Dr. Patricia García has received the award for junior director in the area of science, health sciences, engineering and architecture in the 2023 call.
This award is a recognition of the work done by the faculty of the University of Alcalá for obtaining results in the field of research training.
Congratulations!
Francisco Maqueda-Zelaya, José Luis Aceña*, Estíbaliz Merino, Juan J. Vaquero, and David Sucunza*
J. Org. Chem. 2023, ASAP
DOI: 10.1021/acs.joc.3c01675
| An efficient methodology to form 4-alkoxy- and 4-aryloxybenzo[d][1,2,3]triazines via an intramolecular heterocyclization of 1-azido-2-[isocyano(p-tosyl)methyl]benzenes under basic conditions has been developed. DFT calculations have been performed to further understand the mechanism of this heterocyclization, which occurs in good to excellent yields with a broad scope. |
Alcalá de Henares, 4 – 8 septembre
– Póster:
· Copper-catalyzed intramolecular cyclization of alkynylazobenzenes for the synthesis of 2H-indazoles
Clara Mañas, Juan Herrero, Estíbaliz Merino
– Póster:
· Visible-Light-Mediated Regioselective Chlorosulfonylation of Acrylamides
Guillermo G. Otárola, Mercedes Zurro, Sergio Torres-Oya, Juan José Vaquero, Estíbaliz Merino
– Póster:
· Direct conversion of C1−C6 alkanes into trifluoromethyl derivatives
Jonathan Martínez-Laguna, M. Ángeles Fuentes, Julia Altarejos, Javier Carreras, Ana Caballero, Pedro J. Pérez
Visible-light mediated synthesis of bicalutamide by regioselective hydroxysulfonylation of acrylamides.
Palabras clave: Bicalutamide; acrylamides; difunctionalization of alkenes; α-hydroxysulfones; hydroxysulfonylation
Resumen
No hay resumen
Mercedes Zurro, Sergio Torres-Oya, Estíbaliz Merino*
Eur. J. Org. Chem. 2023, Accepted Articles
DOI: 10.1002/ejoc.202300535
| Synthesis of anticancer drug bicalutamide promoted by visible light in one step from the corresponding N-arylacrylamide is described. This approach involves a one-pot hydroxysulfonylation reaction via a photocatalytic redox process. The use of Na2Eosin Y as photocatalyst and blue light allows the access to a broad range of α-hydroxysulfonylamides bearing a quaternary center in moderate to good yields with complete regioselectivity via radical process. |
Publications > Altarejos et al
One-Pot (3 + 2) Cycloaddition-Isomerization-Oxidation of 2,2,2-Trifluorodiazoethane and Styryl Derivatives.
1. Universidad de Alcalá, Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR), 28805, Alcala de Henares, Madrid, Spain. 2. Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) 28034, Madrid, Spain.
Abstract
A facile access to 5-aryl-3-trifluoromethylpyrazoles has been developed by a one-pot (3 + 2) cycloaddition-isomerization-oxidation sequence employing 2,2,2-trifluorodiazoethane and styryl derivatives. A broad variety of functional groups and good yields are achieved under mild conditions. Additionally, the functionalization of 3-trifluoromethylpyrazoles was studied. DFT calculations of the cycloaddition transition state energies are consistent with the experimentally observed reactivity.
Julia Altarejos, Estíbaliz Merino, David Sucunza, Juan J. Vaquero, and Javier Carreras*
J. Org. Chem. 2023, ASAP
DOI: 10.1021/acs.joc.3c00396
| A facile access to 5-aryl-3-trifluoromethylpyrazoles has been developed by a one-pot (3 + 2) cycloaddition–isomerization–oxidation sequence employing 2,2,2-trifluorodiazoethane and styryl derivatives. A broad variety of functional groups and good yields are achieved under mild conditions. Additionally, the functionalization of 3-trifluoromethylpyrazoles was studied. DFT calculations of the cycloaddition transition state energies are consistent with the experimentally observed reactivity. |
The University of Alcalá has recognized with the Silver Medal the outstanding professional career of Professor Dr. Juan José Vaquero. Congratulations!
Hyper-Cross-Linked Porous Polymer Featuring B-N Covalent Bonds (HCP-BNs): A Stable and Efficient Metal-Free Heterogeneous Photocatalyst.
1. Department of Frontiers in Materials Chemistry, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz, 3, Cantoblanco, Madrid 28049, Spain. 2. Universidad de Alcalá (IRYCIS), Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR), Campus Científico-Tecnológico, Facultad de Farmacia, Autovía A-II, Km 33.1, 28805-Alcalá de Henares, Madrid, Spain.
Abstract
The first example of a porous polymer containing B-N covalent bonds, prepared from a tetraphene B-N monomer and biphenyl as a comonomer, is reported. It was prepared using the solvent knitting strategy, which allows the connection between the aromatic rings of the two monomers through methylene groups provided by an external cross-linking agent. The new polymer exhibited micromeso porosity with an S(BET) of 612 m(2)/g, high thermal stability, and potential properties as a heterogeneous photocatalyst, since it is very active in the aza-Henry coupling reaction (>98% of conversion and selectivity). After the first run, the catalyst improves its photocatalytic activity, shortening the reaction time to only 2 h and maintaining this activity in successive runs. The presence of a radical in this structure that remains stable with successive runs makes it a new type of material with potential applications as a highly stable and efficient photocatalyst.
Professor Dr. Juan José Vaquero will become Professor Emeritus in September, after a long and successful career at the UAH.
His group organized a tribute to him together with colleagues, former collaborators and friends.
