Nanoclay is considered potential nanofiller for the manufacturing of natural fiber nanocomposites. The hydrophilic nature of natural fibers affects negatively its adhesion to hydrophobic polymer matrix. In the present study, propionic anhydride (PA) treated jute were used for the manufacturing o...
Friedel–Crafts acylation is ubiquitous in industry and is typically carried out by using more than stoichiometric quantities of homogeneous catalysts. This creates pollution. In this work, acylation of toluene was studied in liquid phase with propionic anhydride with a variety of solid superaci...
The synthesis of 4-methoxypropiophenone, an intermediate for the production of fine chemicals and pharmaceuticals, was carried out via Friedel–Crafts acylation of anisole with propionic anhydride by using various solid acid catalysts. The reactions were carried out under solvent-free conditions...
Novel segmented polyurethanes with hard segments based on a single diisocyanate molecule with no chain extenders were prepared by the stoichiometric reactions of poly(tetramethylene oxide)glycol (Mn=1000 g/mol) (PTMO-1000) and 1,4-phenylene diisocyanate (PPDI), trans-1,4-cyclohexyl diisocyanate ...
Thermotropic polyurethanes were prepared from three commercial diisocyanates of various flexibility and eight diols (based on diethanolamine derivatives) with mesogenic groups in side chain with stoichiometric ratio of reactive isocyanate and hydroxy groups. Polymers were studied by dynamic mech...
N,N'-(4-Methyl-1,3-phenylene)bis[N-(1,5-dimethylhexyl)urea] or DMHUT, a low molecular weight bisurea with branched alkyl substituents, is capable of thickening high-pressure propane, which could lead to improvements in its performance during miscible enhanced oil recovery and waterless hydr...
Quantum mechanical calculations (QMC) and dissipative particle dynamics (DPD) simulations were utilized to understand the nature of the short and long-range hydrogen bonding and its influence on the microphase morphology in segmented polyurethanes and segmented polyureas prepared without chain e...
In this study, we have for the first time demonstrated that succinimide (SI)-KI is an efficient catalyst system to synthesize propylene carbonate (PC) from carbon dioxide (CO2) and propylene oxide (PO) at a solvent-free condition. A synergistic effect was observed between SI and KI that largely ...
The spectral, structural, and quantum properties of N-(2-Hydroxyethyl) succinimide (N2HES) were experimentally and theoretically. FT-IR and FT-Raman spectra of N2HES were recorded in the region 4000-400 cm−1 in solid phase and the UV-Vis spectrum the compound was recorded in ethanol in the regio...
An efficient protocol has been accomplished for the synthesis of quaternary α-aminosuccinimides in toluene medium involving 2-phenylimidazo[1, 2-a]pyridine in a one-pot reaction promoted by Ferric Nitrate at 120 °C. The protocol presented herein, is for the first time, via a novel transformati...
LC-MS peptide mapping is the most commonly used method to analyze protein modifications. The proteins are generally digested using trypsin at a slightly basic pH at 37 °C from several hours to overnight. Assay-induced artifacts can be generated during this procedure, potentially causing false-p...
A novel series of benzylidene-succinimide derivatives were synthesized, characterized and evaluated for their cytotoxicities against HCT116, and SW480 cancer cells and NCM460 normal human cells. Their antiangiogenic capabilities were evaluated using a chick chorioallantoic membrane (CAM) assay. ...
In the present study, twelve new 1-aryl-3-ethyl-3-methylpyrrolidine-2,5-diones were synthesized and their structures were characterized by FT-IR, 1H NMR, 13C NMR spectroscopy and elemental analysis. In the final step of synthetic rout, condensation between corresponding succinic acid and substit...
A new class of highly potent biopharmaceutical drugs, antibody-drug conjugates (ADCs), has been proven to be clinically effective to treat oncologic diseases. ADCs contain 3 major components: the monoclonal antibody, cytotoxic drug, and chemical linker. THIOMAB™ drug conjugates and interchain-cy...
Characterization of asparagine deamidation and aspartic acid isomerization is an important aspect of biotherapeutic protein analysis due to the potential negative effect of these modifications on drug efficacy and stability. Succinimide has long been known to be an intermediate product of aspara...
ABSTRACTMonoclonal antibodies undergo several post-translational modifications, including the formation of succinimide from the deamidation of asparagine or the isomerization of aspartic acid. Because of the potential impact of succinimide formation on the biological activity of monoclonal antib...
Reactivity of holmium diphthalocyanine with iodide HoPc2I in the acetylacetone/water system has been investigated. Depending on the water quantity in the system the solvothermal reaction of HoPc2I with acacH/water leads to formation of four different compounds. All these four compounds were obta...
Half-sandwich organometallic complexes of curcumin are extensively investigated as anticancer compounds. Speciation studies were performed to explore the solution stability of curcumin complexes formed with [Rh(η5-C5Me5)(H2O)3]2+. Acetylacetone (Hacac), as the simplest β-diketone ligand bearin...
Acetylacetone (AA), due to the peculiar enol-keto structures, has attracted wide scientific interests. In terms of photo-decolorization, it works much more efficiently than the well-known H2O2. However, there is very limited information on the photochemistry of AA in aqueous solutions. Herein, t...
Cu(II)-EDTA is a stable metal-organic complex in electroplating wastewater and is hard to be removed by the conventional precipitation method. UV decomplexation is a useful strategy for its removal. Here, we report that acetylacetone (AA) can enhance the decomplexation of Cu(II)-EDTA by facilita...
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View