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Dinuclear Ruthenium(I)Triazenide Complexes as Catalysts for Carbenoid Cyclopropanation Reactions
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Claus-Dieter Leger
Published/Copyright:
June 2, 2014
Abstract
The ability of ruthenium(I) triazenide complexes [Ru(CO)3(ArNNNAr)]2 (Ar = C6H4-4-X, X = CH3, Cl, Br) to catalyze the cyclopropanation of alkenes with methyl diazoacetate is investigated. With terminal alkenes (styrene, ethyl vinyl ether, 1-hexene), the cyclopropanecarboxylic esters are formed in good to high yield and with an E : Z diastereoisomer ratio of about 1.0 in most cases. 2-Methyl-2-butene is cyclopropanated in low yield but with a syn-selectivity up to 90:10.
Received: 2004-1-13
Published Online: 2014-6-2
Published in Print: 2004-5-1
© 1946 – 2014: Verlag der Zeitschrift für Naturforschung
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Keywords for this article
Catalysis;
Cyclopropanation;
Diazo Compounds;
Ruthenium Complexes;
Triazenide Ligands
Articles in the same Issue
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