Results 21 to 30 of about 836 (184)

Sulfone Electrophiles in Cross-Electrophile Coupling: Nickel-Catalyzed Difluoromethylation of Aryl Bromides. [PDF]

open access: yesACS Catal
Fluoroalkyl fragments have played a critical role in the design of pharmaceutical and agrochemical molecules in recent years due to the enhanced biological properties of fluorinated molecules compared to their non-fluorinated analogues.
Chi BK   +5 more
europepmc   +3 more sources

Nickel-catalyzed Difluoromethylation of Alkene using Difluoroacetic Anhydride [PDF]

open access: yes, 2023
Herein, we describe a nickel-catalyzed reductive difluoromethylation reaction of alkene using inexpensive and easy-to-handle DFAA/pyridine N-oxide reagent system.
Hui, Chen, Xuebin, Liao, Zhenkang, Ai
core   +2 more sources

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

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

Late-stage difluoromethylation: concepts, developments and perspective [PDF]

open access: yes, 2021
This review describes the recent advances made in difluoromethylation processes based on X–CF2H bond formation where X is C(sp), C(sp2), C(sp3), O, N or S, a field of research that has benefited from the invention of multiple difluoromethylation reagents.
Trabanco, Andrés A   +6 more
core   +1 more source

Facile Entry to Pharmaceutically Important 3-Difluoromethyl-quinoxalin-2-ones Enabled by Visible-Light-Driven Difluoromethylation of Quinoxalin-2-ones

open access: yesPharmaceuticals, 2022
CF2H moiety has a significant potential utility in drug design and discovery, and the incorporation of CF2H into biologically active molecules represents an important and efficient strategy for seeking lead compounds and drug candidates.
Kai-Zhong Fu   +4 more
doaj   +1 more source

A New Reagent for Direct Difluoromethylation

open access: yes, 2016
Molecular scaffolds containing alkylfluorine substituents are desired in many areas of chemical research from materials to pharmaceuticals. Herein, we report the invention of a new reagent (Zn­(SO2CF2H)2, DFMS) for the innate difluoromethylation of ...
Ryan D. Baxter (1247007)   +7 more
core   +4 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

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

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

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