Sökning: "aromatic substitution reaction"
Visar resultat 1 - 5 av 26 avhandlingar innehållade orden aromatic substitution reaction.
1. Computer-Assisted Organic Synthesis. Addition to Carbonyl Carbons and Aromatic Substitution
Sammanfattning : This thesis concerns the computer-assisted modelling of additions to ketones and aromatic substitution, and how this modelling can be used within an existing program for synthesis planning. I include a review of existing computer-assisted organic synthesis (CAOS) programs, and discuss how some of these programs deal with knowledge representation. LÄS MER
2. On the mechanism of electrophilic aromatic substitution : an investigation by means of the effect of isotopic mass on reaction velocity
Sammanfattning : .... LÄS MER
3. Diaryliodonium Salts : Development of Synthetic Methodologies and α-Arylation of Enolates
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. Palladium-catalyzed aromatic coupling and allylic substitution
Sammanfattning : Different types of palladium(II)-catalyzed aromatic couplingreactions have been investigated.The cyclization of diphenyl ether was found to be moresensitive to reaction conditions than was the cyclization ofthe diphenylamine derivatives. LÄS MER
5. Quantum Chemical Studies of Aromatic Substitution Reactions
Sammanfattning : In this thesis, density functional theory (DFT) is used to investigate the mechanisms and reactivities of electrophilic and nucleophilic aromatic substitution reactions (SEAr and SNAr respectively). For SEAr, the σ-complex intermediate is preceded by one (halogenation) or two (nitration) π-complex intermediates. LÄS MER