Synonyms:diazanium,sulfonatooxy sulfate
98.0% min. *data from raw suppliers
KLK3 *data from reagent suppliers
O,
Xn
The study presents a density functional theory (DFT) and experimental investigation of N,N'-bis(3-carboxy,4'-aminophenyl)-1,4-quinonediimine, a carboxyl-substituted aniline trimer. The research aims to understand the electronic and steric effects in co-polymers of aniline and anthranilic acid, and to explore the trimer's potential in corrosion inhibition. Chemicals used include 1,4-phenylenediamine, hydrochloric acid, ammonium persulfate, anthranilic acid, and ammonium hydroxide for the synthesis of the trimer. The synthesized trimer was then subjected to various experimental analyses, including UV-vis, near-IR, and NMR spectroscopy, to study its properties. The study also utilized computational methods to optimize the structures of the trimer's isomers and calculate their electronic properties, providing insights into the trimer's behavior in different oxidation states and solvent environments. The purpose of these chemicals was to synthesize the trimer and understand its redox properties, its ability to 'self-dope', and its effectiveness in corrosion inhibition, particularly in alkaline environments where standard oligo- and polyanilines fail.
The research focuses on the development of a new monomer, N-phenylethylenediamine methacrylamide (NPEDMA), which incorporates both aniline and methacrylamide functional groups. The purpose of this study was to create a monomer capable of orthogonal polymerization behavior, yielding conjugated polyaniline suitable for a wide range of applications such as electrochromic devices, sensors, and biosensors. The researchers synthesized homo or co-polymers containing the aniline moiety, which could then be polymerized to yield polyaniline. They also incorporated cross-linking agents to create interpenetrating polymethacrylamide–polyaniline networks, preventing phase separation. The monomer was polymerized using free radical, chemical oxidative, and electrochemical methods. Chemicals used in the process included NPEDMA, ethylene glycol dimethacrylate (as a cross-linker), ammonium persulfate (as an oxidizing agent), and N,N-diethyldithiocarbamic acid benzyl ester (as an initiator for cross-linking). The study concluded that the conductivity of the synthesized materials was higher than that of polyaniline synthesized under similar conditions, with the conductivity increasing two-fold when 5% ethylene glycol dimethacrylate was incorporated. The research demonstrated the potential of NPEDMA in creating conductive polymer surfaces and its versatility in various applications.
The study investigates an iron(II)/ammonium persulfate-mediated Newman?Kwart rearrangement of O-aryl carbamothioates in aqueous acetonitrile. Iron(II) in the form of Mohr's salt acts as a catalyst, while ammonium persulfate serves as a single-electron oxidant. The reaction enables the conversion of electron-rich and electron-neutral O-aryl carbamothioates to the corresponding S-aryl carbamothioates under mild conditions. The mild conditions, rapid reaction rates, and scalability offer practical benefits for accessing functionalized thiophenols. The study also explores the scope of the reaction, finding that it works well with electron-rich substrates and some nonactivated systems, but electron-deficient substrates either fail to react or undergo side reactions to form O-carbamates. Isotopic labeling experiments and a crossover experiment suggest that the reaction proceeds through an intramolecular radical-cation transition state mechanism. The novel strategy is further applied to the synthesis of a radiotracer for cancer drug resistance imaging.
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