RT Journal Article T1 Stable N-heterocyclic carbene (NHC)-palladium(0) complexes as active catalysts for olefin cyclopropanation reactions with ethyl diazoacetate A1 Martín, Carmen A1 Molina González, Francisco A1 Álvarez, Eleuterio A1 Rodríguez Belderraín, Tomás AB The Pd(0) complexesNHCPdLn (NHC = N-heterocycliccarbene ligand; L = styrene for n = 2 orPR3 for n = 1) efficiently catalyze theolefin cyclopropanation using ethyldiazoacetate (EDA) as the carbenesource with activities that improve anyother previous described catalyticsystem based on this metal.Mechanistic studies have shown that allthose catalyst precursors deliver insolution the same catalytic species(IPr)Pd(sty), a 14e, unsaturatedintermediate that further reacts withEDA to afford (IPr)Pd(=CHCO2Et)(sty),from which cyclopropane is formed. PB Wiley-VCH Verlag SN 0947-6539 SN 1521-3765 (electrónico) YR 2011 FD 2011 LK http://hdl.handle.net/10272/11567 UL http://hdl.handle.net/10272/11567 LA eng NO Martín, C., Molina, F., Álvarez, E., Rodríguez Belderraín, T.: "Stable N-heterocyclic carbene (NHC)-palladium(0) complexes as active catalysts for olefin cyclopropanation reactions with ethyl diazoacetate". Chemistry - A European Journal. Vol. 17, n. 52, págs. 14885–14895, (2011). DOI: 10.1002/chem.201102900 NO We thank Prof. P.J. Perez (Univ. Huelva) for helpful and constructive comments on these studies. We thank the Ministerio de Ciencia e Innovacion (grants CTQ2008-00042BQU and CTQ2011-24502) and the Junta de Andalucia (Proyecto P07-FQM-02794) for financial support. CM thanks the MEC for a research fellowship.We thank Prof. P. J. Pérez (Univ. Huelva) for helpful and constructive comments on these studies. We thank the Ministerio de Ciencia e Innovación (grants CTQ2008–00042BQU and CTQ2011–24502) and the Junta de Andalucía (Proyecto P07-FQM-02794) for financial support. CM thanks the MEC for a research fellowship DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026