National Repository of Grey Literature 33 records found  beginprevious31 - 33  jump to record: Search took 0.01 seconds. 
Optimalization of preparation of bifunctional organocatalysts derived from alkaloids
Formánek, Bedřich ; Veselý, Jan (advisor) ; Drahoňovský, Dušan (referee)
This bachelor thesis deals with the preparation of C−9 Cinchona alkaloid derivatives, which are used in wide variety of asymmetric transformations. First goal is comparison of synthetic aproaches and their effectiveness. In particular of C−9 amino derivatives. This part also examines possible optimization of synthesis individual steps. Second goal of bachelor thesis focuses on preparation bifunctional catalysts based on Cinchona alkaloids.
Organocatalytic asymmetric synthesis of various organic compounds from α,β-unsaturated aledyhes
Kamlar, Martin ; Trnka, Tomáš (referee) ; Veselý, Jan (advisor)
With regard to a fast development in the field of fluoroorganic chemisty, the intention of this diploma thesis is focused to utilize of organocatalysis by secondary amines as catalysts for preparation enantiomerically pure compounds containing fluorine atom in its structure. The preparation of these subsances is realized by way of nucleofilic addition to α,β- unsaturated aldehydes using suitable fluorine containing nuclephilic agent 1-(fluoronitromethylsulphonyl)benzene, to get appropriate 1,4-adduct.
Recent Progress in Asymmetric Synthesis
Starý, Ivo
The most remarkable progress has been recorded recently in homogeneous enantioselective catalysis by chiral transition metal complexes, enzymes, and nonmetal organic catalysts.

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