64600-22-2Relevant academic research and scientific papers
Fluoride ion-assisted cross-coupling reactions of (α-fluorovinyl)diphenylmethylsilane with aryl iodides catalyzed by Pd(0)/Cu(I) systems
Hanamoto,Kobayashi,Kondo
, p. 281 - 283 (2001)
The palladium-catalyzed cross-coupling reactions of (αfluorovinyl)diphenylmethylsilane with organic halides in the presence of Cu(I) halide afford good yields of α-fluorovinyl organic compounds.
Gold N-Heterocyclic Carbene Catalysts for the Hydrofluorination of Alkynes Using Hydrofluoric Acid: Reaction Scope, Mechanistic Studies and the Tracking of Elusive Intermediates
Bédard, Sandrine,Cavallo, Luigi,Falivene, Laura,Gauthier, Rapha?l,Nolan, Steven P.,Paquin, Jean-Fran?ois,Saab, Marina,Tzouras, Nikolaos V.,Van Hecke, Kristof,Zhang, Ziyun
, (2021/12/09)
An efficient and chemoselective methodology deploying gold-N-heterocyclic carbene (NHC) complexes as catalysts in the hydrofluorination of terminal alkynes using aqueous HF has been developed. Mechanistic studies shed light on an in situ generated catalyst, formed by the reaction of Br?nsted basic gold pre-catalysts with HF in water, which exhibits the highest reactivity and chemoselectivity. The catalytic system has a wide alkyl substituted-substrate scope, and stoichiometric as well as catalytic reactions with tailor-designed gold pre-catalysts enable the identification of various gold species involved along the catalytic cycle. Computational studies aid in understanding the chemoselectivity observed through examination of key mechanistic steps for phosphine- and NHC-coordinated gold species bearing the triflate counterion and the elusive key complex bearing a bifluoride counterion.
Overcoming AlbD Protease Resistance and Improving Potency: Synthesis and Bioactivity of Antibacterial Albicidin Analogues with Amide Bond Isosteres
Kleebauer, Leonardo,Zborovsky, Lieby,Hommernick, Kay,Seidel, Maria,Weston, John B.,Süssmuth, Roderich D.
supporting information, p. 7023 - 7027 (2021/09/08)
Albicidin is a potent antibacterial oligoaromatic peptide that is susceptible to the protease AlbD, a resistance factor. This potentially restricts the use of albicidin as a drug. To overcome this obstacle, we synthesized and evaluated six analogues with
Fluorinated cyclopropanes: Synthesis and chemistry of the aryl α,β,β-trifluorocyclopropane motif
Thomson, Connor J.,Zhang, Qingzhi,Al-Maharik, Nawaf,Bühl, Michael,Cordes, David B.,Slawin, Alexandra M. Z.,O'Hagan, David
, p. 8415 - 8418 (2018/08/04)
A general route to aryl α,β,β-trifluorocyclopropanes is reported and aryl oxidation gave the corresponding α,β,β-trifluorocyclopropane carboxylic acid. Reactions of the corresponding amides with phenol/thiophenol resulted in HF elimination and then conjugate addition. The partially fluorinated cyclopropane has a similar lipophilicity to -CF3 despite three carbon atoms, and it emerges as a novel motif for drug discovery.
Expedient synthesis of α-substituted fluoroethenes
Mandal, Samir K.,Ghosh, Arun K.,Kumar, Rakesh,Zajc, Barbara
, p. 3164 - 3167 (2012/06/04)
A mild and efficient synthesis of 1-aryl-1-fluoroethenes from benzothiazolyl (aryl)fluoromethyl sulfones and paraformaldehyde, under DBU- or Cs2CO3-mediated conditions at room temperature, is described. A comparable diethyl fluoro(naphthalen-2-yl)methylphosphonate reagent does not react with paraformaldehyde under these mild conditions. The utility of the methodology for synthesis of terminal α-fluoroalkenes bearing electron-withdrawing functionalities is also shown.
Cross-coupling reactions of (1-fluorovinyl)methydiphenylsilane with aryl halides and aryl triflates
Hanamoto, Takeshi,Kobayashi, Tomoko
, p. 6354 - 6359 (2007/10/03)
The cesium fluoride (CsF)-assisted cross-coupling reaction of (1-fluorovinyl)methyldiphenylsilane (1) with aryl halides and aryl triflates was examined. The reaction with aryl iodides smoothly proceeded to afford the corresponding (1-fluorovinyl)arenes in the presence of a catalytic amount of CuI and Pd(PPh3)4 in aprotic polar solvents such as DMF, DMI, DMA, and NMP in good yields. A variety of functional groups (nitro, ester, ketone, and ether) on the aromatic rings can be tolerated under these mild conditions. Aryl iodides are superior to aryl bromides as the coupling reaction partner. The cross-coupling reaction of 1 with aryl triflates instead of aryl halides was also accomplished in the presence of tetrabutylammonium iodide (n-Bu4NI) as the additive under similar conditions.
