Results 11 to 20 of about 8,763 (265)

Anodic Fluorination and Cathodic Michael Addition of Schiff Bases Bearing Trifluoromethyl and Ester Groups

Electrochemistry, 2021
Anodic fluorination of N-(diphenylmethyleneamino)-2,2,2-trifluoroethane and N-[bis(methylthio)methyleneamino]-2,2,2-triphenylethane in acetonitrile containing poly(HF) salt ionic liquids afforded monofluorinated products in moderate to good yields.
Nanae IMAI, Shinsuke INAGI, Toshio FUCHIGAMI   +2 more
doaj   +1 more source

Selective Synthesis of Fluorinated Compounds: Process Development and Preparation of Fluorinated Compounds from Gram up to Kilogram Scale

CHIMIA, 2004
The most versatile fluorination reactions for the preparation of up to kg amounts of fluorinated compounds are presented, i.e. the deoxofluorination of alcohols, oxo compounds and carboxylic acids using SF4, and the conversion of anilines to ...
Heinz Steiner, Hans Meier
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, Zhong Wang, Robert I. Troup, Anaïs Goupille, Jean-Yves Le Questel, Charlene Fallan, James S. Scott, Elisabetta Chiarparin, Jérôme Graton, Bruno Linclau   +9 more
doaj   +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, Qingqing Chen, Xuelian Du, Liqiang Li, Peng Li   +4 more
doaj   +1 more source

Vergütung von Kunststoffen

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

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, Yan-Nan Lu, Dong-Qing Liang, Yin-Shuang Hu, Yu-Xi Huang   +4 more
doaj   +1 more source

Catalytic asymmetric nucleophilic fluorination using BF3·Et2O as fluorine source and activating reagent

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, Xiang Zhen, Jingyuan Wu, Yaping Cheng, Junkai An, Xingyu Ma, Jikun Liu, Yuji Qin, Hao Zhu, Jijun Xue, Xianxing Jiang   +10 more
doaj   +1 more source

Ring-opening fluorination via C–C bond cleavage: An efficient approach to diverse fluorinated molecules

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

Fluorination with Xenon Difluoride : Part X: Reactivity of Hexamethylbenzene

CHIMIA, 1976
Fluorination of hexamethylbenzene with xenon difluoride catalyzed by hydrogen fluoride resulted in pentamethylbenzyl fluoride, while fluorination in the presence of trifluoroacetic acid resulted in pentamethylbenzyl trifluoroacetate.
M. Zupan
doaj   +1 more source

Highly selective electrochemical fluorination of dithioacetal derivatives bearing electron-withdrawing substituents at the position α to the sulfur atom using poly(HF) salts

Beilstein Journal of Organic Chemistry, 2015
Anodic fluorination of dithioacetals bearing electron-withdrawing ester, acetyl, amide, and nitrile groups at their α-positions was comparatively studied using various supporting poly(HF) salts like Et3N·nHF (n = 3–5) and Et4NF·nHF (n = 3–5).
Bin Yin, Shinsuke Inagi, Toshio Fuchigami   +2 more
doaj   +1 more source