Search for dissertations about: "Atropisomers"

Showing result 1 - 5 of 6 swedish dissertations containing the word Atropisomers.

2. 1. Analysis of PCBs with special emphasis on comprehensive two-dimensional gas chromatography of atropisomers

   Author : Mikael Harju; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Environmental chemistry; PCB; Atropisomers; Chiral; GC×GC; Enantiomeric barriers; Seal; polar; shape selective; Cyclodextrin; 2D; ECD; FID; TOF-MS; Comprehensive two-dimensional GC; Miljökemi; Environmental chemistry; Miljökemi; analytisk kemi; Analytical Chemistry;

   Abstract : There are 209 PCB congeners, 136 of which have been found in technical PCB mixtures and hence may be found in the environment as a result of either intentional or unintentional release. The identification and quantification of the congeners are difficult due to analytical bias from coeluting PCBs and other persistent organic pollutants. READ MORE

4. 2. Atropisomers of PCB methyl sulfone metabolites : radiosynthesis, analysis and distribution

   Author : Christina Larsson; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Miljögifter;

   Abstract : .... READ MORE

5. 3. Serotonergic aporphine derivatives : Synthesis and structure-activity relationships

   Author : Tero Linnanen; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi; Organic Pharmaceutical Chemistry; organisk farmaceutisk kemi;

   Abstract : Novel series of well-characterized and stereochemically pure 11-substituted (R)-aporphine derivatives have been prepared and their interaction with serotonin 5-HT7 and 5-HT1A receptors and dopamine D2A and D1 receptors have been studied. Efficient palladium catalyzed reactions were utilized for the diastereoselective synthesis of atropisomers as well as for the synthesis of several of the other (R)-aporphine derivatives. READ MORE

6. 4. New Techniques for Chiral Separations

   Author : Jeanette Olsson; Lars Blomberg; Steen Honoré Hansen; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; analytical chemistry; chiral separation; GC; CE; CEC; Analytical chemistry; Analytisk kemi; Kemi; Chemistry;

   Abstract : Gas chromatography (GC) has been utilized for the study of enantiomer resolution of the atropisomers of PCBs, o,p´-DDD and o,p´-DDT. Different substituents and concentrations of cyclodextrin, capillary dimensions and type of stationary phase films have been investigated to achieve the resolution of as many of the atropisomers on one column as possible. READ MORE

7. 5. Bis(4-chlorophenyl) sulfone and PCB methyl sulfone metabolites : Trends and chirality in the Baltic Sea environment

   Author : Karin Norström; Åke Bergman; Mats Olsson; Roland Kallenborn; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; bis 4-chlorophenyl sulfone; PCB methyl sulfone; Baltic Sea; Environmental chemistry; Miljökemi;

   Abstract : The Baltic Sea was earlier identified as a highly polluted brackish water body and still is. The high concentrations of polychlorinated biphenyls (PCBs), p,p’-DDT and related compounds led to severe effects on several species in the Baltic region. READ MORE