Search for dissertations about: "microwave organic synthesis"

Showing result 1 - 5 of 40 swedish dissertations containing the words microwave organic synthesis.

  2. 1. New Methodologies in Organic Chemistry: Applications to the Synthesis of α-Amino Acids and Natural Products

    Author : Sebastian Hirner; Peter Somfai; Varinder Aggarwal; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic synthesis; 2-Vinylaziridines; 3-Pyrrolines; Ringexpansion; Rearrangement; Anisomycin; Total synthesis; α-Amino acids; Arylglycines; Weinreb amides; α-Arylation; Grignard reagents; Umpolung; Organic chemistry; Organisk kemi;

    Abstract : This thesis deals with the development and application of new synthetic methodology in organic chemistry. The first part describes the development of a new protocol for the synthesis of 3-pyrrolines by means of a microwave-assisted ring-expansion reaction of 2-vinylaziridines. READ MORE

  4. 2. Synthesis and biological evaluation of Bicyclic β-Lactams and 2-Pyridinones : Pilicides Targeting Pilus Biogenesis in Pathogenic Bacteria

    Author : Hans Emtenäs; Ulf Nilsson; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; β-lactam; 2-pyridinone; 2-pyridone; Meldrum’s acid; Δ2-thiazoline; solid-phase synthesis; microwave assisted synthesis; antibacterial; pili; pilicide; Organisk kemi; Organic chemistry; Organisk kemi; organisk kemi; Organic Chemistry;

    Abstract : New methods have been developed for the synthesis of bicyclic β-lactams and 2-pyridinones by combining acyl Meldrum’s acids and Δ2-thiazolines. The 2-pyridinones were synthesised both in solution using conventional heating or microwave assisted heating as well as by solid supported chemistry. READ MORE

  5. 3. Palladium(II)-Catalyzed Addition Reactions : Synthesis of Aryl Amidines and Aryl Ketones

    Author : Jonas Rydfjord; Mats Larhed; Adriaan Minnaard; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Palladium; Catalysis; Palladium II catalysis; Synthesis; Addition Reactions; Cyanamide; Amidine; Aryl Amidine; Nitrile; Ketone; Aryl Ketone; Carbopalladation; Continuous-flow; Continuous flow; Microwave heating; Farmaceutisk vetenskap; Pharmaceutical Science;

    Abstract : Palladium-catalyzed reactions have become one of the most important tools in modern organic chemistry due to its ability to catalyze the formation of new carbon-carbon bonds.The aim of the work presented in this thesis was to develop new palladium(II)-catalyzed addition reactions. READ MORE

  6. 4. On the Versatility of Microwave-Assisted Chemistry : Exemplified by Applications in Medicinal Chemistry, Heterocyclic Chemistry and Biochemistry

    Author : Kristina M. Orrling; Mats Larhed; Fredrik Almqvist; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microwave-assisted chemistry; malaria; aspartic protease; plasmepsin; PfPM4; PmPM4; PoPM4; PvPM4; inhibitor; unsaturated lactone; unsaturated lactam; unsaturated amide; lactam; Bestmann s ylide; ionic liquid; polymerase chain reaction; thermophilic enzyme; Pharmaceutical chemistry; Läkemedelskemi; Organic synthesis; Organisk syntes; Biochemistry; Biokemi; Biochemistry; biokemi;

    Abstract : Today, the demand for speed in drug discovery is constantly increasing, particularly in the iterative processes of hit validation and expansion and lead optimization. Irradiation with microwaves (MWs) has been applied in the area of organic synthesis to accelerate chemical reactions and to facilitate the generation of new chemical entities since 1986. READ MORE

  7. 5. Imaging of Enzymes in the Steroid Biosynthetic Pathway : Synthesis of 18F-Labelled Tracers

    Author : Maria Erlandsson; Bengt Långström; Franklin Aigbirhio; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi; Organisk kemi; Organic Chemistry;

    Abstract : This thesis deals with the synthesis and development of 18F-labelled alkyl etomidate and vorozole analogues, and their use as positron emission tomography (PET) tracers for the imaging of the steroid enzymes 11β-hydroxylase and aromatase. Two synthetic 18F-labelling approaches to the etomidate and vorozole analogues were developed, and the analogues were evaluated in some biological assays. READ MORE