Results 21 to 30 of about 2,771,586 (165)

Reagent-Controlled Highly Stereoselective Difluoromethylation: Efficient Access to Chiral α-Difluoromethylamines from Ketimines

open access: yesMolecules, 2022
A reagent-controlled highly stereoselective reaction between (S)-difluoromethyl phenyl sulfoximine 1 and imines is reported, and this synthetic method provides a variety of enantiomerically enriched α-difluoromethyl amines. The main pros of this approach
Qinghe Liu   +3 more
doaj   +1 more source

Oxidation of difluorocarbene and subsequent trifluoromethoxylation

open access: yesNature Communications, 2019
Difluorocarbene is a versatile and efficient intermediate for fluorine incorporation. Here, the authors show that difluorocarbene can be oxidized to carbonyl fluoride and this process is confirmed in 18O-trifluoromethoxylation reactions, by observation ...
Jiao Yu   +4 more
doaj   +1 more source

Nickel-catalyzed alkyl-arylation of 3,3,3-trifluoropropene

open access: yesCommunications Chemistry, 2022
3,3,3-Trifluoropropene is a cost-efficient precursor for the preparation of trifluoromethylated compounds, but limited methods for its efficient transformation have been reported.
Chang Xu   +3 more
doaj   +1 more source

Deoxygenative gem-difluoroolefination of carbonyl compounds with (chlorodifluoromethyl)trimethylsilane and triphenylphosphine

open access: yesBeilstein Journal of Organic Chemistry, 2014
Background: 1,1-Difluoroalkenes cannot only be used as valuable precursors for organic synthesis, but also act as bioisosteres for enzyme inhibitors. Among various methods for their preparation, the carbonyl olefination with difluoromethylene phosphonium
Fei Wang   +3 more
doaj   +1 more source

Visible-light-induced nickel-catalyzed α-hydroxytrifluoroethylation of alkyl carboxylic acids: Access to trifluoromethyl alkyl acyloins

open access: yesBeilstein Journal of Organic Chemistry, 2023
A visible-light-induced nickel-catalyzed cross coupling of alkyl carboxylic acids with N-trifluoroethoxyphthalimide is described. Under purple light irradiation, an α-hydroxytrifluoroethyl radical generated from a photoactive electron donor–acceptor ...
Feng Chen   +4 more
doaj   +1 more source

Organofluorine Compounds in Biology and Medicine

open access: yes, 2015
This book covers topics on biochemically relevant organofluorine compounds and their synthesis and biochemical pathways. Organofluorine compounds have renewed interest in pharmaceutical industry, and therefore a concise book on this topic is highly ...
Reddy, V. Prakash   +2 more
core   +1 more source

Flow microreactor synthesis in organo-fluorine chemistry

open access: yesBeilstein Journal of Organic Chemistry, 2013
Organo-fluorine compounds are the substances of considerable interest in various industrial fields due to their unique physical and chemical properties.
Hideki Amii   +2 more
doaj   +1 more source

The xanthate route to organofluorine derivatives. A brief account

open access: yes, 2016
International audienceThe present account summarises routes to organofluorine derivatives based on the chemistry of xanthates developed in the author's laboratory.
Zard, Samir Z
core   +1 more source

Organofluorine Mass Balance and Per- and Polyfluoroalkyl Substance Analysis of Environmental Samples and Human Blood

open access: yes, 2021
Per- and polyfluoroalkyl substances (PFAS) have been linked to a range of negative health and environmental effects. Regulations limiting and/or banning the use of some of the legacy compounds have been introduced. Consequently, the production and use of
Aro, Rudolf
core   +2 more sources

Understanding the mechanism of Pd-catalyzed allylic substitution of the cyclic difluorinated carbonates

open access: yesBeilstein Journal of Organic Chemistry, 2008
We present a mechanistic investigation of Pd-catalyzed allylic substitution of cyclic gem-difluorinated carbonates 1 and 4, previously employed in the synthesis of 3',3'-difluoro-2'-hydroxymethyl-4',5'-unsaturated carbocyclic nucleosides in 17 steps. The
Jun Xu, Xiao-Long Qiu, Feng-Ling Qing
doaj   +1 more source

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