Sökning: "organic salts"

Visar resultat 1 - 5 av 87 avhandlingar innehållade orden organic salts.

1. 1. Iodonium Salts : Preparation, Chemoselectivity and Metal-Catalyzed Applications

   Författare :Joel Malmgren; Berit Olofsson; Jérome Waswer; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Diaryliodonium salts; chemoselectivity; heterogeneous catalysis; organisk kemi; Organic Chemistry;

   Sammanfattning : This thesis concerns the preparation and use of diaryliodonium salts. In Project I various unsymmetrical diaryliodonium salts were reacted with three different nucleophiles in order to study the chemoselectivity of the reactions of the salts. LÄS MER

3. 2. Diaryliodonium Salts : Development of Synthetic Methodologies and α-Arylation of Enolates

   Författare :Marcin Bielawski; Berit Olofsson; Antonio Togni; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hypervalent Iodine Compounds; One-Pot Synthesis; Regiospecific Synthesis; Aromatic Substitution; Aryl Iodides; Arenes; Boronic Acids; Heteroaromatics; Arylations; Reaction Mechanisms; Density Functional Calculations; Large Scale Synthesis; Organic synthesis; Organisk syntes; organisk kemi; Organic Chemistry;

   Sammanfattning : This thesis describes novel reaction protocols for the synthesis of diaryliodonium salts and also provides an insight to the mechanism of α-arylation of carbonyl compounds with diaryliodonium salts.  The first chapter gives a general introduction to the field of hypervalent iodine chemistry, mainly focusing on recent developments and applications of diaryliodonium salts. LÄS MER

4. 3. Diaryliodonium Salts : Synthesis, Applications and Computational Investigations

   Författare :Marcus Reitti; Berit Olofsson; Michael Greaney; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; diaryliodonium salt; hypervalent iodine; density functional theory; aryne; phenol; nitroarene; organisk kemi; Organic Chemistry;

   Sammanfattning : Organic chemists have the ability to create complex organic molecules by connecting molecular building blocks in different ways. To name a few, these molecules are used as medicines, pesticides or in our household electronics, and are therefore crucial to life as we know it. LÄS MER

5. 4. Metal‐Free Arylations of Oxygen and Nitrogen Nucleophiles : Applications of Diaryliodonium Salts

   Författare :Elin Stridfeldt; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; arylation; aryloxyamines; cyclization; diaryliodonium salts; O-aryloximes; sigmatropic rearrangement;

   Sammanfattning : This thesis concerns development of new methods for metal‐free arylations in organic synthesis. The protocols discussed in the thesis are based on a class of hypervalent iodine compounds called diaryliodonium salts. These reagents are known to transfer aryl moieties to suitable nucleophiles. LÄS MER

7. 5. Unsymmetrical Diaryliodonium Salts : Development and Chemoselectivity studies

   Författare :Joel Malmgren; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The first part describes a chemoselectivity study on diaryliodonium salts where oxygen, nitrogen and carbon nucleophiles have been arylated. Twelve different unsymmetric phenyl(aryl)iodonium salts were designed with a systematic variation of the steric and electronic properties of the aryl group. LÄS MER