Search for dissertations about: "cyclopropane"

Showing result 1 - 5 of 9 swedish dissertations containing the word cyclopropane.

  2. 1. Dissociation dynamics of highly excited molecules: Theory and Experiment

    Author : Shabnam Oghbaie; Synkrotronljusfysik; []
    Keywords : Molecular dissociation; core-electron excitation; double ionization; femtoseconds molecular dynamics; Isomerization; symmetry breaking; momentum imaging; site-selective dissociation; butadiene; cyclopropane; nuclear dynamics; Auger decay;

    Abstract : This thesis presents studies on dissociation of two model molecules: Butadiene and Cyclopropane. Tunable synchrotron radiation was used to ionize or excite the molecules in the gas phase, and the momentum correlation of the resulting fragment ions were measured using a 3D momenta coincident ion spectroscopy. READ MORE

  4. 2. Cyclopropane as refrigerant in small refrigeration systems

    Author : Jörgen Rogstam; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  5. 3. Asymmetric Synthesis using Redox-Active Diazocompounds as Chiral Carbon Atom Precursors

    Author : Matteo Costantini; Abraham Mendoza; Armido Studer; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; redox-active carbenes; mechanistic investigation; cyclopropanes; asymmetric catalysis; photochemistry; organisk kemi; Organic Chemistry;

    Abstract : This thesis summarizes the development of general and efficient methods to synthesize enantiomerically enriched cyclopropane compounds. The works reported herein exploit the opportunity presented by redox-active esters to explore the orthogonality between asymmetric carbene-transfer and geminal radical generation. READ MORE

  6. 4. Quantum Chemical Cluster Modeling of Enzymatic Reactions

    Author : Rongzhen Liao; Fahmi Himo; Robert Deeth; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; cluster approach; density functional theory; B3LYP; enzyme; mechanism; dinuclear; trinuclear; zinc; tungsten; hydrolysis; decarboxylation; formaldehyde oxidation; hydration; methyl transfer; Quantum chemistry; Kvantkemi; organisk kemi; Organic Chemistry;

    Abstract : The Quantum chemical cluster approach has been shown to be quite powerful and efficient in the modeling of enzyme active sites and reaction mechanisms. In this thesis, the reaction mechanisms of several enzymes have been investigated using the hybrid density functional B3LYP. READ MORE

  7. 5. Palladium-Catalyzed Synthesis and Transformation of Organoboranes

    Author : Sara Sebelius; Kálmán J. Szabó; Todd Marder; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; allylborane palladium; Organic chemistry; Organisk kemi; SRA - Molecular Bioscience; SRA - Molekylär biovetenskap;

    Abstract : This thesis presents the development of new palladium-catalyzed transformations involving synthesis and application of allylborane reagents. In these reactions various palladium sources, including pincer complexes and commonly used catalysts were applied. READ MORE