Search for dissertations about: "aromatic substitution reaction"

Showing result 1 - 5 of 26 swedish dissertations containing the words aromatic substitution reaction.

  2. 1. Computer-Assisted Organic Synthesis. Addition to Carbonyl Carbons and Aromatic Substitution

    Author : Ingvar Lagerstedt; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CAOS; torsional strain; selectivity; aromatic substitution reaction;

    Abstract : 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. READ MORE

  4. 2. On the mechanism of electrophilic aromatic substitution : an investigation by means of the effect of isotopic mass on reaction velocity

    Author : Lars Melander; Stockholms högskola; []
    Keywords : ;

    Abstract : .... READ MORE

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

    Author : Marcin Bielawski; Berit Olofsson; Antonio Togni; Stockholms universitet; []
    Keywords : 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;

    Abstract : 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. READ MORE

  6. 4. Palladium-catalyzed aromatic coupling and allylic substitution

    Author : Helena Hagelin; KTH; []
    Keywords : ;

    Abstract : 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. READ MORE

  7. 5. Quantum Chemical Studies of Aromatic Substitution Reactions

    Author : Magnus Liljenberg; Tore Brinck; Leif Eriksson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Abstract : 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. READ MORE