ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Cyclopropenes as Complex Ligands: Metal Induced Ring Opening and Carbonylation of a Bicyclopropenyl with Formation of a Tropone Derivative. The Crystal Structure of Tricarbonyl(4-7-η4-2,3,5,7-tetraphenyl-2,4,6-cycloheptatrien-1-one)-iron, (C6H2Ph4CO)Fe(CO)32,2′,3,3′-Tetraphenylbi-2-cyclopropen-1-yl (1) reacts with Fe2(CO)9 at room temperature to form (4-7-η4-2,3,5,7-tetraphenyl-2,4,6-cycloheptatrien-1-one)Fe(CO)3 (3). This unexpected transformation of a bicyclopropenyl derivative into a tropone complex involves the opening of both cyclopropene rings, insertion of CO, and ring closure. Oxidation with Cer(IV) yields the uncomplexed tropone derivative. The crystal structure of the title compound 3 has been determined.
Notes:
2,2′,3,3′-Tetraphenylbi-2-cyclopropen-1-yl (1) und Fe2(CO)9 reagieren bei Raumtemperatur unter Bildung von (4-7-η4-2,3,5,7-Tetraphenyl-2,4,6-cycloheptatrien-1-on)Fe(CO)3 (3). Diese unerwartete Umlagerung eines Bicyclopropenyl-Derivats in einen Tropon-Komplex verläuft unter Öffnung beider Cyclopropen-Ringe, CO-Einschub und Ringschluß. Oxidation mit Cer(IV) liefert daraus das freie Tropon-Derivat. Die Kristallstruktur der Titelverbindung 3 wurde bestimmt.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19821150613
