Tag: 100-200

Gorgieva, Selestina; Osmic, Azra; Hribernik, Silvo; Bozic, Mojca; Svete, Jurij; Hacker, Viktor; Wolf, Sigrid; Genorio, Bostjan published their research in International Journal of Molecular Sciences in 2021. The article was titled 《Efficient chitosan/nitrogen-doped reduced graphene oxide composite membranes for direct alkaline ethanol fuel cells》.Recommanded Product: N,N-Dimethylformamide Dimethyl Acetal The article contains the following contents:

Herein, we prepared a series of nanocomposite membranes based on chitosan (CS) and three compositionally and structurally different N-doped graphene derivatives Two-dimensional (2D) and quasi 1D N-doped reduced graphene oxides (N-rGO) and nanoribbons (N-rGONRs), as well as 3D porous N-doped graphitic polyenaminone particles (N-pEAO), were synthesized and characterized fully to confirm their graphitic structure, morphol., and nitrogen (pyridinic, pyrrolic, and quaternary or graphitic) group contents. The largest (0.07%) loading of N-doped graphene derivatives impacted the morphol. of the CS membrane significantly, reducing the crystallinity, tensile properties, and the KOH uptake, and increasing (by almost 10-fold) the ethanol permeability. Within direct alk. ethanol test cells, it was found that CS/N rGONRs (0.07%) membrane (Pmax. = 3.7 mWcm-2) outperformed the pristine CS membrane significantly (Pmax. = 2.2 mWcm-2), suggesting the potential of the newly proposed membranes for application in direct ethanol fuel cells. In the part of experimental materials, we found many familiar compounds, such as 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.Typically the presence of an amine functional group is deduced by a combination of techniques, including mass spectrometry as well as NMR and IR spectroscopies. 1H NMR signals for amines disappear upon treatment of the sample with D2O. In their infrared spectrum primary amines exhibit two N-H bands, whereas secondary amines exhibit only one.Recommanded Product: N,N-Dimethylformamide Dimethyl Acetal

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

《A phosphoryl radical-initiated Atherton-Todd-type reaction under open air》 was written by Ou, Yingcong; Huang, Yuanting; He, Zhenlin; Yu, Guodian; Huo, Yanping; Li, Xianwei; Gao, Yang; Chen, Qian. Name: m-Methoxyphenol And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2020. The article conveys some information:

A phosphoryl radical-initiated Atherton-Todd-type reaction using air as the radical initiator and CHCl3 as the halogenating reagent for the phosphorylation of alcs., phenols, and amines has been developed. This novel transformation provides a highly efficient route to important phosphinates, phosphinic amides, and phosphoramidates in up to 99% yield with a broad substrate scope under very mild conditions (48 examples). In the experiment, the researchers used m-Methoxyphenol(cas: 150-19-6Name: m-Methoxyphenol)

m-Methoxyphenol(cas: 150-19-6) may be used as an analytical standard for the determination of the analyte in wine, coffee beans, wood samples, and mainstream smoke by gas chromatography (GC) based techniques.Name: m-Methoxyphenol

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

The author of 《Enantioselective dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived Morita-Baylis-Hillman carbonates》 were Yang, Xin-He; Li, Jian-Ping; Wang, Dong-Chao; Xie, Ming-Sheng; Qu, Gui-Rong; Guo, Hai-Ming. And the article was published in Chemical Communications (Cambridge, United Kingdom) in 2019. COA of Formula: C8H8O3 The author mentioned the following in the article:

The phosphine-catalyzed asym. dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived Morita-Baylis-Hillman (MBH) carbonates or allenoate was developed. The reaction with MBH carbonates resulted in a series of cyclopentabenzofurans containing three contiguous stereocenters with good to high yields, diastereoselectivities and enantioselectivities. The use of allenoate also gave the target product with moderate enantioselectivity. In the experiment, the researchers used many compounds, for example, 2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3COA of Formula: C8H8O3)

2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3) is the main component of root bark essential oil of Periploca sepium Bunge. It is a potential tyrosinase inhibitor present in African medicinal plants. 2-Hydroxy-4-methoxybenzaldehyde was used in the synthesis of Schiff base ligand.COA of Formula: C8H8O3

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

Name: 1,4-Diethynyl-2,5-dimethoxybenzeneOn October 28, 2014 ,《Natural α-Amino Acid-Functionalized Poly(phenyleneethynylene)s (PPEs): Synthesis and Chiroptical Characterization of Aggregate States》 was published in Macromolecules (Washington, DC, United States). The article was written by Resta, Claudio; Pescitelli, Gennaro; Di Bari, Lorenzo. The article contains the following contents:

The synthesis of several novel poly(phenyleneethynylene)s (PPEs) functionalized with different natural α-amino acids Me esters has been achieved through Cassar-Heck-Sonogashira reaction. Five different derivatives have been prepared varying the nature of the amino acid (Gly, Leu, N-Me Leu, Phe, and Val), and their aggregation behavior has been investigated by means of UV-vis absorption, CD, and fluorescence spectroscopies in different conditions of aggregation. ECD measurements provided unique information about the structural organization of the aggregates dispersed in solution and as thin films. The effects of the nature of the amino acidic moiety, the consequences of chirality, and the role played by intermol. hydrogen bonds have been elucidated. The results came from multiple reactions, including the reaction of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Name: 1,4-Diethynyl-2,5-dimethoxybenzene)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however. Name: 1,4-Diethynyl-2,5-dimethoxybenzene

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

COA of Formula: C12H10O2On September 22, 2009 ,《Synthesis and Photostability of Poly(p-phenylenevinylene-borane)s》 was published in Macromolecules (Washington, DC, United States). The article was written by Nagai, Atsushi; Murakami, Takuya; Nagata, Yuuya; Kokado, Kenta; Chujo, Yoshiki. The article contains the following contents:

Electron donor-acceptor poly(p-phenylenevinyleneborane)s (PPVBs) with various side groups, were prepared by hydroboration polymerization of 2,4,6-Triisopropylphenylborane and diethynylbenzene monomers and the photooxidative stability was studied. The obtained polymers emitted blue-to-green light at 437-505 nm and the quantum yield was FF = 0.3-0.5. The photostability of the polymers was measured under continuous UV irradiation using a UV lamp. The stability was a function of electron d. of substituent groups in monomers, except for a trifluoromethyl-containing monomer. The results came from multiple reactions, including the reaction of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6COA of Formula: C12H10O2)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) 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.COA of Formula: C12H10O2

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

《Hydrazide-Catalyzed Polyene Cyclization: Asymmetric Organocatalytic Synthesis of cis-Decalins》 was published in Angewandte Chemie, International Edition in 2020. These research results belong to Plamondon, Samuel J.; Warnica, Josephine M.; Kaldre, Dainis; Gleason, James L.. Quality Control of (3-Methoxy-2-methylphenyl)methanol The article mentions the following:

Polyene cyclizations offer rapid entry into terpenoid ring systems. Although enantioselective cyclizations of (E)-polyenes to form trans-decalin ring systems are well precedented, highly enantioselective cyclizations of (Z)-polyenes to form the corresponding cis-decalins have not been reported. Here, we describe the first application of iminium catalysis to the initiation of polyene cyclizations. Et 1,2-diazepane-1-carboxylate catalyzes the cyclization of polyenes bearing enal initiators. Moreover, chiral bicyclic hydrazides catalyze the cyclizations of (Z)-polyene substrates to form cis-decalins with enantioselectivities of up to 97:3 er. DFT calculations suggest the catalysts promote the reaction by stabilizing pos. charge as it develops during the bicyclization.(3-Methoxy-2-methylphenyl)methanol(cas: 33797-34-1Quality Control of (3-Methoxy-2-methylphenyl)methanol) was used in this study.

(3-Methoxy-2-methylphenyl)methanol(cas: 33797-34-1) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. Quality Control of (3-Methoxy-2-methylphenyl)methanol They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however.

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

Kundu, Samrat; Banerjee, Ankush; Pal, Shyam Chand; Ghosh, Meghna; Maji, Modhu Sudan published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Cascade annulative π-extension for the rapid construction of carbazole based polyaromatic hydrocarbons》.Recommanded Product: 2-(Benzyloxy)acetaldehyde The article contains the following contents:

A Bronsted acid catalyzed cascade benzannulation strategy for the one-pot synthesis of densely populated poly-aryl benzo[a]carbazole architectures is disclosed from easily affordable fundamental commodities. The efficacy of this technique was further validated via the concise synthesis of structurally unique carbazole based poly-aromatic hydrocarbons. Furthermore, the photo-phys. properties of the synthesized compounds are thoroughly investigated. The experimental part of the paper was very detailed, including the reaction process of 2-(Benzyloxy)acetaldehyde(cas: 60656-87-3Recommanded Product: 2-(Benzyloxy)acetaldehyde)

2-(Benzyloxy)acetaldehyde(cas: 60656-87-3) may be used in the following syntheses: (3S,5S)-methyl 6-benzyloxy-3,5-dihydroxyhexanoate ,(S)-5-benzyloxy-4-hydroxypentan-2-one, myxothiazols.Recommanded Product: 2-(Benzyloxy)acetaldehyde

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

《Micropropagation, encapsulation, and conservation of Decalepis salicifolia, a vanillin isomer containing medicinal and aromatic plant》 was published in In Vitro Cellular & Developmental Biology: Plant in 2020. These research results belong to Rodrigues, Vereena; Kumar, Amit; Gokul, Sivaraman; Verma, Ram S.; Rahman, Laiq ur; Sundaresan, Velusamy. SDS of cas: 673-22-3 The article mentions the following:

Abstract: An efficient in vitro propagation and synthetic seed production protocol was established for the conservation of Decalepis salicifolia (Bedd. ex Hook.f.) Venter, an endemic and critically endangered ethnomedicinal species. Axillary bud proliferation was found to be best in 11.1μM BAP with an average of 3.5 ± 0.06 shoots per explant. Shoot tip and nodal explants were encapsulated in sodium alginate and their regeneration was achieved following storage at 4°C up to 12 wk. Successful rooting was obtained in modified MS medium with low nitrate and high sucrose concentration Quarter strength MS media containing 2.5 mM each of NH4NO3 and KNO3 along with 8% sucrose produced an average number of 12.4 ± 1.18 roots with an average length of 4.3 ± 0.08 cm. The in vitro derived rooted plants were successfully hardened (92.8%) and established in field with 100.0% survival rate. Inter-simple sequence repeat (ISSR) markers proved the genetic fidelity among the in vitro grown plant showing 99.5% similarity with the mother plant. Micropropagation derived acclimatized plants produced 2-hydroxy-4-methoxybenzaldehyde in amounts similar to seed-derived field-grown plants of the same age. The in vitro propagation protocol developed for D. salicifolia can be utilized to reduce exploitation pressure from their natural habitats and augment ecorestoration, conservation, and cultivation of this critically endangered and industrially valuable plant. In the experiment, the researchers used many compounds, for example, 2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3SDS of cas: 673-22-3)

2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3) is employed in the synthesis of Schiff base ligand. It is applied as a reactant in the synthesis of LPA1R antagonists used in the inhibition of LPA-induced proliferation and contraction of normal human lung fibroblasts. Also used in the synthesis of tyrosine kinase 6 proteinase inhibitors.SDS of cas: 673-22-3

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

Category: ethers-buliding-blocksOn September 30, 2011 ,《Synthesis, characterization, and properties of conjugated binuclear bis-terpyridyl ruthenium complexes》 was published in Transition Metal Chemistry (Dordrecht, Netherlands). The article was written by Jin, Guo Jun; Chen, Gang; Xia, Jian Long; Yin, Jun; Yu, Guang-Ao; Liu, Sheng Hua. The article contains the following contents:

A series of binuclear bis-terpyridyl ruthenium complexes with different substituents, [Ru2(L)2(μ-La)](PF6)4 (L = 4′-(p-tolyl)-4,4”-dicarboxyterpyridine, La = 1,4-bis(4-(4,4”-dicarboxyterpyrid-4′-yl)phenylethynyl)-2,5-R2-benzene, R = H, Me, OMe, OC6H13) were synthesized and characterized by physicochem. and spectroscopic methods. The UV/visible and fluorescence spectra indicated that the non-substituted binuclear bis(terpyridyl) ruthenium(II) complex has similar properties to those with electron-donating groups such as Me and alkoxyl on the organic conjugated bridge benzene units. Furthermore, similar oxidation-reduction potentials were observed according to their electrochem. properties in CH2Cl2 solution In addition to this study using 1,4-Diethynyl-2,5-dimethoxybenzene, there are many other studies that have used 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Category: ethers-buliding-blocks) was used in this study.

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Category: ethers-buliding-blocksAlthough ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly.

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

COA of Formula: C7H7BrOIn 2022 ,《Visible light-induced deoxygenation/cyclization of salicylic acid derivatives and aryl acetylene for the synthesis of flavonoids》 was published in Chemical Communications (Cambridge, United Kingdom). The article was written by Fan, Xiaodong; He, Chaoyin; Ji, Mengmeng; Sun, Xinhui; Luo, Huan; Li, Chao; Tong, Huixin; Zhang, Weiya; Sun, Zhizhong; Chu, Wenyi. The article contains the following contents:

A visible-light-induced photocatalytic strategy for the synthesis of flavonoids was developed through the deoxygenative/cyclization reaction of salicylic acid derivatives with aryl acetylene using di-Ph sulfide as an O-transfer reagent. Based on the controlled experiments, the mechanism of visible-light-induced free radical coupling cyclization was proposed. The protocol obtained 51 flavonoids in good yields and was successfully applied to the synthesis of some natural flavones. In the part of experimental materials, we found many familiar compounds, such as 1-Bromo-3-methoxybenzene(cas: 2398-37-0COA of Formula: C7H7BrO)

1-Bromo-3-methoxybenzene(cas: 2398-37-0) can be used in chemical reaction as intermediates to obtain target materials such as dyes, pharmaceuticals, perfumes, photoinitiators and agrochemicals.COA of Formula: C7H7BrO

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