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Síntese de compostos heterocíclicos nitrogenados via reações de ciclização promovidas por espécies eletrofílicas de organocalcogênios: síntese de derivados de azaespiros e pirroloquinolinas
(Universidade Federal de Santa Maria, 2021-07-28)
In the present work, a synthetic route was developed for the preparation of 3- (organochalcogenyl)-azaespiro. The methodology developed involves an ipso cyclization reaction of arylpropynyl amides 1 in the presence of ...
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 Maria, 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 ...
Reações entre (e)-5-bromo-1,1,1-trialo-4-metoxipent-3-en-2-onas e aminoácidos para produção de heterociclos de 5, 6 e 7 membros
(Universidade Federal de Santa Maria, 2022-05-13)
This work present the versatility of 4-alkoxy-5-bromo-1,1,1-trialopent-3-en-2-ones in reactions with amino acids, exploring the four reactive centers of this building block and leading to the formation of heterocycles of ...
Regioquímica da reação de alquilação entre 4- (trialometil)pirimidin-2(1h)-onas e 5-bromoenonas
(Universidade Federal de Santa Maria, 2022-09-23)
The present thesis reports the reactivity study between 5-bromo-1,1,1,-trifluoro-4-
methoxy(amino)pent-3-en-2-ones (5-bromoenones/enaminones) towards 5- or 6-
substituted 4-(trihalomethyl)pyrimidin-2(1H)-ones. During the ...
Síntese de 1-alquil-4-aminoalquil-2-trifluormetil-1H-pirróis e 1,2,3- triazóis derivados
(Universidade Federal de Santa Maria, 2020-12-04)
In the present work, it was carried out a study of the reactivity of 5-bromo-1,1,1-trifluoro-
4-methoxypent-3-en-2-one (5-bromo enone) towards primary aliphatic amines, which furnishes
as products two novel series of ...
Síntese de derivados de benzo[b]furano promovida por t-BuOK
(Universidade Federal de Santa Maria, 2023-01-20)
In this work, we report the study developed for the preparation of benzo[b]furan
derivatives via intramolecular double cyclization reaction promoted by tert-BuOK. First, 3-
((butylselanyl)methyl)-2-(phenylethynyl)benzofuran ...