Sökning: "radical cyclisation"

Hittade 2 avhandlingar innehållade orden radical cyclisation.

1. 1. Synthesis of Tetrahydrofuran and Pyrrolidine Derivatives Utilising Radical Reactions : Organochalcogenides in Reductive, Carbonylative and Group-Transfer Cyclisation

   Författare :Cecilia Ericsson; Lars Engman; Ilhyong Ryu; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis describes free-radical reactions for the construction of tetrahydrofuran and pyrrolidine derivatives. The studies are concerned with (i) diastereoselectivity in radical cyclisation, (ii) construction of tetrahydrofuran-3-ones and pyrrolidin-3-ones via radical carbonylation/cyclisation and (iii) synthesis of tetrahydrofuran derivatives via group-transfer cyclisation of organochalcogen compounds. LÄS MER

3. 2. Design, Synthesis and Evaluation of Catalytic Chalcogenide Antioxidants

   Författare :David Shanks; Lars Engman; John C Walton; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; antioxidant; tellurium; selenium; computational design; homolytic substitution; radical cyclisation; microwave-assisted synthesis; antioxidant regeneration; Organisk kemi; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis describes the design, synthesis and evaluation of novel chalcogenide antioxidants.A computational model for the prediction of antioxidant properties of chalcogen-containing antioxidants has been developed. LÄS MER