Results 21 to 30 of about 887 (145)

Efficient mechanochemical synthesis of new fluorinated Schiff bases: a solvent-free, alternative to conventional method with mercury adsorption properties [PDF]

open access: yesBMC Chemistry
The development of sustainable synthetic techniques is of critical importance in modern chemistry. This paper describes a mechanochemical approach to the synthesis of novel fluorinated Schiff bases via ball milling, which provides a fast, high-yield, and
Mirza T. Baig   +7 more
doaj   +2 more sources

4,4′-(((Perfluoropropane-2,2-diyl)bis(4,1-phenylene))bis(oxy))-bis(2,3,5,6-tetrafluoropyridine)

open access: yesMolbank, 2023
The title compound was synthesized in near-quantitative yield using nucleophilic aromatic substitution of 4,4′-(hexafluoroisopropylidene)diphenol (BPAF) with perfluoropyridine (PFP). The purity and structure were determined by NMR (1H, 13C, 19F), GC–EIMS,
Katelyn D. Thompson   +3 more
doaj   +1 more source

4-(4-(2-Bromoethyl)phenoxy)-2,3,5,6-tetrafluoropyridine

open access: yesMolbank, 2023
The title compound was synthesized in near quantitative yields via initial nucleophilic aromatic substitution of pentafluoropyridine (PFP) with 4-(2-bromoethyl)phenol as a versatile precursor for ionic liquids (ILs).
Tiffany H. Li   +4 more
doaj   +1 more source

Flavin Catalysts in Organic Synthesis

open access: yesAngewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

Direct electrophilic N-trifluoromethylthiolation of amines with trifluoromethanesulfenamide

open access: yesBeilstein Journal of Organic Chemistry, 2013
The CF3SN moiety is a substituent with interesting properties. However, there is no easy synthetic access to molecules bearing this group. The trifluoromethanesulfenamide is a new reagent for the electrophilic trifluoromethylthiolation which reacts ...
Sébastien Alazet   +2 more
doaj   +1 more source

Cu-Mediated trifluoromethylation of benzyl, allyl and propargyl methanesulfonates with TMSCF3

open access: yesBeilstein Journal of Organic Chemistry, 2013
A Cu-mediated trifluoromethylation of benzyl, allyl and propargyl methanesulfonates with TMSCF3 was developed for the first time. This method offers a convenient and economical approach to various trifluoroethyl-containing compounds.
Xueliang Jiang, Feng-Ling Qing
doaj   +1 more source

A one-pot synthesis of 3-trifluoromethyl-2-isoxazolines from trifluoromethyl aldoxime

open access: yesBeilstein Journal of Organic Chemistry, 2013
Functionalized 3-trifluoromethyl-2-isoxazolines and 3-trifluoromethylisoxazoles were easily prepared from trifluoromethyl aldoxime 2 under mild conditions by using DIB as oxidant.
Raoni S. B. Gonçalves   +4 more
doaj   +1 more source

Modulating NHC catalysis with fluorine

open access: yesBeilstein Journal of Organic Chemistry, 2013
Fluorination often confers a range of advantages in modulating the conformation and reactivity of small molecule organocatalysts. By strategically introducing fluorine substituents, as part of a β-fluoroamine motif, in a triazolium pre-catalyst, it was ...
Yannick P. Rey, Ryan Gilmour
doaj   +1 more source

Stereoselectively fluorinated N-heterocycles: a brief survey

open access: yesBeilstein Journal of Organic Chemistry, 2013
The stereoselective incorporation of fluorine atoms into N-heterocycles can lead to dramatic changes in the molecules’ physical and chemical properties.
Xiang-Guo Hu, Luke Hunter
doaj   +1 more source

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