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Heterogeneous catalysis afford biodiesel of babassu, castor oil and blends
(2013-05-06)
This work describes the preparation of babassu, castor oil biodiesel and mixtures in various proportions of these oils, using alkaline compounds of strontium (SrCO3 + SrO + Sr (OH)2) as heterogeneous catalysts. The mixture ...
Factors of influence in the activity of titanocenes in the homogeneous catalysis of polymerization of polystyrene.
(Editora Unesp, 2000-01-01)
It is presented a review with 42 references dealing with the historical aspects of organometallics of titanium, the application of titanocenes in catalytical systems and the factors that may influence in the polymerisation ...
Styrene stereospecific catalysis by alkyl substituted titanocenes of the type (RCp)(2)TiCl2
(Editora Unesp, 2000-01-01)
A series of seven alkyl substituted complexes of the type (RCp)(2) TiCl2 (R =H, ethyl, n-propyl, iso-propyl, n=butyl, iso-amyl, ciclo-hexyl) was prepared, as well as the novel compound with R = sec-butyl, and the effects ...
Lipase-oxovanadium heterogeneous catalysis system: a robust protocol for the dynamic kinetic resolution of sec-alcohols
(2020-05-20)
Herein, we present a robust and eco-friendly dynamic kinetic resolution (DKR) protocol for secondary alcohols using a combined heterogeneous catalytic CAL−B/VOSO4 system at 50 °C in the relatively green solvent heptane. ...
Synthesis of a Small Library of Imidazolidin-2-ones using Gold Catalysis on Solid Phase
(American Chemical Society, 2016-08)
An efficient and high-yielding solid phase synthesis of a small library of imidazolidin-2-ones and imidazol-2-ones was carried out employing a high chemo- and regioselective gold-catalyzed cycloisomerization as a key step. ...
Visualization of phase-transfer catalysis through charge-transfer complexes
(2018)
Unlike the large number of laboratory experiments on phase-transfer catalysis (PTC) that focus on a catalyzed chemical process, the present laboratory emphasizes the mechanism of phase-transfer catalysis itself. Students ...
A visual illustration of phase-transfer catalysis through charge-transfer complexes.
(2018)
Phase-transfer catalysis is an important subject in undergraduate labs [1-4]. In the present
communication, the mechanism of phase-transfer catalysis (PTC) is illustrated visually by
following the reagent transfer by the ...
Intramolecular Catalysis of Phosphodiester Hydrolysis by Two Imidazoles
(Amer Chemical SocWashingtonEUA, 2010)