0000000001300660
AUTHOR
Israel Fernández
showing 9 related works from this author
Synthesis of oxaspiranic compounds through [3 + 2] annulation of cyclopropenones and donor–acceptor cyclopropanes.
2014
The Sc(OTf)3-catalyzed [3 + 2]-annulation reaction between cyclopropenones and donor–acceptor cyclopropanes is described. The process leads directly to the formation of 4-oxaspiro[2.4]hept-1-ene derivatives in good to excellent reaction yields. Density functional theory calculations suggest that the [3 + 2]-annulation pathway is strongly preferred over the possible [3 + 3]-process.
Fluorescence Quenching in BODIPYs Having Ir‐ and Rh‐Tethered Complexes
2016
The effect of Rh- and Ir-centers on the optical properties of the BODIPY core has been studied. To this end, novel metal complexes tethered to BODIPY have been prepared through an easy and versatile procedure using N-directed C–H activation reactions. The organometallic moiety has a tremendous influence on the emissive properties of the BODIPY fragment. A photoinduced electron transfer (PET) mechanism is suggested to be the main mechanism responsible for the suppression of the BODIPY fluorescence emission in the newly formed dyads. The efficiency of the PET depends on both the distance between the chromophores in the dyad and the nature of the transition metal (Rh vs. Ir).
Remote Control by π-Conjugation of the Emissive Properties of Fischer Carbene-BODIPY Dyads.
2016
The synthesis, structure, and complete characterization of mono- and bimetallic dyads joining Fischer carbene complexes and BODIPY chromophores are reported. In these organometallic species, the Fischer carbene complex is attached to the BODIPY moiety through a p-aminophenyl group linked at the C8 carbon atom of the BODIPY core. The photophysical properties, namely the corresponding UV/vis absorption and emission spectra of these new metal-carbene complexes, are analyzed and discussed. It is found that whereas the absorption of the considered dyads strongly resembles that of the parent 4-anilinyl-substituted BODIPY, the fluorescence emission is significantly reduced in these species, very l…
2,4,5-Trimethylimidazolium Scaffold for Anion Recognition Receptors Acting Through Charge-Assisted Aliphatic and Aromatic C–H Interactions
2016
A series of two-armed 2,4,5-trimethylimidazolium-based oxoanion receptors, which incorporate two end-capped photoactive anthracene rings, being the central core an aromatic or heteroaromatic ring, has been designed. In the presence of HP2O7(3-), H2PO4(-), and SO4(2-) anions, (1)H- and (31)P NMR spectroscopical data clearly indicate the simultaneous occurrence of several charge-assisted aliphatic and aromatic C-H noncovalent interactions, i.e., significant downfield shifts were observed for the imidazolium C(2)-CH3 protons, the methylene N-CH2 protons, and the inner aromatic proton or the outer heteroaromatic protons. Density functional theory calculations confirm the occurrence of these non…
CCDC 1045718: Experimental Crystal Structure Determination
2016
Related Article: Gong M. Chu, Israel Fernández, Andrés Guerrero-Martínez, Carmen Ramírez de Arellano and Miguel A. Sierra|2016|Eur.J.Inorg.Chem.||844|doi:10.1002/ejic.201501283
CCDC 1456591: Experimental Crystal Structure Determination
2016
Related Article: Paula Sabater, Fabiola Zapata, Antonio Caballero, Israel Fernández, Carmen Ramirez de Arellano, and Pedro Molina|2016|J.Org.Chem.|81|3790|doi:10.1021/acs.joc.6b00468
CCDC 1045717: Experimental Crystal Structure Determination
2016
Related Article: Gong M. Chu, Israel Fernández, Andrés Guerrero-Martínez, Carmen Ramírez de Arellano and Miguel A. Sierra|2016|Eur.J.Inorg.Chem.||844|doi:10.1002/ejic.201501283
CCDC 1054408: Experimental Crystal Structure Determination
2015
Related Article: Alexandra R. Rivero , Israel Fernández , Carmen Ramírez de Arellano , and Miguel A. Sierra|2015|J.Org.Chem.|80|1207|doi:10.1021/jo502292y
CCDC 1471182: Experimental Crystal Structure Determination
2016
Related Article: Gong M. Chu, Andrés Guerrero-Martínez, Carmen Ramírez de Arellano, Israel Fernández, and Miguel A. Sierra|2016|Inorg.Chem.|55|2737|doi:10.1021/acs.inorgchem.5b02448