Month: October 2022

In 2019,Methods and Protocols included an article by Martins, Ines S.; Coelho, Jaime A. S.. Application In Synthesis of N,N-Dimethylformamide Dimethyl Acetal. The article was titled 《Solvent-free synthesis of 2,5-bis((dimethylamino)methylene)cyclopentanone》. The information in the text is summarized as follows:

The important feature in synthesis of ketocyanine dyes precursor 2,5-bis((dimethylamino)methylene)cyclopentanone I through organocatalyzed condensation of cyclopentanone and N,N-dimethylformamide di-Me acetal was removal of methanol produced during the reaction. By studying reaction profile, in particular selectivity for formation of mono- and bis-condensation products, a high yield of desired product could be obtained through an operationally simple and solvent-free protocol.N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5Application In Synthesis of N,N-Dimethylformamide Dimethyl Acetal) was used in this study.

N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5) 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.Application In Synthesis of N,N-Dimethylformamide Dimethyl Acetal

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

In 2019,Bioorganic Chemistry included an article by Eldehna, Wagdy M.; Abo-Ashour, Mahmoud F.; Berrino, Emanuela; Vullo, Daniela; Ghabbour, Hazem A.; Al-Rashood, Sara T.; Hassan, Ghada S.; Alkahtani, Hamad M.; Almehizia, Abdulrahman A.; Alharbi, Amal; Abdel-Aziz, Hatem A.; Supuran, Claudiu T.. Name: N,N-Dimethylformamide Dimethyl Acetal. The article was titled 《SLC-0111 enaminone analogs, 3/4-(3-aryl-3-oxopropenyl) aminobenzenesulfonamides, as novel selective subnanomolar inhibitors of the tumor-associated carbonic anhydrase isoform IX》. The information in the text is summarized as follows:

SLC-0111, an ureido substituted benzenesulfonamide, is a selective carbonic anhydrase (CA, EC 4.2.1.1) IX inhibitor that is currently in Phase I/II clin. trials for the treatment of advanced hypoxic tumors complicated with metastases. Herein we report the synthesis of two series of 3/4-(3-aryl-3-oxopropenyl) aminobenzenesulfonamides 5a-i and 6a-j as SLC-0111 enaminone congeners. The prepared enaminones were in vitro investigated as inhibitors of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1) isoforms hCA I, II, IV and IX, using a stopped-flow CO2 hydrase assay. All these isoforms were inhibited by the enaminones reported here in variable degrees. The target tumor-associated isoform hCA IX was undeniably the most affected one (KIs: 0.21-7.1 nM), with 6- to 21-fold enhanced activity than SLC-0111 (KI = 45 nM). All the prepared enaminones displayed interesting selectivity towards hCA IX over hCA I (SI: 32 – >35714), hCA II (SI: 2 – 1689) and hCA IV (SI: 11 – >45454). Of particular interest, bioisosteric replacement of Ph tail with the bulkier 2-naphthyl tail, sulfonamide 6h, achieved the higher II/IX selectivity herein reported with SI of 1689. After reading the article, we found that the author used N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5Name: N,N-Dimethylformamide Dimethyl Acetal)

N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5) 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.Name: N,N-Dimethylformamide Dimethyl Acetal

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

The author of 《Graphene Oxide Incorporated Strontium Nanoparticles as a Highly Efficient and Green Acid Catalyst for One-Pot Synthesis of Tetramethyl-9-aryl-hexahydroxanthenes and 13-Aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraones Under Solvent-Free Conditions》 were Mousavi, Seyyed Rasul; Rashidi Nodeh, Hamid; Zamiri Afshari, Elham; Foroumadi, Alireza. And the article was published in Catalysis Letters in 2019. Category: ethers-buliding-blocks The author mentioned the following in the article:

An efficient, inexpensive and recyclable graphene oxide/strontium nanocatalyst was synthesized and applied in a pseudo three-component, one-pot cyclocondensation of aromatic aldehydes and dimedone/lawsone to afford the corresponding 3,3,6,6-tetramethyl-9-aryl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-diones and 13-aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraones (e.g., I and II, resp.) in high yields under solvent-free conditions. To the best of our knowledge, there are no literature reports on applying graphene oxide/strontium as a nanocatalyst for xanthene derivatives synthesis. The key potential benefits of the present method are including high yields, short reaction time, easy workup, recyclability of catalyst and ability to tolerate a variety of functional groups which gives economical as well as ecol. rewards. The nanocatalyst easily separated from the reaction mixture easily by applying an external magnet and reused at least six times without noticeable degradation in catalytic activity.2-Methoxybenzaldehyde(cas: 135-02-4Category: ethers-buliding-blocks) was used in this study.

2-Methoxybenzaldehyde(cas: 135-02-4) is used as a flavor agent in foods including nonalcoholic/alcoholic beverages, baked goods, chewing gum, confections, frozen dairy, fruit ices, hard/soft candy, instant coffee, tea, Jams, jellies, and milk products. It also has been used to obtain good enantioselectivities using Cu(OAc)(2)-bis(oxazolines) via hydrogen bonding in asymmetric Henry reaction.Category: ethers-buliding-blocks

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

The author of 《Kinetic and Theoretical Study of the Atmospheric Aqueous-Phase Reactions of OH Radicals with Methoxyphenolic Compounds》 were He, Lin; Schaefer, Thomas; Otto, Tobias; Kroflic, Ana; Herrmann, Hartmut. And the article was published in Journal of Physical Chemistry A in 2019. Name: m-Methoxyphenol The author mentioned the following in the article:

Methoxyphenols, which are emitted through biomass burning, are an important species in atm. chem. In the present study, temperature-dependent aqueous-phase OH radical reactions of six methoxyphenols and two related phenols have been investigated through laser flash photolysis and the d. functional theory. The rate constants obtained were in a range of (1.1-1.9) × 1010 L mol-1 s-1 with k(3-MC) > k(Cre) ≈ k(Syr) ≈ k(MEP) > k(Res) > k(3-MP) > k(2-EP) ≈ k(2-MP). We derived the parameters of these reactions from the obtained T-dependent rate constants and found a mean Arrhenius activation energy of 16.9 kJ mol-1. The diffusion rate constants were calculated for each case and compared to the measured ones. Generally, the rate constants are found to be close to fully diffusion-controlled (kdiff = (1.4-1.5) × 1010 L mol-1 s-1 for all reactions). A structure-function relationship was established through the measurement result, which could be used for predicting unknown rate constants of other phenolic compounds All of these findings are expected to enhance the predictive capabilities of models, such as the chem. aqueous-phase radical mechanism. In the part of experimental materials, we found many familiar compounds, such as m-Methoxyphenol(cas: 150-19-6Name: m-Methoxyphenol)

m-Methoxyphenol(cas: 150-19-6) may be used in synthesis of:C(4) symmetric calix[4]resorcinarene, 2-nitroso-5-methoxyphenol, 6-methoxy-2(3H)-benzoxazoloneName: m-Methoxyphenol

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

The author of 《Jet-cooled rovibrational spectroscopy of methoxyphenols using two complementary FTIR and QCL based spectrometers》 were Asselin, P.; Bruckhuisen, J.; Roucou, A.; Goubet, M.; Martin-Drumel, M.-A.; Jabri, A.; Belkhodja, Y.; Soulard, P.; Georges, R.; Cuisset, A.. And the article was published in Journal of Chemical Physics in 2019. Safety of m-Methoxyphenol The author mentioned the following in the article:

Methoxyphenols (MPs) are a significant component of biomass burning emissions which mainly exists in our atm. in the gas phase where they contribute to the formation of secondary organic aerosols (SOAs). Rovibrational spectroscopy is a promising tool to monitor atm. MPs and infer their role in SOA formation. In this study, we bring a new perspective on the rovibrational anal. of MP isomers by taking advantage of two complementary devices combining jet-cooled environments and absorption spectroscopy: the Jet-AILES and the SPIRALES setups. Based on Q-branch frequency positions measured in the Jet-AILES Fourier-transform IR (FTIR) spectra and guided by quantum chem. calculations, we propose an extended vibrational and conformational anal. of the different MP isomers in their fingerprint region. Some modes such as far-IR out-of-plane -OH bending or mid-IR in-plane -CH bending allow us to assign individually all the stable conformers. Finally, using the SPIRALES setup with three different external cavity quantum cascade laser sources centered on the 930-990 cm-1 and the 1580-1690 cm-1 ranges, it was possible to proceed to the rovibrational anal. of the ν18 ring in-plane bending mode of the MP meta isomer providing a set of reliable excited state parameters, which confirms the correct assignment of two conformers. Interestingly, the observation of broad Q-branches without visible P- and R-branches in the region of the C-C ring stretching bands was interpreted as being probably due to a vibrational perturbation. These results highlight the complementarity of broadband FTIR and narrowband laser spectroscopic techniques to reveal the vibrational conformational signatures of atm. compounds over a large IR spectral range. (c) 2019 American Institute of Physics. The experimental process involved the reaction of m-Methoxyphenol(cas: 150-19-6Safety of m-Methoxyphenol)

m-Methoxyphenol(cas: 150-19-6) may be used in synthesis of:C(4) symmetric calix[4]resorcinarene, 2-nitroso-5-methoxyphenol, 6-methoxy-2(3H)-benzoxazoloneSafety of m-Methoxyphenol

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

The author of 《Phenyl Disulfide Additive for Solution-Mediated Carbon Dioxide Utilization in Li-CO2 Batteries》 were Pipes, Robert; Bhargav, Amruth; Manthiram, Arumugam. And the article was published in Advanced Energy Materials in 2019. Reference of 1,2-Diphenyldisulfane The author mentioned the following in the article:

Ph disulfide (PDS) is employed as an electrolyte additive in lithium-carbon dioxide (Li-CO2) batteries to allow for a solution-mediated carbon dioxide reduction pathway. Thiophenolate anions, generated via electrochem. reduction of PDS, act as CO2 capture agents by forming the adduct S-Ph carbonothioate (SPC-) in solution A mechanism of SPC–mediated CO2 capture and utilization is proposed and supported via carbon-13 NMR spectroscopy and Fourier-transform IR spectroscopy. Reversible formation and decomposition of lithium carbonate and amorphous carbon during cycling, facilitated by the solution-mediated pathway, are demonstrated with an array of characterization techniques. Li-CO2 batteries employing the PDS additive show vastly improved capacity, energy efficiency, and cycle life. The enhanced Li-CO2 battery performance offered by the proposed solution-mediated reaction pathway offers a compelling step forward in the pursuit of reversible CO2 utilization.1,2-Diphenyldisulfane(cas: 882-33-7Reference of 1,2-Diphenyldisulfane) was used in this study.

1,2-Diphenyldisulfane(cas: 882-33-7) belongs to ethers.Ethers do have nonbonding electron pairs on their oxygen atoms, and they 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.Reference of 1,2-Diphenyldisulfane

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

《Synthesis and biological evaluation of berberine derivatives as a new class of broad-spectrum antiviral agents against Coxsackievirus B》 was published in Bioorganic Chemistry in 2020. These research results belong to Zeng, Qing-Xuan; Wang, Hui-Qiang; Wei, Wei; Guo, Ting-Ting; Yu, Lian; Wang, Yan-Xiang; Li, Yu-Huan; Song, Dan-Qing. Quality Control of tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate The article mentions the following:

A series of novel berberine (BBR) analogs were prepared and tested for their antiviral potencies against six different genotype Coxsackievirus B (CVB1-6) strains, taking BBR core for structural modification. Structure-activity relationship (SAR) research revealed that introduction of a primary amine through a linker at position 3 might be beneficial for both antiviral activity and safety. Compound 14c displayed most promising inhibitory potency with IC50 values of 3.08-9.94μM against tested CVBs 2-6 strains and satisfactory SI value of 34.3 on CVB3, better than that of BBR. Also, 14c could inhibit CVB3 replication through down-regulating the expression of VP1 protein and VP1 RNA. The mechanism revealed that 14c could suppress host components JNK-MAPK, ERK-MAPK and p38-MAPK activation. Therefore, BBR derivatives were considered to be a new class of anti-CVB agents with an advantage of broad-spectrum anti-CVB potency. In the experimental materials used by the author, we found tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6Quality Control of tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate)

tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6) belongs to ethers.The C-O bonds that comprise simple ethers are strong. They are unreactive toward all but the strongest bases. Although generally of low chemical reactivity, they are more reactive than alkanes. Quality Control of tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate

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

Hirata, Shuichi; Osako, Takao; Uozumi, Yasuhiro published their research in Helvetica Chimica Acta in 2021. The article was titled 《Palladium-Catalyzed Aminocarbonylation of Aryl Halides with N,N-Dialkylformamide Acetals》.Recommanded Product: N,N-Dimethylformamide Dimethyl Acetal The article contains the following contents:

Herein, a protocol for the palladium-catalyzed aminocarbonylation of aryl halides using less-toxic formamide acetals as bench-stable aminocarbonyl sources under neutral conditions has been developed. Various aryl (including heteroaryl) halides reacted with N,N-dialkylformamide acetals in the presence of a catalytic amount of tris(dibenzylideneacetone)dipalladium(0)-chloroform adduct and xantphos to give the corresponding aromatic carboxamides at 90-140°C without any activating agents or bases in up to quant. chem. yield. This protocol was applied to aryl bromides, aryl iodides and a triflate, as well as to relatively less-reactive aryl chlorides. A wide range of functionalities on the aromatic ring of the substrates was tolerated under the aminocarbonylation conditions. The catalytic aminocarbonylation was used to prepare the insect repellent N,N-diethyl-3-methylbenzamide as well as a synthetic intermediate of the dihydrofolate reductase inhibitor triazinate. The experimental process involved the reaction of N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5Recommanded Product: N,N-Dimethylformamide Dimethyl Acetal)

N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.Recommanded Product: N,N-Dimethylformamide Dimethyl Acetal

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

Hiba, K.; Sreekumar, K. published their research in Reactive & Functional Polymers in 2021. The article was titled 《Multi- arm dendronized polymer as a unimolecular micelle: Synthesis, characterization and application as organocatalyst in the synthesis of N-unsubstituted 1,2,3-triazoles》.Electric Literature of C8H8O2 The article contains the following contents:

The present work reports dendronized polymer based catalysis in which the dendritic cavity and surface functional groups are the reactive centers due to the formation of dendritic unimol. micelle in aqueous medium. First generation amine functionalized tris(hydroxymethyl)propane initiated polyepichlorohydrin cored dendronized polymer TMP-PECH-Amine-G1 was synthesized and properly characterized with different anal. techniques. High functional group capacity, thermal stability and good water solubility are the eye-catching features of the TMP-PECH-Amine-G1 catalyst. The catalytic activity of TMP-PECH-Amine-G1 was studied by synthesizing 4-aryl-1H-1,2,3-triazoles I (R = H, 3-Cl, 4-N(CH3)2, 3,4-(OMe)2, etc.) by one pot condensation reaction of aromatic aldehydes RCHO, nitromethane and sodium azide. The synthesized catalyst offered high yield of products with low catalyst loading in green reaction media without the presence of any external additives. The catalyst was regenerated for six cycles of reaction without substantial loss in activity. This is the first reported method where homogeneous amine functionalized dendronized polymer was used as an organo catalyst for the synthesis of 4-substituted triazoles I. In the part of experimental materials, we found many familiar compounds, such as 2-Methoxybenzaldehyde(cas: 135-02-4Electric Literature of C8H8O2)

2-Methoxybenzaldehyde(cas: 135-02-4) is used as a flavor agent in foods including nonalcoholic/alcoholic beverages, baked goods, chewing gum, confections, frozen dairy, fruit ices, hard/soft candy, instant coffee, tea, Jams, jellies, and milk products. It also has been used to obtain good enantioselectivities using Cu(OAc)(2)-bis(oxazolines) via hydrogen bonding in asymmetric Henry reaction.Electric Literature of C8H8O2

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

Yin, Jie; Zhang, Jinrui; Wang, Chao; Lv, Naixia; Jiang, Wei; Liu, Hui; Li, Hongping; Zhu, Wenshuai; Li, Huaming; Ji, Hongbing published their research in Journal of Molecular Liquids in 2021. The article was titled 《Theoretical insights into CO2/N2 selectivity of the porous ionic liquids constructed by ion-dipole interactions》.HPLC of Formula: 33100-27-5 The article contains the following contents:

Porous liquids, a new class of materials, containing solid pores and liquid properties, have greatly aroused attention. In terms of gas absorption, porous liquids exhibit excellent advantages. Nevertheless, a variety of reports still lack the understanding of its absorption mechanism at the mol. level. Herein, we have figured out the factors contributing to the formation of porous liquids made of porous organic cages that can be dissolved in the crown ether, and the absorption mechanism of carbon dioxide, as well as CO2/N2 selectivity. Through charge and Wiberg index anal., the results show that crown ethers can interact with alkali metals to form alkali metal complexes by ion-dipole interactions, the dominant driving force of which is electrostatic interaction rather than coordination effect. Besides, the metal complexes should be regarded as a whole entity, which increases the steric hindrance of the cations and greatly reduces the probability of the crown ether blocking the cavity. The porous organic cage does provide unoccupied pores for gas storage. Furthermore, compared with N2, cages prefer to absorb CO2 mainly through hydrogen bonding. It is hoped that this work can facilitate the design and synthesis of porous liquids for gas absorption and selectivity. The results came from multiple reactions, including the reaction of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5HPLC of Formula: 33100-27-5)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. HPLC of Formula: 33100-27-5

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