Oberflächenverbindungen von Übergangsmetallen, XXIII [1]. Die Umsetzung cyclischer Olefine mit Oberflächen-Chrom(II) auf Silicagel bei höherer Temperatur / Surface Compounds of Transition Metals, XXIII [1]. The Reaction of Cycloolefines with Surface Chromium (II) on Silicagel at Higher Temperature
Open Access
- 1 July 1980
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 35 (7) , 848-854
- https://doi.org/10.1515/znb-1980-0711
Abstract
By reaction with surface chromium(II) on silicagel at T > 150 °C, cycloolefins can undergo ring contraction, methylation/demethylation, hydrogenation/dehydrogenation, and isomerization. Furthermore, n-alkanes (C1...C4) are formed incorporating support hydrogen. - As in the case of the corresponding acyclic olefins, a common intermediate MC3 (metalla-cyclobutane ⇌ HM-allyl complex) for all these reactions is postulated; the transfer of C1 units is claimed to proceed via a carbene M = CH2 derived from the MC3 precursorKeywords
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