SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Prestat Guillaume) "

Sökning: WFRF:(Prestat Guillaume)

  • Resultat 1-2 av 2
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Bantreil, Xavier, et al. (författare)
  • γ- and δ-lactams through palladium-catalyzed intramolecular allylic alkylation: enantioselective synthesis, NMR Investigation, and DFT rationalization.
  • 2011
  • Ingår i: Chemistry - A European Journal. - : Wiley. - 1521-3765 .- 0947-6539. ; 17:10, s. 2885-96
  • Tidskriftsartikel (refereegranskat)abstract
    • The Pd-catalyzed intramolecular allylic alkylation of unsaturated amides to give γ- and δ-lactams has been studied in the presence of chiral ligands. Ligand (R)-3,5-tBu-MeOBIPHEP (MeOBIPHEP = 6,6'-dimethoxybiphenyl-2,2-diyl)bis(diphenylphosphine)) afforded the best results and allowed the cyclization reactions to take place in up to 94:6 enantiomeric ratio. A model Pd-allyl complex has been prepared and studied through NMR spectroscopic analysis, which provided insight into the processes responsible for the observed enantiomeric ratios. DFT studies were used to characterize the diastereomeric reaction pathways. The calculated energy differences were in good agreement with the experimentally observed enantiomeric ratios.
  •  
2.
  • Kleimark, Jonatan, 1982, et al. (författare)
  • Palladium-Catalyzed Allylic Sulfinylation and the Mislow-Braverman-Evans Rearrangement.
  • 2011
  • Ingår i: Chemistry - A European Journal. - : Wiley. - 1521-3765 .- 0947-6539. ; 17, s. 13963-13965
  • Tidskriftsartikel (refereegranskat)abstract
    • A product quick-step: The Mislow-Braverman-Evans (MBE) rearrangement and the synthesis of sulfoxides through allylic sulfinylation have been studied. A viable DFT method for treatment of the sulfoxide-sulfenate equilibrium is presented and the ability of Pd to enhance the rate of the MBE rearrangement is shown. Of the four possible nucleophilic attacks, the two leading to the observed product are strongly preferred.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-2 av 2

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy