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Enantioselective synthesis of spirooxindoles
Vopálenská, Andrea ; Veselý, Jan (advisor) ; Rýček, Lukáš (referee)
This diploma thesis is focused on the enantioselective synthesis of spiro[cyclopentane- oxindoles] from 3-alkylideneoxindoles and 1-bromo-3-nitropropane catalyzed by chiral bifunctional organocatalysts. The first part of this work is devoted to the preparation of the proposed starting 3-alkylideneoxindoles and 1-bromo-3-nitropropane. In the second part, the reaction conditions of the enantioselective synthesis of chiral spirooxindoles were optimized, and then the scope of the method's use on selected substrates was studied under the optimized conditions.
The use of alkylideneheterocycles for the synthesis of spirocyclic compounds
Vopálenská, Andrea ; Veselý, Jan (advisor) ; Matoušová, Eliška (referee)
This bachelor thesis is focused on the stereoselective Michael-alkylation reaction of alkylidene heterocycles using bifunctional organocatalysis. Within the thesis, suitable starting materials were first prepared and then the organocatalytic reaction leading to the formation of spirocyclic compounds was optimized. Under optimized conditions, a study of the scope of application of the method on selected derivatives was also performed and the optical purity of the products was determined. Key words Organocatalysis, asymmetric synthesis, cascade reaction, Michael reaction, bifunctional organocatalysts, spirocyclic compounds

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3 VOPÁLENSKÁ, Aneta
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