Buscar
Mostrando ítems 1-10 de 12
Ketalization of ketones to 1,3-dioxolanes and concurring self-aldolization catalyzed by an amorphous, hydrophilic SiO2-SO3H catalyst under microwave irradiation
(2018-08-01)
The amorphous, mesoporous SiO2-SO3H catalyst with a surface area of 115 m2 g-1 and 1.32 mmol H+ per g was very efficient for the protonation of ketones on a 10% (m/m) basis, and the catalyst-bound intermediates can be ...
Structure optimization of lipopeptide assemblies for aldol reactions in an aqueous medium
(Royal Society of Chemistry, 2021-03-09)
Four amphiphilic peptides were synthesized, characterized, and evaluated regarding their efficiency in the catalysis of direct aldol reactions in water. The lipopeptides differ by having a double lipid chain and a guanidinium ...
Study of the citral/acetone reaction on MgyAlOx oxides: Effect of the chemical composition on catalyst activity, selectivity and stability
(Elsevier Science, 2008-08)
The liquid-phase citral/acetone reaction was studied on MgO, Al2O3 and MgyAlOx mixed oxides with Mg/Al molar ratios of 0.11-3. The density, strength and nature of surface acid sites were determined by NH3 thermodesorption ...
Effect Of The Acid-Base Properties Of Mg-Al Mixed Oxides On The Catalyst Deactivation During Aldol Condensation Reactions
(Plapiqui, 2003-12)
The effect of chemical composition of Mg-Al mixed oxides on both the acid-base properties and the deactivation process during the gas phase self-condensation of acetone was studied. The activity and selectivity for acetone ...
Tandem Reactions in Organic Synthesis: The Artistic Approach in Modern Organic Chemistry
(Universidad Militar Nueva Granada, 2016)
Supramolecular Host-Guest Asymmetric Induction In Organic Synthesis
(BENTHAM SCIENCE PUBL LTD, EXECUTIVE STE Y26, PO BOX 7917, SAIF ZONE, 1200 BR SHARJAH, U ARAB EMIRATES, 2012)
Rice Husk Reuse In The Preparation Of Sno<inf>2</inf>/sio<inf>2</inf> Nanocomposite
(Universidade Federal de Sao Carlos, 2015)
Estudio computacional de alquilaciones estereoselectivas de enolatos de litio
(Universidad de los AndesQuímicaFacultad de CienciasDepartamento de Química, 2020-06-12)
La estereoselectividad es un factor crucial en la síntesis de compuestos biológicamente activos, y los auxiliares quirales desempeñan un papel fundamental en el control de esta propiedad. Se ha demostrado experimentalmente ...