Results 111 to 120 of about 387,390 (249)

Asymmetric Synthesis of Tertiary α‐Aryl Stereocentres in Tetrahydro‐4H‐pyran‐4‐ones Using Pd‐Catalyzed Decarboxylative Asymmetric Protonation

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
The Pd‐catalyzed decarboxylative asymmetric protonation (DAP) has been developed for sterically hindered tetrahydro‐4H‐pyran‐4‐one derived α‐aryl‐β‐keto esters. A substrate scope of nine examples of DAP showed that substrates containing a di‐ortho methoxy substitution pattern on the aryl ring gave rise to the highest enantioselectivities of up to 85 ...
Fionn McNeill   +5 more
wiley   +1 more source

Production of polyphenol extracts from grape bagasse using supercritical fluids: Yield, extract composition and economic evaluation

open access: yes, 2015
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)The objective of this work was to determine the economic feasibility of large-scale operations of supercritical fluid ...
Farias-Campomanes, AM   +2 more
core   +1 more source

Coated and Immobilized Polysaccharides‐Based Stationary Phases for Planar Metallocenes Enantioseparation in Liquid Chromatography

open access: yesELECTROPHORESIS, EarlyView.
This study examined 21 new ferrocene and ruthenocene derivatives, including those with planar and central chirality. Their stereochemical behavior was examined using UV‐detected normal‐phase liquid chromatography. Under fixed conditions, eight polysaccharide‐based chiral stationary phases were tested using n‐heptane combined with either 2‐propanol or ...
Florine Wartelle   +4 more
wiley   +1 more source

Is heat transfer governing chemical reactions in supercritical fluids?

open access: yes
A high pressure reactor calorimeter was developed to study chem. reactions in supercrit. fluids. Non-dimensional anal. of the heat transfer mechanism in the calorimeter verifies the application of the Nusselt correlation in scCO2. The reactor's cover and
Mantelis, Charalampos A.   +3 more
core   +1 more source

Supercritical Co2 Extraction Of Cumbaru Oil (dipteryx Alata Vogel) Assisted By Ultrasound: Global Yield, Kinetics And Fatty Acid Composition

open access: yes, 2016
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Cumbaru almond is obtained from a plant of the Brazilian Cerrado and contains elevated amount of oil.

core   +1 more source

Research progress on flexible MXene‐based materials in advanced energy storage devices: From preparation strategies to device applications

open access: yesFlexMat, EarlyView.
This review summarizes MXene synthesis and flexible electrode fabrication for FESDs, highlighting their potential owing to high conductivity and flexibility, and outlines future research directions. Abstract The rapid development of wearable and portable electronics has created demand for flexible energy storage systems (FESDs) that not only exhibit ...
Nanxi Miao   +10 more
wiley   +1 more source

Identifying liquidlike and gaslike states of dusty plasmas using isomorph theory

open access: yesPhysical Review Research
Equilibrium molecular dynamical simulations are performed to investigate the isomorphic properties of the supercritical liquidlike to gaslike transition in Yukawa fluids.
Ao Xu, Nichen Yu, Dong Huang, Yan Feng
doaj   +1 more source

Universal Two-Component Dynamics in Supercritical Fluids. [PDF]

open access: yesJ Phys Chem B, 2021
Sun P   +4 more
europepmc   +1 more source

Effect of pressure on enzymatic reactions in supercritical fluids

open access: yes, 1999
The use of supercritical fluids as reaction media for biocatalysed reactions can be considered a useful tool to modulate enzymatic performance modifying solvent physico-chemical properties.
SORO, Simonetta   +3 more
core  

Home - About - Disclaimer - Privacy