Results 21 to 30 of about 375 (147)

Nucleophilic Difluoromethylation of Primary Alkyl Halides Using Difluoromethyl Phenyl Sulfone as a Difluoromethyl Anion Equivalent. [PDF]

open access: yesChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
G K Surya, Prakash   +3 more
openaire   +2 more sources

Trifluoromethylated hydrazones and acylhydrazones as potent nitrogen-containing fluorinated building blocks

open access: yesBeilstein Journal of Organic Chemistry, 2023
Nitrogen-containing organofluorine derivatives, which are prepared using fluorinated building blocks, are among the most important active fragments in various pharmaceutical and agrochemical products. This review focuses on the reactivity, synthesis, and
Zhang Dongxu
doaj   +1 more source

Direct C–H difluoromethylation of heterocycles via organic photoredox catalysis

open access: yesNature Communications, 2020
Heterocycles containing difluoromethyl groups are molecules with potential application in pharmaceutical, agricultural and materials science. Here, the authors show an organophotocatalytic difluoromethylation of heterocycles using O2 as green oxidant and
Wei Zhang   +7 more
doaj   +1 more source

New Electrophilic Difluoromethylating Reagent [PDF]

open access: yesOrganic Letters, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
G K Surya, Prakash   +3 more
openaire   +2 more sources

Visible Light-Induced Radical Cascade Difluoromethylation/Cyclization of Unactivated Alkenes: Access to CF2H‑Substituted Polycyclic Imidazoles [PDF]

open access: yesACS Omega
Sheng-Nan Lin   +7 more
doaj   +2 more sources

3,3-Difluoroallyl ammonium salts: highly versatile, stable and selective gem-difluoroallylation reagents

open access: yesNature Communications, 2021
Synthesis of fluorinated organic molecules is of high interest for agrochemistry and pharmaceutics, but efficient and general reagents for introducing -CF2- groups are lacking.
Fei Ye   +5 more
doaj   +1 more source

(Sila)Difluoromethylation of Fluorenyllithium with CF3H and CF3TMS

open access: yesSynOpen, 2018
Difluoromethylation of the C9-H site of the fluorene ring using lithium base and fluoroform (CF3H), which is one of the most cost-effective difluoromethylating reagents, is attained to give difluoromethylated fluorenes with an all-carbon quaternary ...
Kenichi Maruyama   +2 more
doaj   +1 more source

Copper-based fluorinated reagents for the synthesis of CF2R-containing molecules (R ≠ F)

open access: yesBeilstein Journal of Organic Chemistry, 2020
Over the years, the development of new methodologies for the introduction of various fluorinated motifs has gained a significant interest due to the importance of fluorine-containing molecules in the pharmaceutical and agrochemical industries. In a world
Louise Ruyet, Tatiana Besset
doaj   +1 more source

Enantioselective nucleophilic difluoromethylation of aromatic aldehydes with Me3SiCF2SO2Ph and PhSO2CF2H reagents catalyzed by chiral quaternary ammonium salts

open access: yesBeilstein Journal of Organic Chemistry, 2008
BackgroundAlthough the nucleophilic difluoromethylation of aldehydes, ketones, and imines has been realized with PhSO2CF2H and related reagents, there are still no reports on the enantioselective nucleophilic reactions.ResultsWith a chiral quaternary ...
Chuanfa Ni, Fang Wang, Jinbo Hu
doaj   +1 more source

Copper-catalyzed carbo-difluoromethylation of alkenes via radical relay

open access: yesNature Communications, 2021
Compounds that contain alkyl-difluoromethyl moieties are of interest for medicinal chemistry, but their synthesis is challenging. Here, the authors report a copper-catalyzed radical relay approach for the carbodifluoromethylation of alkenes that ...
Aijie Cai   +7 more
doaj   +1 more source

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