ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTCatalysis of Claisen Rearrangement by Low Molecular Weight Polyethylene1Kevin A. Swiss and Raymond A. FirestoneView Author Information Department of Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877-0368 Cite this: J. Org. Chem. 1999, 64, 6, 2158–2159Publication Date (Web):March 2, 1999Publication History Received8 December 1998Published online2 March 1999Published inissue 1 March 1999https://doi.org/10.1021/jo9823947Copyright © 1999 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views137Altmetric-Citations10LEARN 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 InReddit Read OnlinePDF (38 KB) Get e-AlertsSUBJECTS:Lipids,Minerals,Peptides and proteins,Polyethylene,Viscosity Get e-Alerts

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Organosulfur and organoselenium reagents offer many advantages over their first row counterparts for effecting a wide range of important synthetic transformations. These materials can be introduced into substrates either as nucleophiles, radicals or electrophiles. Once introduced, they can facilitate a variety of different processes by stabilizing adjacent positive or negative charges. Finally, after serving their purpose, they can be removed either oxidatively or reductively, thereby introducing either unsaturation or saturation, respectively.

AbstractTwelve ketones such as (I) are converted into the enolates by reaction with LDA (II).