Synthesis, characterization, and application for addition polymerization of norbornene of novel acetylacetonate bis(anilines) palladium (II) complexes
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Keywords:
Norbornene
Dimethylaniline
Toluidine
J. Haslam and F. Sweeney, Analyst, 1945, 70, 413 DOI: 10.1039/AN9457000413
Dimethylaniline
Aniline Compounds
Picryl chloride
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Dimethylaniline
Gravimetric analysis
Langmuir adsorption model
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Aniline and its dimethyl derivatives reportedly become haematotoxic after metabolic N-hydroxylation of their amino groups. The plasma concentrations of aniline and its dimethyl derivatives after single oral doses of 25 mg/kg in rats were quantitatively measured and semi-quantitatively estimated using LC-tandem mass spectrometry. The quantitatively determined elimination rates of aniline; 2,4-dimethylaniline; and 3,5-dimethylaniline based on rat plasma versus time curves were generally rapid compared with those of 2,3-; 2,5-; 2,6-; and N,2-dimethylaniline. The primary acetylated metabolites of aniline; 2,4-dimethylaniline; and 3,5-dimethylaniline, as semi-quantitatively estimated based on their peak areas in LC analyses, were more extensively formed than those of 2,3-; 2,5-; 2,6-; and N,2-dimethylaniline. The areas under the curve of unmetabolized (remaining) aniline and its dimethyl derivatives estimated using simplified physiologically based pharmacokinetic models (that were set up using the experimental plasma concentrations) showed an apparently positive correlation with the reported lowest-observed-effect levels for haematotoxicity of these chemicals. In the case of 2,4-dimethylaniline, a methyl group at another C
Dimethylaniline
Aniline Compounds
Hydroxylation
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Abstract Three new, hitherto unknown, rhodium complexes with aniline and two of its derivatives (2, 6‐dimethylaniline and N ‐methylaniline) are presented. All complexes have been characterized by X‐ray analysis.
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The C13 nuclear magnetic resonance spectra of aniline, nine methylanilines, N,N-dimethylaniline and eight methyl-N,N-dimethylanilines have been obtained and analyzed. A detailed study of the influence of methyl substituents on ring carbon shieldings has been made, and estimates of the changes in charge distributions resulting from steric inhibition of conjugation derived from the results. Reasonably good agreement with other theoretical and experimental investigations of these effects has been found. The N-methyl carbon shieldings appear to be correlated with the base strengths of the amines.
Dimethylaniline
Base (topology)
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Norbornene
Thermal Stability
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Synthesis of N,N -dimethylaniline ( N,N -DMA)by aniline and methanol over β zeolite molecular sieves has been studied.The activity and selectivity of catalyst was investigated by varying reaction temperature and WHSV,and by a 800-hour life experiment.It is proved that the best reaction conditions are: reaction temperature 240～250 ℃ and feed rate 0 5 h -1 with aniline / methanol mol ratio = 1/3.During the life experiment the conversion of aniline is above 99% in average,and the selectivity of N,N -DMA is above 86%,while the selectivity of N -methylaniline and N,N -DMA is above 95%.
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A route for the direct synthesis of N,N-dimethylaniline from nitrobenzene and methanol was developed through the sequential coupling of the hydrogen production from methanol, hydrogenation of nitrobenzene to produce aniline, and N-methylation of aniline over a pretreated Raney-Ni® catalyst (at 443 K in methanol). A high yield of N,N-dimethylaniline up to 98% was obtained by the proposed methodology. In this process, aniline was produced from in-situhydrogenation of nitrobenzene with hydrogen generated from methanol, or transfer hydrogenation of nitrobenzene with methanol as donor, while methanol acted as a hydrogen source, alkylating reagent and solvent, simultaneously. Additionally, a plausible mechanism of this one-pot reaction process has been described.
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Nitrobenzene
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrophilic aromatic triphenylmethylation. SCF-MO calculations on aniline, N-methylaniline, N,N-dimethylaniline, and ortho-substituted anilinesManfred K. Eberhardt and Gabriel ChuchaniCite this: J. Org. Chem. 1972, 37, 23, 3649–3653Publication Date (Print):November 1, 1972Publication History Published online1 May 2002Published inissue 1 November 1972https://pubs.acs.org/doi/10.1021/jo00796a018https://doi.org/10.1021/jo00796a018research-articleACS PublicationsRequest reuse permissionsArticle Views125Altmetric-Citations3LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Dimethylaniline
Electrophilic aromatic substitution
Electrophilic substitution
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