Tag: M.W=50-100

Zhang, Yan published the artcileCu-Catalyzed carbamoylation versus amination of quinoline N-oxide with formamides, Category: amides-buliding-blocks, the main research area is copper catalyzed carbamoylation amination quinoline nitrogen oxide formamide; carbamoyl amino quinoline preparation cross dehydrogenative coupling radical mechanism.

An efficient, direct carbamoylation and amination of quinoline N-oxides with formamides to access 2-carbamoyl and 2-amino quinolines has been developed through copper-catalyzed C-C and C-N bond formations via cross-dehydrogenative coupling reactions. The reaction proceeds smoothly over a broad range of substrates with excellent functional group tolerance under mild conditions. Mechanistic studies suggest that the reaction is initiated by formamide radical or decarbonylative aminyl radical formation in the presence of TBHP, according to the different substituent on the N atom of formamide.

Organic & Biomolecular Chemistry published new progress about Amination. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Category: amides-buliding-blocks.

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

Yang, Chu published the artcileAmination of Aromatic Halides and Exploration of the Reactivity Sequence of Aromatic Halides, HPLC of Formula: 123-39-7, the main research area is amination aromatic halide DMF amine reactivity.

A base-promoted amination of aromatic halides has been developed using a limited amount of DMF (DMF) or amine as an amino source. Various aryl halides, including F, Cl, Br, and I, have been successfully aminated in good to excellent yields. Although the amination of aromatic halides with amines or DMF is usually considered as an aromatic nucleophilic substitution (SNAr) process, and the reactivity of an aromatic halide is F > Cl > Br > I, the reactivity of aromatic halides in this system was found to be I > Br ≈ F > Cl. This protocol also showed a good regioselectivity for multihalogenated aromatics This protocol is valuable for industrial application due to the simplicity of operation, the unrestricted availability of amino sources and aromatic halides, transition metal-free conditions, no requirement for solvent, and scalability.

Journal of Organic Chemistry published new progress about Amination. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, HPLC of Formula: 123-39-7.

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

Ellis, Ryan G. published the artcileHybrid Ligand Exchange of Cu(In,Ga)S2 Nanoparticles for Carbon Impurity Removal in Solution-Processed Photovoltaics, Recommanded Product: N-Methylformamide, the main research area is ligand exchange copper indium gallium sulfide nanoparticle solar cell.

The solution processing of Cu(In,Ga)(S,Se)2 photovoltaics from colloidal nanoparticles has long suffered from deleterious carbonaceous residues originating from long chain native ligands. This impurity carbon has been observed to hinder grain formation during selenization and leave a discrete residue layer between the absorber layer and the back contact. In this work, organic and inorganic ligand exchanges were investigated to remove tightly bound native oleylamine ligands from Cu(In,Ga)S2 nanoparticles, thereby removing the source of carbon contamination. However, incomplete ligand removal, poor colloidal stability, and/or selective metal etching were observed for these methods. As such, an exhaustive hybrid organic/inorganic ligand exchange was developed to bypass the limitations of individual methods. A combination of microwave-assisted solvothermal pyridine ligand stripping followed by inorganic capping with diammonium sulfide was developed and yielded greater than 98% removal of native ligands via a rapid process. Despite the aggressive ligand removal, the nanoparticle stoichiometry remained largely unaffected when making use of the hybrid ligand exchange. Furthermore, highly stable colloidal ink formulations using nontoxic DMSO were developed, supporting stable nanoparticle mass concentrations exceeding 200 mg/mL. Scalable blade coating of the ligand-exchanged nanoparticle inks yielded remarkably smooth and microcrack free films with an RMS roughness less than 7 nm. Selenization of ligand-exchanged nanoparticle films afforded substantially improved grain growth as compared to conventional nonligand-exchanged methods, yielding an absolute improvement in device efficiency of 2.8%. Hybrid ligand exchange nanoparticle-based devices reached total area power conversion efficiencies of 12.0%, demonstrating the feasibility and promise of ligand-exchanged colloidal nanoparticles for the solution processing of Cu(In,Ga)(S,Se)2 photovoltaics.

Chemistry of Materials published new progress about Annealing. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Recommanded Product: N-Methylformamide.

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

Fan, Xuelin published the artcileHigh-performance ultra-short channel field-effect transistor using solution-processable colloidal nanocrystals, Recommanded Product: N-Methylformamide, the main research area is ultrashort channel field effect transistor solution processable colloidal nanocrystal.

The authors demonstrate high-mobility solution-processed inorganic field-effect transistors (FETs) with ultra-short channel (USC) length using semiconductor CdSe nanocrystals (NCs). Capping of the NCs with hybrid inorganic-organic CdCl3–butylamine ligands enables coarsening of the NCs during annealing at a moderate temperature, resulting in the devices having good transport characteristics with electron mobilities in the saturation regime reaching 8 cm2 V-1 s-1. Solution-based processing of the NCs and fabrication of thin films involve neither harsh conditions nor the use of hydrazine. Employing photolithog. methods, the authors fabricated FETs with a vertical overlap of source and drain electrodes to achieve a submicrometer channel length. Because of a short channel length, the FETs show a normalized transconductance of 4.2 m V-1 s-1 with a high on/off ratio of 105.

Journal of Physical Chemistry Letters published new progress about Annealing. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Recommanded Product: N-Methylformamide.

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

Li, Ming-Jun published the artcileThe deleterious effects of N,N-dimethylformamide on liver: A mini-review, COA of Formula: C2H5NO, the main research area is review liver cell proliferation differentiation apoptosis DMF; Cytochrome P4502E1; Hepatotoxicity; N,N-dimethylformamide; N-methylformamide; Occupational exposure limit; Oxidative stress.

N,N-dimethylformamide (DMF) is a versatile solvent with wide industrial applications. Evidences from animal studies and occupational poisoning cases have clearly demonstrated that DMF exposure can lead to different degrees of liver damage. It is noteworthy that DMF below the threshold limit value (TLV) may also cause liver injury in some sensitive populations. Unfortunately, the underlying mechanisms by which DMF induces hepatotoxicity remain largely unknown, despite considerable attention has been drawn to the hepatotoxic effects of DMF. Although some pilot studies have provided some evidences supporting the involvement of oxidative stress, the disturbance of gut microbiota and calcium homeostasis, etc, the causal roles of these factors on the onset of DMF-induced hepatotoxicity need to be confirmed. This article reviews the current knowledge about the deleterious effects of DMF on the liver.

Chemico-Biological Interactions published new progress about Apoptosis. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, COA of Formula: C2H5NO.

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

Iwasaki, Machio published the artcileE.S.R. spectra of γ-irradiated polycrystalline powders of some fluorine-containing compounds, Product Details of C2H3F2NO, the main research area is .

The powder spectra of γ-irradiated salts and amides of some fluorinated acids were interpreted, based on the spectral shapes of the α-F hyperfine-coupling line. Because of the large anisotropy of the α-F coupling tensor, it was possible to observe the shoulders corresponding to the maximum principal value of the coupling tensor. The separation between the wing patterns and the wing hyperfine structures made it possible to identify the radical species produced. The probable radicals were the ones formed by the removal of the atoms attached to the α C atom.

Journal of Chemical Physics published new progress about Gamma ray. 359-38-6 belongs to class amides-buliding-blocks, name is 2,2-Difluoroacetamide, and the molecular formula is C2H3F2NO, Product Details of C2H3F2NO.

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

Hermes, Robert published the artcileFirst cryopreservation of phyllostomid bat sperm, HPLC of Formula: 123-39-7, the main research area is Carollia cryopreservation media sperm motility artificial insemination; Assisted reproduction technology; Methylformamide; Species conservation; Yangochiroptera.

Bats, the second-largest mammalian order, are widely distributed and provide crucial ecosystem services. Their reproductive biol. comprises noteworthy characteristics, such as long-term sperm storage, delayed implantation or even delayed fetal development. The understanding of these mechanisms remains limited. Research in reproductive biol. may become crucial for the conservation of endangered bat species. Indeed, the IUCN Red List of Threatened Species currently lists 76 bat species as endangered or critically endangered, for which conservation measures should be taken. The development of assisted reproductive technologies (ART) in bats would thus open new perspectives. In this context we here describe the first successful cryopreservation of bat sperm in the Seba′s short-tailed bat (Carollia perspicillata). Epididymal sperm of 30 males was pooled in 6 sample sets and diluted using four different cryo-diluents: Canifreeze, modified Canifreeze, BotuCrio and Test egg yolk extender. Glycerol and a mixture of glycerol and methylformamide were used as cryoprotectants. Best post-thaw results were achieved when sperm was diluted in Test egg yolk extender containing a mixture of glycerol and methylformamide as cryoprotectant. Post-thaw sperm motility, progressive motility and acrosome integrity of 42.0 ± 3.4%, 28.3 ± 6.3% and 87.7 ± 1.7%, resp. were superior to all other variants tested. It remains to be determined if the post-thaw quality of cryopreserved bat spermatozoa achieved in this study is sufficient for the use in artificial inseminations and produces acceptable pregnancy rates. Successful cryopreservation of spermatozoa in C. perspicillata may serve as the first model to establish gamete rescue programs and develop ART in other, critically endangered bat species.

Theriogenology published new progress about Acrosome. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, HPLC of Formula: 123-39-7.

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

Soni, Yogesh published the artcileEffects of different concentration and combinations of cryoprotectants on sperm quality, functional integrity in three Indian horse breeds, Quality Control of 123-39-7, the main research area is glycerol dimethyl formamide toxicity cryoprotectant horse sperm breed; Acrosome integrity; Cryopreservation; Cryoprotectant; DMF; Glycerol.

Traditionally Glycerol (Gly) is being used as major cryoprotectant and its toxicity could be a reason for the variation on stallion sperm freezability and fertility. In an effort to minimize Gly toxicity alternative cryoprotective agents like DMF (DMF) have been investigated. The effect of the cryoprotectant and dose of cryoprotective agent varies from breed to breed and also from stallion to stallion within the same breed. Considering these factors a study was designed to study the effects of Gly and DMF at different concentrations and combinations on the plasma membrane, acrosome and DNA integrity as well as other post thaw seminal characteristics of semen of three Indigenous stallion breeds. In the current study, semen was collected from apparently healthy 4-6 years old 3 Marwari, 3 Manipuri and 3 Zanskari breed stallions. After semen collection and evaluation of fresh semen, each semen sample was extended with semen extender containing different concentrations and combinations of Gly and DMF cryoprotectants (i.e. 5% Gly, 5% DMF, 2% Gly, 2% DMF, 2.5% Gly +2.5% DMF and 1% Gly +1% DMF) and frozen. Post thaw semen evaluation was done on the basis of post thaw motility, live sperm count, hypo osmotic swelling test, acrosomal integrity and DNA integrity. Frozen thawed semen showed that the values of plasma membrane integrity, acrosome integrity and DNA integrity parameters were significantly higher (P < 0.05) with 5% DMF than the other cryoprotectants levels and combinations of Gly and DMF. From the present study, it was inferred that the combination of cryoprotectants at different concentrations (Gly and DMF @ 2.5 and 1%) also could not show better enhancement compared to the single cryoprotectant i.e DMF @5% in various post thaw seminal characteristics of Indigenous stallion semen. DMF at 5% concentration gave better protection to the plasma membrane and retained the acrosome and DNA integrity of the spermatozoa. Hence it can be concluded that DMF at 5% can be used for the cryopreservation of the Indigenous stallion with better preservation of the seminal quality. Cryobiology published new progress about Acrosome. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Quality Control of 123-39-7.

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

Ramya, Kunchanapalli published the artcileRoom-temperature cost-effective in-situ grown MAPbBr3 crystals and their characterization towards optoelectronic devices, Related Products of amides-buliding-blocks, the main research area is room temperature methylammonium lead bromidecrystal optoelectronic device.

We report the in-situ, room-temperature synthesis of methylammonium lead bromide CH3NH3PbBr3 crystals using N-Me formamide as a source of methylammonium (MA+) ions during the crystallization process to explore the structural, dielec., and electronic properties of CH3NH3PbBr3 crystals for optoelectronic applications. Optical absorption and radio-luminescence measurements affirm the direct bandgap nature of the crystals. Impedance spectroscopy measurements with various applied AC voltages within the 20 Hz-10 MHz frequency range depict the influence of ionic motions on elec. transport across crystal planes. We have extracted elec. transport parameters in CH3NH3PbBr3 crystals from the Nyquist plots, which we found to be distinctly varied wherein two different AC voltage amplitude regimes, broadly for 10-50 mV and 100-500 mV AC voltage range.

Materials Science & Engineering, B: Advanced Functional Solid-State Materials published new progress about Band gap. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Related Products of amides-buliding-blocks.

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

Waghorne, W. Earle published the artcileA Study of Kamlet-Taft β and π* Scales of Solvent Basicity and Polarity/Polarizability Using Computationally Derived Molecular Properties, Product Details of C2H5NO, the main research area is solvent basicity polarity polarizability molicualr property.

The Kamlet and Taft solvent basicity parameter, β, and solvent polarity/polarizability parameter, π*, were analyzed in terms of properties of the solvent mols. derived from computational chem. The anal. of β, using a larger data set, confirms earlier conclusions that, for aprotic solvents, the basicity is determined by the partial charge on the most neg. atom of the solvent mol. and by the energy of the highest energy MO associated with the donor site. For alcs. and nitrogen bases containing N-H moieties, the β values deviate systematically from those for the non-hydrogen bonding solvents. Anal. of the polarity/polarizability parameter, π*, shows that it depends directly on the dipole moment, and quadrupolar amplitude of the solvent and on the energy of the HOMO, but decreases linearly with increasing solvent polarizability.

Journal of Solution Chemistry published new progress about Basicity. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Product Details of C2H5NO.

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