Results 11 to 20 of about 1,330 (177)

Advances in the Different Synthetic Routes of Fluorinated Hydrazines. [PDF]

open access: yesChem Rec
This review highlights the various routes to the preparation of fluorinated hydrazines, thereby promoting the exploration of innovative methods for the synthesis of new N‐fluorinated hydrazines. Their synthesis mainly involves synthetic routes such as organometallic, organocatalytic, and photocatalytic.
Kyrko D, Crousse B.
europepmc   +2 more sources

Cs2CO3-Initiated Trifluoro-Methylation of Chalcones and Ketones for Practical Synthesis of Trifluoromethylated Tertiary Silyl Ethers

open access: yesMolecules, 2017
It was found that 1,2-trifluoromethylation reactions of ketones, enones, and aldehydes were easily accomplished using the Prakash reagent in the presence of catalytic amounts of cesium carbonate, which represents an experimentally convenient, atom ...
Cheng Dong   +6 more
doaj   +1 more source

Progress in copper-catalyzed trifluoromethylation

open access: yesBeilstein Journal of Organic Chemistry, 2018
The introduction of trifluoromethyl groups into organic molecules has attracted great attention in the past five years. In this review, we describe the recent efforts in the development of trifluoromethylation via copper catalysis using nucleophilic ...
Guan-bao Li   +3 more
doaj   +1 more source

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

Dye-incorporated coordination polymers for direct photocatalytic trifluoromethylation of aromatics at metabolically susceptible positions

open access: yesNature Communications, 2018
Direct trifluoromethylation of unactivated aromatic rings at metabolically susceptible positions is highly desirable in pharmaceutical fields.
Tiexin Zhang   +4 more
doaj   +1 more source

Advances in [18F]Trifluoromethylation Chemistry for PET Imaging

open access: yesMolecules, 2021
Positron emission tomography (PET) is a preclinical and clinical imaging technique extensively used to study and visualize biological and physiological processes in vivo.
Felix Francis, Frank Wuest
doaj   +1 more source

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

open access: yesAngewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera   +2 more
wiley   +2 more sources

Pd/C‐Catalyzed Hydrogenation of CF3‐, CF2H‐, and CF2CO2Et‐containing Pyridines: A Robust Method for Highly Functionalized containing Piperidines

open access: yesAngewandte Chemie, EarlyView.
A robust and efficient method to access diversely functionalized fluorinated piperidines was developed. The approach features the hydrogenation of polysubstituted pyridines bearing CF3, CF2H, and CF2CO2Et substituents using an inexpensive, readily available heterogeneous Pd/C catalyst under air‐ and moisture‐tolerant conditions, offering an appealing ...
Thibaud Charvillat   +7 more
wiley   +2 more sources

Direct C–H trifluoromethylation of di- and trisubstituted alkenes by photoredox catalysis

open access: yesBeilstein Journal of Organic Chemistry, 2014
Background: Trifluoromethylated alkene scaffolds are known as useful structural motifs in pharmaceuticals and agrochemicals as well as functional organic materials.
Ren Tomita   +3 more
doaj   +1 more source

Harnessing the Reactivity of Sulfinate Salts With Cystine: An Umpolung Approach to Residue‐Specific Peptide Modification

open access: yesAngewandte Chemie, EarlyView.
While cysteine is widely employed as a nucleophilic handle for peptide modification, the electrophilicity of the oxidized form, cystine, is rarely exploited. This study describes a mild, photochemical coupling of sulfinate salts with peptide disulfides.
Joshua M. Hammond   +7 more
wiley   +2 more sources

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