Sökning: "4-addition"
Visar resultat 1 - 5 av 9 avhandlingar innehållade ordet 4-addition.
1. Iodotrimethylsilane-Promoted Conjugate Addition of Organocopper Reagents, DDQ oxidation of Arylpropenes and Synthesis of 2-Arylcoumarans
Sammanfattning : This thesis is divided into three parts: conjugate additions of organocopper reagents, DDQ oxidations of arylpropenes, and synthesis and steric assignment of 2-arylcoumarans. The iodotrimethylsilane(TMSI)-promoted conjugate addition of alkylcopper and copper acetylides to certain a,b-unsaturated carbonyl compounds is investigated. LÄS MER
2. Iodotrimethylsilane-promoted conjugate addition of monoorganocopper reagents to α,β-unsaturated carbonyl compounds
Sammanfattning : .... LÄS MER
3. Organocopper compounds and iodotrimethylsilane in stereoselective conjugate additions
Sammanfattning : .... LÄS MER
4. Syntheses of functionalized Phe-Gly dipeptidomimetics
Sammanfattning : The complete series of Boc-protected C-4 mono- and difluoroallyl Phe-Gly dipeptidomimetics and their corresponding saturated derivatives has been synthesized. A mechanism that rationalizes the formation of the two isomeric allylic mono-fluorides from an allylic alcohol with diethylaminosulfur trifluoride (DAST) has been investigated. LÄS MER
5. Mechanisms and time course of cell death in embryonic nigral tissue and intrastriatal transplants
Sammanfattning : Parkinson’s disease (PD) is the second most common neurodegenerative disorder and severely affects about one in a hundred persons over the age of fifty years. In PD, there is a reduced striatal concentration of the neurotransmittor dopamine, mainly caused by a degeneration of the dopaminergic neurons in the substantia nigra. LÄS MER