Because of their alkaline character, the worst-case scenario of primary aromatic amine (PAA) migration from food contact materials is commonly simulated by the use of 3% (w/V) acetic acid. However, stability-related issues have already shown that this simulant might not be the best choice. To...
mode by direct infusion in a solvent consisting of 45% 10 mM ammonium acetate in deionised water and 55% acetonitrile. Once optimised, multiple reaction monitoring (MRM) was performed to detect the parent amides and amine metabolites in each time point sample. Incubations where the total pare...
It is preferable that the organic compound layer comprises 1 to 70% by weight of the aromatic compound represented by general formula (I). When the content is smaller than 1% by weight, the effect of the invention cannot be obtained. When the content exceeds 70% by weight, the durability ...
15. A process for the catalytic hydrogenation of an aromatic amine which comprises contacting an aromatic amine with a source of hydrogen in the presence of the catalyst of claim 1. 16. A process according to claim 15 wherein the aromatic amine is one of the formula ##STR12## wherein ...
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...
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...
Determination the effects of pumpkin and rosehip seed oils on heterocyclic aromatic amine formation in meatballs by high-performance liquid chromatography. J. Food Process. Preserv. 2022, 46, e16299. [Google Scholar] [CrossRef] Erdoğan, B.; Özdestan-Ocak, Ö. Inhibitory effects of carob...
reported the cross-coupling reaction between fluoro-aromatics and primary amines, mediated by Ni-complexes and producing secondary amines in high selectivity [88]. Electron-rich aryl fluoride 4-fluoroanisole reacted with alkyl-amine to give secondary amine products in up to 94% isolated yields (...
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
Polyamines with primary and secondary amino groups may react with the epoxide groups in the form of their ketimines. The ketimines are prepared from the polyamines in a known manner. The amines may also contain other groups, but these must not interfere with the reaction of the amine with ...