Buscar
Mostrando ítems 1-10 de 17
Friedel oscillations in a Luttinger liquid with long-range interactions
(American Physical Society, 2001-06)
We introduce a path-integral approach that allows us to compute charge-density oscillations in a Luttinger liquid with impurities. We obtain an explicit expression for the envelope of Friedel oscillations in the presence ...
Improvements in the acylation of 3-methylindole using amberlyst-15
(Bentham Science Publishers, 2020-02)
A simple and efficient methodology for Friedel-Crafts acylation of 3-methylindole using Amberlyst 15 resin as catalyst is described. This methodology shows good selectivity towards the for-mation of the products of ...
Tuning the Lewis acid phenol ortho-prenylation as a molecular diversity tool
(Springer, 2016-05)
A diversity-oriented approach for the synthesis of various structurally different prenylated alcohols from readily accessible and common precursors was developed. With varying approaches, this article describes some ...
Polypropylene/Polystyrene Blends: In Situ Compatibilization by Friedel-Crafts Alkylation Reaction
(John Wiley & Sons Inc, 2004-02)
The application of Friedel-Crafts alkylation reaction to the compatibilization of polypropylene (PP)/polystyrene (PS) blends was assessed. A PP macrocarbocation is chemically bonded to the PS benzene ring by aromatic ...
Stability and activity of Zn/MCM-41 materials in toluene alkylation: Microwave irradiation vs continuous flow
(MDPI, 2019-02-01)
Zn/MCM-41 mesoporous materials have been prepared via classic wet impregnation, employing zinc nitrate as precursor and tested for activity and stability in the Friedel-Crafts alkylation of toluene with benzyl chloride ...
Re-Engineering Organocatalysts for Asymmetric Friedel-Crafts Alkylation of Indoles through Computational Studies
(American Chemical Society, 2020-08)
The discovery of efficient organocatalysts is generally carried out by thorough experimental screening of different candidates. We recently reported an efficient organocatalyst for iminium-ion-based asymmetric Diels-Alder ...
The Hepatitis E virus intraviral interactome
(Nature Publishing Group, 2015-10)
Hepatitis E Virus (HEV) is an emerging virus causing epidemic acute hepatitis in developing countries as well as sporadic cases in industrialized countries. The life cycle of HEV is still poorly understood and the lack of ...
Catalytic Degradation of Polystyrene: Modeling of Molecular Weight Distribution
(Wiley VCH Verlag, 2011-06)
Two of the most abundant polymers in household waste streams, PS and PE, may be recycled by compatibilization through a Friedel-Crafts alkylation. This reaction produces a graft copolymer PE-g-PS that improves the properties ...
Acylating Capacity of the Phosphotungstic Wells-Dawson Heteropoly Acid: Intermediate Reactive Species
(American Chemical Society, 2011-01)
The mechanism of adsorption and decomposition of acetic anhydride over phosphotungstic Wells-Dawson heteropoly acid (HPA) was investigated through infrared spectroscopy with especially dedicated in situ cells. Both gaseous ...
Acylating Capacity of the Fosfotungstic Wells-Dawson Heteropoly-acid: Intermediate Reactive Species.
(American Chemical Society, 2011-01-27)
The mechanism of adsorption and decomposition of acetic anhydride over phosphotungstic Wells-Dawson heteropoly acid (HPA) was investigated through infrared spectroscopy with especially dedicated in situ cells. Both gaseous ...