Sökning: "microwave-assisted processes"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden microwave-assisted processes.

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

    Författare :Kristina M. Orrling; Mats Larhed; Fredrik Almqvist; Uppsala universitet; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 2. Microwave-assisted transformations of lignin for value-added material applications

    Författare :Jenevieve G. Yao; Minna Hakkarainen; Karin Odelius; Monika Österberg; KTH; []
    Nyckelord :lignin; microwave-assisted processes; organosolv fractionation; esterification; fused filament fabrication; digital light processing; lignin; mikrovågsassisterade strategier; organosolv-fraktionering; förestring; additiv tillverkning; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : The chemical diversity and structural complexity of lignin, an abundant biopolymer found in vascular plants, present a multitude of opportunities for the modification and fine-tuning of its properties to suit downstream demands. In this thesis, microwave-assisted strategies were explored as efficient and environment-friendly pathways for lignin valorization towards value-added material applications. LÄS MER

  4. 3. Palladium(II)-Catalysed Heck and Addition Reactions : Exploring Decarboxylative and Desulfitative Processes

    Författare :Bobo Skillinghaug; Mats Larhed; Antonio de la Hoz Ayuso; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Palladium; catalysis; palladium II catalysis; synthesis; Heck; carboxylic acid; sulfinic acid; sodium sulfinate; nitrile; styrene; ketone; aryl ketone; electrospray ionization mass spectrometry; density functional theory; microwave heating; continuous flow; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Sammanfattning : Palladium complexes have the ability to catalyse cross-coupling of two organic moieties through the formation of transient metal-carbon bonds, thus bringing them closer to each other to facilitate the formation of a new bond. Palladium-catalysed coupling reactions are one of the most important carbon-carbon forming reactions available to organic chemists and many of these reactions rely on the reactivity of aryl-palladium complexes. LÄS MER

  5. 4. Applications of Microwave Heating of Foods

    Författare :Birgitta Raaholt; RISE; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modelling of microwave heating; microwave-assisted HTST processing; product quality.; heat transfer; microwave heating; microwave oven; heating uniformity; microwave cavity; tubular microwave in-flow processing;

    Sammanfattning : AbstractMicrowave heating of foods offers rapid and flexible heating both for consumer and industrial applications, with several advantages, such as reduced processing time (due to volumetric heating and reduced coming-up times (heating time required to reach the desired target temperature), selective heating, increased process flexibility and efficient heating (volumetric heating of the food does not require heating of a surrounding medium or package). However, successful installations requireknowledge in process design. LÄS MER

  7. 5. Palladium-Catalysed Carbon–Carbon Coupling Reactions : Focusing on Microwave Heating, Low Catalyst Concentrations, Aqueous Conditions, Regioselectivity and Medicinal Chemistry Applications

    Författare :Riina K Arvela; Mats Larhed; Anders Hallberg; Michael G Organ; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Suzuki coupling; Heck reaction; palladium; microwave heating; water; vinyl ethregioselective; HIV-1 integrase inhibitor; Pharmaceutical chemistry; Farmaceutisk kemi; farmaceutisk biokemi; Pharmaceutical Biochemistry;

    Sammanfattning : It is widely accepted that palladium is one of the most useful catalysts in organic chemistry, and many palladium(0)-catalysed carbon–carbon bond-forming reactions have been developed over the years. In addition, the ever-growing need for more environmentally benign processes in the chemical industry has driven scientists to look for greener options while developing new methodologies for organic synthesis. LÄS MER