Unprecedented hydrogen transfer from water to alkenes and alkynes mediated by TiIII and late transition metals |
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Authors: | Campaña Araceli G Estévez Rosa E Fuentes Noelia Robles Rafael Cuerva Juan M Buñuel Elena Cárdenas Diego Oltra J Enrique |
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Institution: | Department of Organic Chemistry, Faculty of Sciences, University of Granada, E-18071 Granada, Spain. |
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Abstract: | We describe how alkenes and alkynes can be hydrogenated under mild conditions by hydrogen transfer from water mediated by titanocene(III) and a substoichiometric quantity of one of the late transition metals usually employed as hydrogenation catalysts. This process proceeds presumably by H-atom transfer from TiIII-coordinated water to the late transition metal partner (depicted in the drawing above), a mechanism in support of which we provide theoretical and experimental evidence. |
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