Unprecedented hydrogen transfer from water to alkenes and alkynes mediated by TiIII and late transition metals.
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.
Campaña
Araceli G
AG
Department of Organic Chemistry, Faculty of Sciences, University of Granada, E-18071 Granada, Spain.
Estévez
Rosa E
RE
Fuentes
Noelia
N
Robles
Rafael
R
Cuerva
Juan M
JM
Buñuel
Elena
E
Cárdenas
Diego
D
Oltra
J Enrique
JE