SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "LAR1:miun ;pers:(Högberg Hans Erik);srt2:(1995-1999)"

Sökning: LAR1:miun > Högberg Hans Erik > (1995-1999)

  • Resultat 1-10 av 21
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  •  
3.
  •  
4.
  • Berglund, Per, et al. (författare)
  • Alcohols as enantioselective inhibitors in a lipase catalysed esterification of a chiral acyl donor
  • 1995
  • Ingår i: Biotechnology Letters. - 01415492 (ISSN). ; 17:1, s. 55-60
  • Tidskriftsartikel (refereegranskat)abstract
    • Increased reaction rates and increased enantioselectivities were observed with decreased concentrations of n-alkanols when resolving 2-methyldecanoic acid by esterification catalysed by immobilised lipase from Candida rugosa at controlled water activities in cyclohexane. The enantioselectivity was found to be independent of the water activity in the reaction medium at the n-heptanol concentrations investigated. However, when n-decanol was used as the acyl acceptor, not only the alcohol concentration but also the water activity in the reaction medium, influenced the enantioselectivity. The results obtained showed that the low enantioselectivity seen at a high alcohol concentration could be explained by the alcohol influencing the apparent V(max)(S) and V(max)(R) differently.
  •  
5.
  •  
6.
  •  
7.
  • Edlund, Håkan, et al. (författare)
  • Resolution of 2-Methylalkanoic Acids : Enantioselective Esterification with Long Chain Alcohols Catalysed by Candida rugosa Lipase
  • 1996
  • Ingår i: Acta Chemica Scandinavica. - 0904-213X. ; 50:8, s. 666-671
  • Tidskriftsartikel (refereegranskat)abstract
    • Candida rugosa lipase catalysed resolutions of 2-methylalkanoic acids run on a large scale often display decreased enantiomeric rations (E-values) and reaction rates compared with small-scale experiments. By continuous control of the water activity (addition of inorganic salt/hydrated salt mixtures) this can be avoided. The importance of the proper choice of alcohol as well as its concentration is demonstrated. (R)-2-Methyloctanoic acid (8.6g) and (S)-2-methyl-1-octanol (4.5 g), both in 99.6% ee were prepared from 20 g racemic 2-methyloctanoic acid. © Acta Chemica Scandinavica 1996.
  •  
8.
  •  
9.
  • Högberg, Hans-Erik (författare)
  • Alkylation of Amide Enolates
  • 1995
  • Ingår i: Methoden der organischen Chemie : Additional and supplementary volumes of the 4th edition ; Vol. E21, Stereoselective synthesis. - 3-13-219504-9 ; s. 791-915
  • Bokkapitel (övrigt vetenskapligt)
  •  
10.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 21
 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy