-type thioglycosides exhibited high reactivity and glycosylation yields when N-iodosuccinimide and trifluoromethanesulfonic acid were used as promoters. Glycosylation with these thioglycosides in dichloromethane showed similar reactivity and stereoselectivity as those of Ph thioglycosides. Glycosylation with per-O-benzyl salicyl-type thioglycosides in dichloromethane showed 1,2-cis-selectivity, while the same reaction in nitriles afforded predominantly 1,2-trans glycosides. In contrast, glycosylation with per-O-benzoyl thioglycosides afforded exclusively 1,2-trans glycosides. These results strongly suggest that salicyl-type thioglycosides can serve as non-malodorous alternatives for Ph thioglycosides. In the experiment, the researchers used many compounds, for example, (2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4Formula: C16H22O11).

(2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Formula: C16H22O11

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

Synthesis of substituted porphyrins was written by Cheng, D. O.;LeGoff, Eugene. And the article was included in Tetrahedron Letters in 1977.Application of 2199-49-7 This article mentions the following:

3,4-Disubstituted pyrroles with HCHO and HCl or HBr in EtOH at reflux for several h then standing exposed to air for a few days to several weeks gave porphyrins unsubstituted in the meso positions. E.g., 3,4-dimethylpyrrole with HCHO and HBr gave 76% I (R = R1 = Me). Similarly, 3-acetyl-4-ethylpyrrole gave a mixture of 3 isomers of I (R, R1 = MeCO, Et) which on B2H6 reduction gave I (R = R1 = Et). In the experiment, the researchers used many compounds, for example, Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7Application of 2199-49-7).

Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Application of 2199-49-7

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

Characterization of honey peach (Prunus persica (L.) Batsch) aroma variation and unraveling the potential aroma metabolism mechanism through proteomics analysis under abiotic stress was written by Li, Qianqian;Yang, Shupeng;Zhang, Rong;Liu, Shuyan;Zhang, Chaoyang;Li, Yi;Li, Jianxun. And the article was included in Food Chemistry in 2022.Quality Control of 5-Ethyldihydrofuran-2(3H)-one This article mentions the following:

Honey peach (Prunus persica (L.) Batsch) is a climacteric fruit with short storage period. Generally, the low temperature storage (LTS) technol. is implemented to lessen aroma loss and keep the quality. However, the LTS procedure brings about cold stress issues and affects the aroma metabolism It is essential to unravel the primary aroma and the corresponding metabolism mechanism through key proteins under abiotic stress. In this study, the primary components were characterized under LTS at 1°C during 0 to 40 days. Furthermore, the proteomics anal. was performed to acquire differentially expressed proteins to clarify the underlying metabolism mechanisms of the primary aroma and potential proteins. As a result, four proteins were considered as potential key proteins that associated with fatty acid and amino acid metabolism under cold stress. Addnl., this study provides theor. cornerstones for regulating and improving the quality of honey peach. In the experiment, the researchers used many compounds, for example, 5-Ethyldihydrofuran-2(3H)-one (cas: 695-06-7Quality Control of 5-Ethyldihydrofuran-2(3H)-one).

5-Ethyldihydrofuran-2(3H)-one (cas: 695-06-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Quality Control of 5-Ethyldihydrofuran-2(3H)-one

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

Iodonium Ylides as Carbene Precursors in Rh(III)-Catalyzed C-H Activation was written by Jiang, Yuqin;Li, Pengfei;Zhao, Jie;Liu, Bingxian;Li, Xingwei. And the article was included in Organic Letters in 2020.Formula: C11H20O4 This article mentions the following:

The rhodium(III)-catalyzed coupling of C-H substrates with iodonium ylides has been realized for the efficient synthesis of diverse cyclic skeletons, where the iodonium ylides have been identified as efficient and outstanding carbene precursors. The reaction systems are applicable to both sp² and sp³ C-H substrates under mild and redox-neutral conditions. The catalyst loading can be as low as 0.5 mol % in a gram-scale reaction. Representative products exhibit cytotoxicity toward human cancer cells at nanomolar levels. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Formula: C11H20O4).

Diethyl isobutylmalonate (cas: 10203-58-4) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Formula: C11H20O4

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