SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "LAR1:miun ;pers:(Högberg Hans Erik);pers:(Sjödin Kristina)"

Sökning: LAR1:miun > Högberg Hans Erik > Sjödin Kristina

  • Resultat 1-10 av 14
  • [1]2Nästa
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  •  
3.
  •  
4.
  •  
5.
  •  
6.
  • Högberg, Hans-Erik, et al. (författare)
  • Formation of hemiacetal esters in lipase-catalysed reactions of vinyl esters with hindered secondary alcohols
  • 2000
  • Ingår i: Tetrahedron Letters. - 0040-4039. ; 41:17, s. 3193-3196
  • Tidskriftsartikel (refereegranskat)abstract
    • Normally many lipases are efficient catalysts for the acetylation of alcohols with vinyl acetate. Unexpectedly, we found that some sterically hindered secondary alcohols react slowly to yield hemiacetal esters as mixtures of diastereomers. Their formation can be explained by the reaction of the alcohol with acetaldehyde that is produced by the lipase-catalysed splitting of vinyl acetate and subsequent acetylation of the resulting hemiacetal by the lipase.
  •  
7.
  • Isaksson, Dan, et al. (författare)
  • Enantiomerically enriched cryptone by lipase catalysed kinetic resolution
  • 2006
  • Ingår i: Tetrahedron: Asymmetry. - 0957-4166. ; 17:2, s. 275-280
  • Tidskriftsartikel (refereegranskat)abstract
    • Thiophenol was added to racemic cryptone (4-isopropyl-2-cyclohexene-1-one) and the resulting 1,4-addition products, cis- and trans-4-isopropyl-3-(phenylsulfanyl)cyclohexanone) were separated and the latter reduced to rac-1,3-cis-1,4-trans-4-isopropyl-3-(phenylsulfanyl)cyclo¬he¬xanol which was subjected to lipase catalysed resolution by acylation catalysed by CAL-B (Candida antarctica lipase B). The remaining alcohol was separated from the produced acetate, which was hydrolysed to the alcohol. The enantiomeric alcohols so obtained were oxidised. The initial products, probably sulfoxidoketones spontaneously decomposed to furnish enantiomerically enriched (R)- and (S)-cryptone with up to 76% and 98% ee, respectively.
  •  
8.
  •  
9.
  •  
10.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 14
  • [1]2Nästa
 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy