AbstractDas aus der Azoverbindung (I) erhaltene Radikal (II) wird auf seine Fähigkeit untersucht, Wasserstoff aus Thiophenol, Dicyclohexylphosphin, Phenolen und Aralkyl‐Donatoren zu abstrahieren.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTArrhenius parameters for rearrangements of the neophyl, 1-indanylmethyl, 2-allylbenzyl, and 2-(2-vinylphenyl)ethyl radicals relative to hydrogen abstraction from tributylstannaneJames A. Franz, Russell D. Barrows, and Donald M. CamaioniCite this: J. Am. Chem. Soc. 1984, 106, 14, 3964–3967Publication Date (Print):July 1, 1984Publication History Published online1 May 2002Published inissue 1 July 1984https://pubs.acs.org/doi/10.1021/ja00326a013https://doi.org/10.1021/ja00326a013research-articleACS PublicationsRequest reuse permissionsArticle Views639Altmetric-Citations56LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Die Temp.‐Abhängigkeit der H‐Abspaltung aus Tributylstannan durch Radikale wie z.B. (I), (‐III) und (V) liefert kinetische Daten und Arrheniusparameter von Umlagerungsreaktionen, die mit der H‐Abstraktion konkurrieren.
The thermal conversion of coal involves the decomposition of interconnected hydroaromatic structures into resonance stabilized benzylic radical fragments. Capping of these radicals with hydrogen from a donor solvent leads to the formation, in high yields, of lower molecular weight soluble and volatile products. In the absence of a donor solvent, the radicals abstract hydrogen from alkyl coal structures and depending on the supply of donatable hydrogen within the coal, conversion yields may be greatly affected. In view of the great variety of radicals which must form during coal liquefaction and the many possible competing reactions which lead to products, the ability of a donor solvent to transfer hydrogen to coal radicals is undoubtedly of great importance. Although much quantitative data describing the reactions of alkyl and heteroatom radicals with hydroaromatic donor solvents exists, surprisingly little data is available on the reactions of resonance stabilized radicals with hydroaromatic donors. Realizing the importance of this data to the development of a basic understanding of coal conversion chemistry, we have developed a procedure for the quantitative determination of hydrogen donor strengths toward the benzyl radical. The method competes the rearrangement of o-allylbenzyl radical against hydrogen transfer to the radical from a donor solvent.more » At this time, the method provides relative and estimated absolute rates of hydrogen atom transfer. Experiments are in progress which are designed to convert these relative rates to absolute rates with a high degree of accuracy and precision.« less
AbstractAus dem Tribromhexan (I) erhält man über eine Grignard‐Reaktion mit dem Nitril (II) das ungesättigte Keton (III), das nach Wittig zum Dien (IV) führt.
AbstractBei der Photolyse von 2‐(2‐Methylphenyl)‐propen in Cyclohexen/Benzol erhält man das m‐Isomere (II) neben dem Hydroanthracen (III), das zu dem auch aus (VIII) herstellbaren Dimethyl‐dihydroanthracen (IV) dehydriert werden kann.
