Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"multicomponent reaction"”.
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Gold-catalyzed synthesis and functionalization of heteroarenes
… of gold-catalyzed synthesis or functionalization reactions or heteroarenes. The work is presented in four different chapters. The first chapter summarizes the most representative reactivity trends in the field of gold catalysis and serves as general introduction. The second chapter is focused on …
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Metal catalyzed generation of reactive benzomethane intermediates for the synthesis of benzopyrans, tetrahydroquinolines and chiral aryl methanes
… alcohols or o-aminobenzyl alcohols under mild reaction conditions. These in situ generated intermediates can be trapped by olefins in a [4+2] cycloaddition reaction. Furthermore, isolation of unsymmetrical di- and triaryl methanes from a reaction with o-hydroxybenzyl alcohols and methyl eugenol …
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Understanding the singlet oxygen reactivity of salarin C through synthesis of a simplified macrocyclic analogue; multicomponent, enantioselective organocatalytic synthesis of tetrahydropyridazinones.
… cause of the aerobic rearrangement. Secondly, a multicomponent reaction was developed towards the synthesis of tetrahydropyridazinones. Multicomponent reactions are extremely advantageous methodologies as they allow the formation of complex scaffolds from simple starting materials and have shown …
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A novel photocatalytic strategy for complex aliphatic amine synthesis and the total synthesis of alkaloids (−) FR901483 and (+)-TAN1251C
… complex aliphatic amines is described. The novel multicomponent reaction between secondary amines, aldehydes and electron-deficient olefins efficiently furnishes complex aliphatic tertiary amine products. Selective generation of an $\alpha$-amino radical species is achieved via photocatalytic …
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Multicomponent Diels-Alder Sequences of 1-Aminodendralenes
… in situ generated acyclic 1-aminodendralenes in multicomponent diene-transmissive Diels-Alder (DTDA) reaction sequences. Dendralenes have previously been shown to generate polycyclic frameworks in a step-economic manner. The 1-amino substituent is shown to promote very high levels of site …
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Multicomponent Diels-Alder Sequences of 1-Aminodendralenes
… in situ generated acyclic 1-aminodendralenes in multicomponent diene-transmissive Diels-Alder (DTDA) reaction sequences. Dendralenes have previously been shown to generate polycyclic frameworks in a step-economic manner. The 1-amino substituent is shown to promote very high levels of site …
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Azomethine-Containing Moieties for Simple and Degradable Conjugated Polymers
… synthesis was simplified through the one-step multicomponent reaction to make dihydro[3,2-b]pyrrolopyrrole (DHPPs), as well as solvent-free mechanochemistry to synthesize dibrominated monomers amenable to robust Suzuki polycondensations. Monomer preparation through mechanochemistry has the …
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OPENING NEW CHEMICAL SPACE IN DRUG DISCOVERY
… synthetic approaches, the high potential of the multicomponent reactions with unprecedented components has been exploited and, on the other hand, new protocols have been finely tuned to achieve new transformations. The synthesis of promising bioactive compounds and the creation of chemical …
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Síntesis de sistemas heterocíclicos nitrogenados en secuencias Ugi/ciclación a partir de glioxales y ácidos haloacéticos
La combinación de arilglioxales y ácidos haloacéticos como reactivos de partida en la reacción de Ugi ha demostrado ser una poderosa herramienta en la construcción de sistemas heterocíclicos nitrogenados. Por un lado, al utilizar el ácido cloroacético combinado con aminas con H-α ácidos como …