Results 71 to 80 of about 836 (184)
S-, N-, and Se-difluoromethylation using sodium chlorodifluoroacetate
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
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
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
A combination of (bromodifluoromethyl)trimethylsilane (Me3SiCF2Br), triphenylphosphine, and DMPU serves as a source of difluorinated phosphorus ylide Ph3PCF2 under mild conditions.
Artem A. Zemtsov (1345587) +4 more
core +1 more source
Visible-light induced photocatalyst-free difluoromethylation of quinoxalinones with difluorosulfones
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
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 CH 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
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
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
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
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

