Oral administration of camptothecin (Cm) derivatives and other antitumoral agents is being actively developed in order to improve the quality of life of patients with cancer. Though several lipophilic derivatives of CPT ...
[EN] 2,5-Dimethyl-2,4-hexadiene is a readily available and easily managable compound, whose symmetric and polymethylated dienic structure should be prone to engage in cross-metathesis reactions with other alkenes, but this ...
Nowadays, the most attractive technology for the elimination of nitric oxides
from the exhaust gas of diesel vehicles is the selective catalytic reduction with ammonia
(NH3-SCR-NOx) using Cu zeolite with the chabazite ...
[EN] The generation of a carbocation with an acid depends not only on the acid strength but also on the ability of the counteranion to stabilize the positive charge left behind. Here we report that despite their relatively ...
A new class of biodegradable anionic surfactants with structures based on 5-alkoxymethylfuroate was prepared starting from 5-hydroxymethylfurfural (HMF), through a one-pot-two-steps process which involves the selective ...
Leyva Perez, Antonio; Rubio Marqués, Paula; AL-Dejab, Salem S.; Al-Resayes, Saud I.; Corma Canós, Avelino(American Chemical Society, 2011)
[EN] Orthogonal sigma,pi-bisfunctionalization of terminal alkynes can be achieved with a cationic gold complex in catalytic amounts. First, the terminal C-H bond is transformed to the corresponding bromoalkyne which is ...
[EN] Catalytic properties of the cluster compound (TBA)2[Mo6Ii8(O2CCH3)a6] (TBA = tetrabutylammonium) and a new hybrid material (TBA)2Mo6Ii8@GO (GO = graphene oxide) in water photoreduction into molecular hydrogen were ...
Combariza Montañez, Aldo Fabrizzio; Sastre Navarro, German Ignacio(2011-06-23)
We report results of molecular dynamics simulations on the transient and equilibrium surface adsorption of
methane in a model Si-LTA zeolite structure with explicit silanol
terminal groups. Using probability occupancy ...
The bis(triflimide)iron(III) salt catalyzes
the hydrothiolation of styrenes in a Markovnikov
fashion with good selectivities and high yields. After
isolation, different benzylic thioethers are obtained.
This iron(III) ...
Boronat Zaragoza, Mercedes; Cómbita Merchán, Diego Fernando; Concepción Heydorn, Patricia; Corma Canós, Avelino; García Gómez, Hermenegildo; Juárez Marín, Raquel; Laursen ., Siris Odin; Lopez-Castro, Juan de Dios(American Chemical Society, 2012-11-29)
The nature of the active sites involved in the gold catalyzed Sonogashira cross-coupling reaction between iodobenzene and phenylacetylene, and in the competitive homocoupling reactions, has been investigated by means of ...
[EN] The synthesis of cyclized organic compounds with more than ten atoms (macrocycles) is traditionally based on reversible reactions under highly diluted conditions, typically <0.05¿M, in order to circumvent the formation ...
Combariza Montañez, Aldo F.; Sastre Navarro, German Ignacio; Corma Canós, Avelino(American Chemical Society, 2011)
Molecular dynamics (MD) simulations were performed to study the microscopic motion of methane, ethane, propene, and propane adsorbed in three pure silica zeolites with windows made of 8 SiO(4) tetrahedral units: Si-LTA, ...
Metallic cobalt nanoparticles with surface CoOx patches covered by thin layered carbon (named Co@C) have been directly synthesized by thermal decomposition of Co-EDTA complex. Raman spectra and HRTEM images suggest that ...
López-Vinasco, Angela M.; Martínez-Prieto, Luis Miguel; Asensio, Juan M.; Lecante, Pierre; Chaudret, Bruno; Cámpora, Juan; van Leeuwen, Piet W. N. M.(The Royal Society of Chemistry, 2020-01-21)
[EN] The main challenge in the hydrogenation of alkynes into (E)- or (Z)-alkenes is to control the selective formation of the alkene, avoiding the over-reduction to the corresponding alkane. In addition, the preparation ...
[EN] Octahedral tantalum clusters are redox-active compounds. [{Ta6Bri12}Bra2(H2O)a4]·4H2O (i = inner; a = apical ligands) cluster results in efficient pre-catalyst for the light-driven H2 production from aqueous protons ...
[EN] The direct synthesis of terminal alkynes from widely available terminal alkenes is an unmet challenge in organic synthesis. Here, we show that alkyl and aromatic terminal alkenes can be converted to the corresponding ...
[EN] Zeolite Y, with a high SiO2/Al(2)O(3)ratio (SAR), plays an important role in fluidized catalytic cracking processes. However, in situ synthesis of zeolite Y with high SARs remains a challenge because of kinetic ...
Leyva Perez, Antonio; Oliver Meseguer, Judit; Cabrero Antonino, Jose Ramón; Rubio Marqués, Paula; Serna, Pedro; Al-Resayes, Saud I.; Corma Canós, Avelino(American Chemical Society, 2013-07)
[EN] Propiolates cyclotrimerize in the presence of catalytic amounts of gold nanoparticles to give aryl benzoates in high yields and with turnover frequencies of thousands per hour. Types of alkynes other than propiolates ...
The triflimide iron(III) salt [Fe(NTf2)3] promotes the direct hydration of terminal and internal alkynes with very good Markovnikov regioselectivities and high yields. The enhanced carbophilic Lewis acidity of the FeIII ...
Mallón, Laura; Cerezo-Navarrete, Christian; Romero, Nuria; Puche Panadero, Marta; García-Antón, Jordi; Bofill, Roger; Philippot, Karine; Martínez-Prieto, Luis M.; Sala, Xavier(The Royal Society of Chemistry, 2021-12-20)
[EN] The development of organic-inorganic hybrid materials for redox catalysis is key to access new energy conversion schemes and the sustainable production of dihydrogen. Here, bare and P-doped graphene arising from the ...