Results 21 to 30 of about 22,231 (296)
Regioselective fluorination in synthesis of deoxyfluoro quercitols from d-(−)-quinic acid [PDF]
, 2014 A facile synthesis of six new deoxyfluoro querciotls from d-(−)-quinic acid is described. The key steps involve the regioselective fluorination as well as highly stereoselective dihydroxylation.
Shih, Tzenge-Lien +1 more
core +1 more source
Electrophilic fluorination methodology [PDF]
, 2002 Chapter One This chapter reviews the historical background of the fluorination using both elemental fluorine and N-F reagents. It relates the properties and preparations of these electrophilic reagents.
Thomas, Emmanuelle Maitrise de Chimie
core +6 more sources
CHIMIA, 1968 The properties of plastics can be improved by a surface treatment. A number of known methods for the modification of the surface characteristics of polyethylene are discussed: heat treatment, chemical oxidation, Corona-discharge, electronic gun and ...
K. Tanner
doaj +1 more source
C(sp3)-H Fluorination with a Copper(II)/(III) Redox Couple [PDF]
, 2020 Despite the growing interest in the synthesis of fluorinated organic compounds, few methods are able to incorporate fluoride ion directly into alkyl C-H bonds.
Jamey, Bower +4 more
core +1 more source
Surface modification of polyethylene terephthalate films by direct fluorination
AIP Advances, 2018 Polyethylene terephthalate (PET) films were surface fluorinated in a reaction kettle using a F2/N2 blend with 12.5% F2 by volume for the different time of 15, 30, 60, and 90 min at the same temperature of 30 °C.
Yaqiang Liu +4 more
doaj +1 more source
Lipophilicity trends upon fluorination of isopropyl, cyclopropyl and 3-oxetanyl groups
Beilstein Journal of Organic Chemistry, 2020 A systematic comparison of lipophilicity modulations upon fluorination of isopropyl, cyclopropyl and 3-oxetanyl substituents, at a single carbon atom, is provided using directly comparable, and easily accessible model compounds.
Benjamin Jeffries +9 more
doaj +1 more source
Tetrahedron Chem, 2022 The unique and desirable properties of fluorinated compounds in pharmaceutical, agrochemical, and materials sciences have driven the development of remote fluorination methods.
Yen-Chu Lu, Julian G. West
doaj +1 more source
Accelerated Charge Dissipation by Gas-Phase Fluorination on Nomex Paper
Applied Sciences, 2019 The surface charge and space charge accumulation in paper used in oil−paper insulation system may distort electric field distribution and lead to the flashover and breakdown of insulation system.
Feipeng Wang +8 more
doaj +1 more source
Nature Communications, 2021 Catalytic asymmetric fluorination remains elusive, especially the longstanding stereochemical challenges which exist in BF3Et2O-based fluorinations. Here the authors show a catalytic asymmetric nucleophilic fluorination using BF3·Et2O as the fluorine ...
Weiwei Zhu +10 more
doaj +1 more source
Multi-Layered Branched Surface Fluorination on PVDF Membrane for Anti-Scaling Membrane Distillation
Membranes, 2022 Membrane distillation (MD) has emerged as a promising technology for hypersaline wastewater treatment. However, membrane scaling is still a critical issue for common hydrophobic MD membranes.
Yu-Jing Liu +4 more
doaj +1 more source