Inside Cover: Direct Evidence for a [4+2] Cycloaddition Mechanism of Alkynes to Tantallacyclopentadiene on Dinuclear Tantalum Complexes as a Model of Alkyne Cyclotrimerization (Chem. Eur. J. 32/2015). Issue 32 (3rd August 2015)

• Record Type: Journal Article
• Authors: Yamamoto, Keishi; Tsurugi, Hayato; Mashima, Kazushi
• Is Part Of: Chemistry. Volume 21:Issue 32(2015)
• Page Start: 11258
• Page End: 11258
• Publication Date: 2015-08-03
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201590143
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>A dinuclear tantalum metallacyclopentadiene complex</bold> reacts with 2‐butyne to form a dinuclear tantalum complex bearing a dianionic C₆Et₄Me₂ ligand through the intermolecular [4+2] cycloaddition pathway. The picture uses scuba diving to illustrate the transition state of the [4+2] cycloaddition reaction. Six divers symbolize the ring‐constructing carbon atoms and are forming a circle hand in hand as they are gathering around two turtles. For more details see the Full Paper by H. Tsurugi, K. Mashima, and co‐workers on <ext-link ext-link-type="doi" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">page 11369 ff.</ext-link><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgj23tdt84p" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></p> </abstract>