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Shape-persistent fluorescent tetraphenylmethane dendrimers
(ROYAL SOC CHEMISTRY, 2016)
We report the first examples of a new class of rigid dendrimers made of three-dimensional tetraphenylmethane units connected by ethynylene linkers. Designed to obtain a persistent globular shape, minimal backfolding of ...
Síntese e avaliação farmacológica de 7-amino-espiro[cromeno[4,3-b]quinolina-6,1’-cicloalcanos] e derivados
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2017)
The present thesis describes the synthesis and pharmacological evaluation of new tacrine structural analogues, as well as N-derivation reactions and C-C and C-N coupling on these compounds. By this way, a series of ...
Ciclização eletrofílica intramolecular de (Z)-calcogenoeninos: síntese e reatividade de calcogenofenos e (Z)-calcogenetos vinilicos
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2019-02-22)
In the present thesis, efficient methods were developed to the synthesis of a series of heterocycles by electrophilic cyclization of (Z)-chalcogenoenynes 1, and chalcogenophenes 2, mediated by species of I2 and/or RSeBr. ...
Structural study of a novel acetylide-thiourea derivative and its evaluation as a detector of benzene
(Elsevier Science, 2017-07)
The new derivative 1-hexanoyl-3-(4-p-tolylethynyl-phenyl)-thiourea (APHX) was synthesised by the addition reaction between 4[4-aminophenyl] ethynyltoluene and hexanoyl isothiocyanate in acetone. The acetylide group was ...
Síntese de Calcogenofenos e Isoquinolinas via Reações de Ciclização Intramolecular
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2013-11-26)
In the first part of this work, a series of selenophenes and tellurophenes were prepared starting from of (Z)-chalcogenoenynes, by employing FeCl3 diorganyl dichalcogenide-mediated intramolecular cyclization. In general, ...
Síntese de 3-(organocalcogenil)-imidazotiazinas e funcionalização de inamidas via reações de ciclização, clorosselenação e tosilação promovidas por cloreto férrico e ácido p-toluilssulfônico
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2022-02-21)
In this thesis, four synthetic protocols were developed for the synthesis of four new classes of compounds, including the synthesis of 3-(organocalalcogenyl)-benzoimidazothiazines, 4-(organocalalcogenyl)-oxazolones, vinyl ...
Síntese de derivados de selenofenos e 4H-selenocromeno via reações de ciclização eletrofílica
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2019-07-26)
This work reports the synthesis of a series of selenium heterocyclics containing in it’s
core structure. These compounds are obtained through intramolecular electrophilic
cyclization reactions of alkynyl substrates and ...
Redox synthesis and high catalytic efficiency of transition-metal nanoparticle-graphene oxide nanocomposites
(Royal Society of Chemistry, 2017-10)
Although nanocatalysis is a promising area, increased efficiency and greenness are actively sought. Here we report the principle of the syntheses of graphene oxide (GO)-supported metal nanocatalysts (MNPs) for a variety ...
Síntese e atividade biológica de butenolídeos naturais e análogos
(Universidade Federal de Minas GeraisUFMG, 2019-06-07)
Butenolides, y-unsaturated lactones, are present in the structure of a large number of natural products such as nostoclides, rubrolides, fimbrolides and cadiolides. These compounds come mainly from marine metabolites and ...