Sökning: "Ester Östlund"

Hittade 2 uppsatser innehållade orden Ester Östlund.

1. 1. Synthesis of highly substituted dienes via silaboration and crosscouplingreactions

   Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

   Författare :Viktor Östlund; [2012]
   Nyckelord :;

   Sammanfattning : A synthetic approach to highly substituted dienes has been investigated. In a four step synthesis, a wide range of molecules can be formed: Sonogashira coupling between an alkyne and a bromoalkene, silaboration of the newly formed enyne, Suzuki‐Miyaura coupling to exchange the boronic ester moiety, and silver(I) oxide activated crosscoupling to replace the silicon atom. LÄS MER

3. 2. Development of a Multiresidue Method for Analysis of Acidic Pesticides in Cereals with Liquid Chromatography-Tandem Mass Spectrometry

   Magister-uppsats, Akademin för hållbar samhälls- och teknikutveckling

   Författare :Lena Östlund; [2009]
   Nyckelord :Pesticides; liquid chromatography; tandem mass spectrometry; phenoxy acids; phenoxy esters;

   Sammanfattning : A new method for analysis of acidic herbicides, mostly phenoxy acids and their esters, in cereals with liquid chromatography-tandem quadrupole mass spectrometry (LS-MS/MS) has been developed. Samples were hydrolyzed with sodium hydroxide in order to release covalently bound compounds followed by neutralization and finally extraction with acidified ethyl acetate. LÄS MER