Sökning: "mechanistic studies"

Visar resultat 6 - 10 av 465 avhandlingar innehållade orden mechanistic studies.

1. 6. Mechanistic Studies on Ruthenium-Catalyzed Hydrogen Transfer Reactions

   Författare :Jenny B. Åberg; Jan-Erling Bäckvall; Charles P. Casey; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mechanistic studies; catalysis; ruthenium; hydrogen transfer; racemization; transfer hydrogenation; alcohols; ketones; amines; imines; inner-sphere; outer-sphere; solvent cage effect; Organic chemistry; Organisk kemi; organisk kemi; Organic Chemistry;

   Sammanfattning : Mechanistic studies on three different ruthenium-based catalysts have been performed. The catalysts have in common that they have been employed in hydrogen transfer reactions involving alcohols and ketones, amines and imines or both. LÄS MER

3. 7. Synthetic and Mechanistic Studies with Iodine(III) Reagents

   Författare :Ester Maria Di Tommaso; Berit Olofsson; Marcos Suero; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hypervalent iodine chemistry; organic synthesis; mechanistic studies; DFT; photocatalysis; Organic Chemistry; organisk kemi;

   Sammanfattning : This thesis describes the development of metal-free transformations and mechanistic studies on the reactivity of two classes of hypervalent iodine reagents: diaryliodonium salts and vinylbenziodoxolones (VBX). Recently, they have been recognized as valuable synthetic reagents with broad applicability in organic synthesis. LÄS MER

4. 8. Palladium-Catalyzed Nucleophilic Substitution of Alcohols : Mechanistic Studies and Synthetic Applications

   Författare :Supaporn Sawadjoon; Joseph Samec; Takao Ikariya; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; palladium; nucleophilic substitution; mechanism; Organic Chemistry; Organisk kemi;

   Sammanfattning : This thesis deals with the palladium-catalyzed nucleophilic substitution of π-activated alcohols in which the C–O bond of a non-manipulated hydroxyl group is cleaved. The thesis is divided in two chapters describing two different catalytic systems. LÄS MER

5. 9. Synthesis of C(sp2)-P bonds by palladium-catalyzed reactions : Mechanistic investigations and synthetic studies

   Författare :Marcin Kalek; Jacek Stawinski; Jean-Luc Montchamp; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi; Organic Chemistry; organisk kemi;

   Sammanfattning : This thesis focuses on synthetic and mechanistic aspects of palladium-catalyzed C(sp2)-P bond-forming reactions, with the aim to develop mild and efficient methods for the synthesis of biologically active phosphorus compounds, e.g. DNA analogs. LÄS MER

7. 10. Ruthenium-catalyzed hydrogen transfer involving amines and imines : Mechanistic studies and synthetic applications

   Författare :Joseph S M Samec; Jan-E Bäckvall; Jack R. Norton; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis deals with ruthenium-catalyzed hydrogen transfer involving amines and imines and is divided into two parts. In Part 1 a mechanistic study has been performed. LÄS MER