Category: ethers-buliding-blocks

Anticancer effects on human pancreatic cancer cells of triterpenoids, polysaccharides and 1,3-β-D-glucan derived from the fruiting body of Antrodia camphorata was written by Lee, Chu-I.;Wu, Chih-Chung;Hsieh, Shu-Ling;Lee, Chun-Lin;Chang, Yueh-Ping;Chang, Chih-Chuan;Wang, Yi-Zhen;Wang, Jyh-Jye. And the article was included in Food & Function in 2014.Synthetic Route of C9H10O4 This article mentions the following:

Antrodia camphorata is a fungus native to Taiwan, and it is considered a precious medicinal agent. We analyzed triterpenoids, polysaccharides and 1,3-β-D-glucan, three major effective components in A. camphorata extracts (ACE). ACE exhibited a selective cytotoxic effect on BxPC-3 human pancreatic cancer cells. ACE markedly inhibited the migration ability of BxPC-3 cells. Treatment of BxPC-3 cells with ACE resulted in the increase of cells in the sub-G1 phase and G2/M phase arrest. Apoptosis was confirmed by validating phosphatidylserine externalization, the observation of characteristic chromatin condensation, and nuclear DNA fragmentation. ACE induced apoptosis in BxPC-3 cells through a mitochondria-dependent pathway by triggering an appropriate balance of bax/bcl-2, cytochrome c release, activation of caspase-9 and -3, and poly(ADP-ribose) polymerase cleavage. ACE shows great therapeutic potential due to its cytotoxic effects against BxPC-3 cells which include inhibiting cell migration and inducing mitochondria-mediated apoptosis. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Synthetic Route of C9H10O4).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Synthetic Route of C9H10O4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

CuCl-catalyzed ortho trifluoromethylation of arenes and heteroarenes with a pivalamido directing group was written by Cai, Shangjun;Chen, Chao;Sun, Zelin;Xi, Chanjuan. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2013.Application In Synthesis of N-(3-Methoxyphenyl)pivalamide This article mentions the following:

The CuCl catalyzed direct trifluoromethylation of sp² C-H bonds has been realized, using the Togni reagent as the CF₃ source. This reaction achieves the goal of regio-selectively converting C-H into C-CF₃ with ecol. and readily available starting materials. In the experiment, the researchers used many compounds, for example, N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3Application In Synthesis of N-(3-Methoxyphenyl)pivalamide).

N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Application In Synthesis of N-(3-Methoxyphenyl)pivalamide

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Structure-Reactivity Relationships on Substrates and Inhibitors of the Lysine Deacylase Sirtuin 2 from Schistosoma mansoni (SmSirt2) was written by Monaldi, Daria;Rotili, Dante;Lancelot, Julien;Marek, Martin;Woessner, Nathalie;Lucidi, Alessia;Tomaselli, Daniela;Ramos-Morales, Elizabeth;Romier, Christophe;Pierce, Raymond J.;Mai, Antonello;Jung, Manfred. And the article was included in Journal of Medicinal Chemistry in 2019.Application of 54916-28-8 This article mentions the following:

The only drug currently available for treatment of the neglected disease Schistosomiasis is Praziquantel, and the possible emergence of resistance makes research on novel therapeutic agents necessary and urgent. To this end, the targeting of Schistosoma mansoni epigenetic enzymes, which regulate the parasitic life cycle, emerged as a promising approach. Due to the strong effects of human sirtuin inhibitors on parasite survival and reproduction, Schistosoma sirtuins were postulated as potential therapeutic targets. In vitro testing of synthetic substrates of S. mansoni sirtuin 2 (SmSirt2) and kinetic experiments on a myristoylated peptide demonstrated lysine long-chain deacylation as an intrinsic SmSirt2 activity in addition to its known deacetylase activity for the first time. Focused in vitro screening of the GSK Kinetobox library and structure-activity relationships of identified hits led to the first SmSirt2 inhibitors with activity in the low micromolar range. Several SmSirt2 inhibitors showed potency against both larval schistosomes (viability) and adult worms (pairing, egg laying) in culture without general toxicity to human cancer cells. In the experiment, the researchers used many compounds, for example, 1-(4-(4-Methoxyphenoxy)phenyl)ethanone (cas: 54916-28-8Application of 54916-28-8).

1-(4-(4-Methoxyphenoxy)phenyl)ethanone (cas: 54916-28-8) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Application of 54916-28-8

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Synthesis of Dihydropyrazoles via Pd-Catalyzed Heterocyclization/Carbonylation Reaction: Development and Parameterization Studies was written by Barboza, Amanda A.;Dantas, Juliana A.;Jardim, Guilherme A. M.;Neto, Attilio C.;Oliveira, Willian X. C.;Gensch, Tobias;Ferreira, Marco A. B.. And the article was included in ChemCatChem in 2022.Recommanded Product: (4-Methoxyphenyl)methanol This article mentions the following:

A Pd-catalyzed heterocyclization/carbonylation cascade reaction of benzenesulfonyl hydrazones and alcs. encompassing the formation of 3 new bonds, affording alkyl 2-(3-aryl-1-tosyl-4,5-dihydro-1H-pyrazol-5-yl)acetates I [R = Me, Et, Bn, etc.; R¹ = i-Pr, Ph, Cy, etc.; R² = Ph, 4-MeC₆H₄, 4-BrC₆H₄, etc.] in moderate to excellent yields and good functional group tolerance was described, comprising a new methodol. for direct access to esterified heterocycles using alcs. as readily available feedstock. Optimization was carried out along with a phosphine/base parameterization study, providing important structure-reactivity insights for pyridine-bases, mono- and bisphosphines. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Recommanded Product: (4-Methoxyphenyl)methanol).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Recommanded Product: (4-Methoxyphenyl)methanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Novel ester derivative of cinnamates with different long alkoxy chain: synthesis, mesomorphic properties, biological evaluation was written by Bhalodiya, Pradip C.;Patel, Hemant N.;Parmar, Tejasvi H.;Sangani, Chetan B.;Rajani, Dhanji P.. And the article was included in Molecular Crystals and Liquid Crystals in 2021.Application In Synthesis of 2-(2-Methoxyethoxy)ethanol This article mentions the following:

A novel series of liquid crystals involving cinnamate-based mesogenic units interlinked between aromatic ester and alkyl bromide were designed and synthesized. The mesomorphic behavior of novel synthesized materials was investigated through a polarizing optical microscope, differential scanning calorimetry, and thermogravimetric anal. (TGA) anal. The lower carbon chain substituted member showed nematic phase while compound possess higher carbon chain exhibited only SmC phase. Thermal stability is determined by TGA anal. All the cinnamate derivatives were screened for their anti-microbial, anti-malarial, and anti-tuberculosis potency. Among them, most of the derivatives exhibited outstanding anti-bacterial and anti-tuberculosis activity. Some derivatives also exhibited potent anti-fungal activity. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Application In Synthesis of 2-(2-Methoxyethoxy)ethanol).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Application In Synthesis of 2-(2-Methoxyethoxy)ethanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Comparative analysis of the PET and ICT sensor properties of 1,8-naphthalimides containing aza-15-crown-5 ether moiety was written by Panchenko, Pavel A.;Fedorov, Yuri V.;Fedorova, Olga A.;Jonusauskas, Gediminas. And the article was included in Dyes and Pigments in 2013.Reference of 66943-05-3 This article mentions the following:

Novel 4-amino- and 4-(acetyl)amino-N-aryl-1,8-naphthalimides containing aza-15-crown-5 ether receptor unit in the N-aryl fragment and at C-4 of the naphthalimide residue were designed and prepared Significant internal charge transfer from electron donating amino or amido group at C-4 of the naphthalene ring to the acceptor carboxyimide moiety as well as photoinduced electron transfer between N-aryl receptor and the naphthalimide fragment was revealed by the UV/Vis absorption spectroscopy and considerable fluorescence quenching. The addition of calcium perchlorate to an acetonitrile solution of naphthalimides with the receptor at imide nitrogen hindered the photoinduced electron transfer process and accordingly restored the quenched fluorescence of the free ligands. In the case of the compound in which the aza-15-crown-5 receptor is located at C-4, the coordination with Ca²⁺ reduced the internal charge transfer interaction in the chromophore and caused a significant blue-shift of the absorption and emission peak. The observed spectral effects were analyzed using PM6 semiempirical calculations Formation of complexes was also confirmed by ¹H NMR spectroscopy. In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Reference of 66943-05-3).

1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Reference of 66943-05-3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Synthesis and Aerobic Oxidation Catalysis of Mesoporous Todorokite-Type Manganese Oxide Nanoparticles by Crystallization of Precursors was written by Koutani, Maki;Hayashi, Eri;Kamata, Keigo;Hara, Michikazu. And the article was included in Journal of the American Chemical Society in 2022.Safety of (4-Methoxyphenyl)methanol This article mentions the following:

The pursuit of a high surface area while maintaining high catalytic performance remains a challenge due to a trade-off relationship between these two features in some cases. In this study, mesoporous todorokite-type manganese oxide (OMS-1) nanoparticles with high sp. surface areas were synthesized in one step by a new synthesis approach involving crystallization (i.e., solid-state transformation) of a precursor produced by a redox reaction between MnO₄^– and Mn²⁺ reagents. The use of a low-crystallinity precursor with small particles is essential to achieve this solid-state transformation into OMS-1 nanoparticles. The sp. surface area reached up to ca. 250 m² g^-1, which is much larger than those (13-185 m² g^-1) for Mg-OMS-1 synthesized by previously reported methods including multistep synthesis or dissolution/precipitation processes. Despite ultrasmall nanoparticles, a linear correlation between the catalytic reaction rates of OMS-1 and the surface areas was observed without a trade-off relationship between particle size and catalytic performance. These OMS-1 nanoparticles exhibited the highest catalytic activity among the Mn-based catalysts tested for the oxidation of benzyl alc. and thioanisole with mol. oxygen (O₂) as the sole oxidant, including highly active β-MnO₂ nanoparticles. The present OMS-1 nanomaterial could also act as a recyclable heterogeneous catalyst for the aerobic oxidation of various aromatic alcs. and sulfides under mild reaction conditions. The mechanistic studies showed that alc. oxidation proceeds with oxygen species caused by the solid, and the high surface area of OMS-1 significantly contributes to an enhancement of the catalytic activity for aerobic oxidation In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Safety of (4-Methoxyphenyl)methanol).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Safety of (4-Methoxyphenyl)methanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

High nitrogen content carbons: Morphological and chemical changes with synthesis temperature and application in lithium-sulfur batteries was written by Arias, Analia Natali;Villarroel-Rocha, Jhonny;Sapag, Karim;Mori, Maria Fernanda;Planes, Gabriel Angel;Tesio, Alvaro Yamil;Flexer, Victoria. And the article was included in Electrochimica Acta in 2020.Application In Synthesis of 2,5,8,11-Tetraoxadodecane This article mentions the following:

The authors present a new two-step synthesis method to prepare N-doped carbons with micro, meso and macroporosity. The authors modified the classical polycondensation of resorcinol-formaldehyde, by adding a large excess of melamine in basic medium. Materials were prepared by varying the maximum carbonization temperature in the range 600-900°, and are denoted NCC-X, where X denotes that maximum temperature NCC-X showed a high N content, ranging from 32.9% to 10.3%. SEM showed macropores in the order of 100-600 nm, with sizes decreasing with temperature, reaching a min. for NCC-800, and then increasing again. N₂ adsorption-desorption isotherms showed micro and mesopores for all samples, with a maximum surface area of 505 m² g^-1 for NCC-800. CO₂ adsorption isotherms showed that all NCC-X materials present ultramicropores. NCC-X were incorporated as host materials for elemental S in Li-S batteries. The increased narrow micropore volume of materials pyrolyzed at higher temperature seems to promote an initial higher cell capacity. Conversely, the much higher N content and the higher amount of N in pyridinic environments were identified as the reasons for the higher cycling stability of the cells prepared with NCC-600-7h and NCC-750. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Application In Synthesis of 2,5,8,11-Tetraoxadodecane).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Application In Synthesis of 2,5,8,11-Tetraoxadodecane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Rhodium-catalyzed oxidative coupling of N-acyl anilines with alkynes using an acylamino moiety as the traceless directing group was written by Geng, Kaijun;Fan, Zhoulong;Zhang, Ao. And the article was included in Organic Chemistry Frontiers in 2016.Application In Synthesis of N-(3-Methoxyphenyl)pivalamide This article mentions the following:

A rhodium-catalyzed oxidative annulation of N-acyl anilines with alkynes was developed by using the acylamino group as a traceless directing group for the first time. Various N-acyl anilines and para- or meta-substituted diphenylacetylenes were well tolerated, and a series of 1,2,3,4-tetrasubstituted naphthalenes were readily synthesized in good to excellent yields. Meanwhile, this method also provided a new strategy for the N-dearylation of N-phenylamides. In the experiment, the researchers used many compounds, for example, N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3Application In Synthesis of N-(3-Methoxyphenyl)pivalamide).

N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Application In Synthesis of N-(3-Methoxyphenyl)pivalamide

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Methods for Preparing Metal Ion Photocages: Application to the Synthesis of CrownCast was written by Kennedy, Daniel P.;Gwizdala, Celina;Burdette, Shawn C.. And the article was included in Organic Letters in 2009.HPLC of Formula: 66943-05-3 This article mentions the following:

Three different synthetic strategies were utilized in the construction of a representative of a novel class of macrocyclic containing o-nitrobenzhydrol group II cation cages I (X = 1-aza-15-crown-5). The binding properties of I and its photoproduct II to several alk. earth metal cations have been studied. In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3HPLC of Formula: 66943-05-3).

1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.HPLC of Formula: 66943-05-3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem