Results 71 to 80 of about 836 (184)

S-, N-, and Se-difluoromethylation using sodium chlorodifluoroacetate

open access: yes, 2013
A simple protocol for the difluoromethylation of thiols is reported using chlorodifluoroacetate as the difluoromethylating agent. This cheap reagent undergoes smooth decarboxylation at 95 C to afford difluorocarbene, which can be trapped with a variety ...
Greaney, Michael F., Mehta, Vaibhav P.
core   +1 more source

A tribute to Professor Dr Kai A. I. Zhang: pioneering advances in metal‐free polymeric photocatalysis

open access: yesPolymer International, Volume 75, Issue 1, Page 34-43, January 2026.
Polymeric photocatalysts have emerged as metal‐free materials with tunable structures. This review highlights the contributions of Professor Dr Kai A. I. Zhang in advancing polymer‐based photocatalysts. Abstract Polymeric photocatalysts have emerged as promising alternatives to traditional metal‐based catalysts due to their tunable properties, low cost
Bolormaa Bayarkhuu   +2 more
wiley   +1 more source

Difluoromethylsulfonyl Imidazolium Salt for Difluoromethylation of Alkenes

open access: yes
Herein, we describe the design and synthesis of a difluoromethylsulfonyl imidazolium salt, which can act as a radical difluoromethylation reagent to achieve the challenging amino- and oxy-difluoromethylation of alkenes.
Ji-Chang Xiao (1457842)   +2 more
core   +1 more source

Nucleophilic Difluoromethylation Using (Bromo­difluoro­methyl)­trimethyl­silane

open access: yes, 2016
A combination of (bromodifluoro­methyl)­trimethyl­silane (Me3SiCF2Br), triphenyl­phosphine, and DMPU serves as a source of difluorinated phosphorus ylide Ph3PCF2 under mild conditions.
Artem A. Zemtsov (1345587)   +4 more
core   +1 more source

Visible-light induced photocatalyst-free difluoromethylation of quinoxalinones with difluorosulfones

open access: yesGreen Synthesis and Catalysis
Visible-light induced direct C–H difluoromethylation of quinoxalinones with 2-((difluoromethyl)sulfonyl)benzo[d]thiazole has been developed for the first time.
Linlin Shi   +6 more
doaj   +1 more source

Carbonylative Transformations of Aryl Sulfonium Salts

open access: yesChemistry–Methods, Volume 5, Issue 12, November 2025.
Carbonyl derivatives are widely present in biologically active molecules, pharmaceuticals, natural products, and materials, and their synthesis has garnered much attention. Direct carbonylation of aromatic CH bonds is an effective tool for the synthesis of carbonyl compounds.
Yan‐Hua Zhao, Xiao‐Feng Wu
wiley   +1 more source

O-Difluoromethylation of 1,3-diones with S-difluoromethyl sulfonium salt

open access: yesRSC Advances, 2016
S -Difluoromethyl sulfonium salt was found to be a difluorocarbene precursor and direct difluoromethylation reagent in the O -difluoromethylation of 1,3-diones.
Chun-Bo Yue   +6 more
openaire   +1 more source

Chemoselective N‑Difluoromethylation of Functionalized Tertiary Amines

open access: yes, 2016
A practical, convenient, and general method for the difluoromethylation of tertiary amines, using diethyl bromo­difluoro­methyl­phosphonate and fluoride, is described.
Eytan Gershonov (2339623)   +6 more
core   +1 more source

Oxidant- and Base-Free, Copper-Catalyzed Difluoromethylation of Haloalkynes

open access: yes, 2023
We report herein a highly efficient copper-catalyzed protocol for the transformation of haloalkynes to the corresponding difluoromethylated alkynes.
Li Chen (5749)   +5 more
core   +1 more source

Radical (Phenylsulfonyl)difluoromethylation with Iododifluoromethyl Phenyl Sulfone

open access: yes, 2016
An unprecedented radical (phenylsulfonyl)difluoromethylation of terminal alkenes with PhSO2CF2I has been achieved by using Et3B/air as an initiator.
Lingui Zhu (1545934)   +4 more
core   +1 more source

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