Search for dissertations about: "Electrophilic substitution"

Showing result 1 - 5 of 16 swedish dissertations containing the words Electrophilic substitution.

  2. 1. 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

  4. 2. Development of Palladium-Catalyzed Transformations Involving η1-Allypalladium Species

    Author : Niclas Solin; Kálmán Szabó; Antonio M. Echavarren; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Palladium; Homogenous catalysis; Allylation; Electrophilic substitution; Density functional calculations; Organic chemistry; Organisk kemi;

    Abstract : This thesis is focused on investigation of the structure, reactivity and isomerization reactions of η1-allylpalladium complexes, which are key intermediates in catalytic transformations. The first part of this thesis concerns the structure and reactivity of bis-allylpalladium complexes. READ MORE

  5. 3. 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

  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. Synthesis and electrophilic substitution studies on thienyl, furyl and pyrrolyl 5-methyl 1,3,4,6- tetraaza[3.3.3]cyclazines

    Author : Gudrun Gudbjartsdóttir; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nitration and iodination; bromination; cyclazine;

    Abstract : .... READ MORE