Primary aromatic amines Food simulants Food Polyamide Migration testing Swelling 1. Introduction Primary aromatic amines (PAAs) are organic substances with at least one primary amino group bound to an aromatic ring, often considered derivatives of aniline (ANL). The structural diversity of PAAs results...
An activated carboxylic acid acylates ammonia, primary or secondary amines by a formal SN2 substitution of leaving group X. The reactivity of the acylating reagent depends on the acidity of HX, and therefore the order of reactivity is RCOHal > (RCO)2O≈ RCON3 > RCO2R > RCONH2 > RCOR...
OCT1 (SLC22A1) transporter kinetics and regulation in primary human hepatocyte 3D spheroids ArticleOpen access27 July 2024 Introduction Exposure to aromatic amines (AA) is of concern in pharmaceutical development, as well as in occupational and wider environmental contexts, due to their potential toxi...
, hydrated oxide or oxide of chromium and manganese as the catalyst support, said catalyst containing an inorganic and/or organic alkali metal compound, a process for its preparation and use of such supported ruthenium catalyst as a catalyst especially for nuclear hydrogenation of aromatic amines. ...
Full-color emission of A-PM regulated by anionic polymerization Continuous precise tuning of fluorescent emission within the visible region or even in a larger range has always been the primary motivation for the structural design and synthesis of fluorescent materials. As concluded previously, the con...
Representative templating moieties include quaternary cations such as XR4 where X is phosphorous or nitrogen and R is an alkyl radical containing from 2 to 6 carbon atoms, e.g., tetrapropylammonium hydroxide (TPA-OH) or halide, as well as alkyl hydroxyalkyl compounds, organic amines and diamine...
23.1.1StructureofNitrobenzene sp2 ONO147pm121pm127 Ar ONO极限式ONO共振式 NO2 ONO离域式ONO 23.1.2Preparationof Nitrobenzene Wehavealreadyseenmanyexamplesofthepreparationofaromaticnitrocompounds.Byfarthemostimportantroutetosuchcompoundsiselectrophilicaromaticnitrationwithnitricacid.NO2CH3CH3HNO3Ac2O,20℃CH3...
In the current study, the impacts of using cumin (0.5% and 1%, w/w) in beef meatballs on heterocyclic aromatic amines (HAAs) formation and some quality characteristics when cooked at 150 and 250 °C were investigated. It was found that using of cumin at different ratios in beef meatballs...
2.2. Cu-Catalyzed Substitution of Halogen in Ar-Xs with Primary and Secondary Amines Instead of ammonia and its mentioned substitutes, a broad range of other nitrogen nucleophiles including aliphatic and aromatic amines, N-heterocycles, or amino acids can be used for the amination of Ar-Xs (Sche...
tion of aromatic heterocycles from acyclic precursors or by ring interconversion,The coverage cannot be comprehensive because of pressure of space,Many useful applications of exist- ing methods are not included; in particular,several of those