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|Title:||Ligand-controlled regio- and stereoselective addition of carboxylic acids onto terminal alkynes catalyzed by carbonylruthenium(0) complexes|
|Citation:||Tan, S.T., Fan, W.Y. (2010-10). Ligand-controlled regio- and stereoselective addition of carboxylic acids onto terminal alkynes catalyzed by carbonylruthenium(0) complexes. European Journal of Inorganic Chemistry (29) : 4631-4635. ScholarBank@NUS Repository. https://doi.org/10.1002/ejic.201000579|
|Abstract:||The addition of carboxylic acids onto terminal alkynes was catalyzed by mononuclear ruthenium(0) complexes to give enol esters in high yields. By using ligands with different electronic properties, product selectivity was achieved. E-enol esters were preferentially produced when tricarbonyl(η4- diene)ruthenium complexes were used; while geminal enol esters were produced when tricarbonylbis(phosphane)ruthenium complexes were used. Product selectivity is a major problem in transition metal-catalyzed hydrocarboxylation reactions. In this paper we report the ability of Ru(CO)3L2 (where L is a 2 e-donor) to catalyze the addition of variouscarboxylic acids onto terminal alkynes. A direct relationship between the regioselectivity of the product and the electronic property of the catalysis metal centre was observed. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.|
|Source Title:||European Journal of Inorganic Chemistry|
|Appears in Collections:||Staff Publications|
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