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Reações de 1,1,1-tricloro-4-metoxi-3-penten-2-ona com hidrazinas monosubstituídas
(Universidade Federal de Santa Maria, 2005-02-18)
The 1,1,1-trichloro-4-methoxy-3-penten-2-ona (CCl3COCH=CHOMe) reaction with hydrazines series (RNHNH2, where R = H, Me, tert-Bu, Ph, Ph(F)5, Ph-4-NO2, CO2Me e CONH2) yield to the pyrazoles N-substituted and derivatives ...
Reações de ciclocondensação de cianoacetoidrazida com enonas halometil-substituídas
(Universidade Federal de Santa Maria, 2008-02-22)
The synthesis of thirteen 3-(R1), 4-(R2) and 5-(R3)-substituted 1-cyanoacetyl-5-hydroxy-4,5-dihydro-1H-pyrazoles from the cyclocondensation reaction of 4-alkoxy-3-alken-2-ones [R3C(O)C(R2)=C(R1)(OR), where R3 = CF3,
CCl3, ...
Síntese de 5-hidróxi-3-(1,1-dimetoxietan-2-il)-5-trifluormetil-2-pirazolinas e 3-(1,1-difluoretan-2-il)-1H-pirazóis análogos
(Universidade Federal de Santa Maria, 2008-02-01)
This work describes, at first, the synthesis of 4,6,6-trimethoxy-1,1,1-trifluorohex-3-en-2-one by the acylation reaction of 1,1,3,3-tetramethoxybutane, in 65% yields.
Afterwards, the synthesis of a new series of ...
Síntese de 4-(1-fenil-5-trifluormetil-1h-pirazol-4-il)-1h-1,2,3-triazóis promovida por dialquil biaril fosfinas e catálise metálica
(Universidade Federal de Santa Maria, 2017-08-11)
The present dissertation describes the development of a three-step, one-pot methodology, involving the sequential reactions of Sonogashira cross-coupling, deprotection of terminal alkyne (removal of trimethylsilane group), ...
Efeitos energéticos e topológicos no design de cocristais de compostos aromáticos e em 1,5-diaril-1h-pirazol-3-carboxilatos de etila
(Universidade Federal de Santa Maria, 2017-07-20)
This work presents the study of the supramolecular environment in multicomponent crystals. Multicomponent
crystals were defined by J. D. Dunitz as a crystal containing two or more components together, so that this
concept ...
Nh-pirazóis e isoxazóis: síntese mecanicamente ativada por grinding
(Universidade Federal de Santa Maria, 2010-07-30)
The synthesis of twelve NH-pyrazoles from the cyclocondensation reaction of β-dimethylaminovinylketones ([R1C(O)C(R2)=CHN(Me)2], where R1 = Me, C6H5, 3-
MeO-C6H4, 4-Me-C6H4, 4-MeO-C6H4, 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, ...
Síntese de 1,1-dimetiletil-1h-pirazóis em líquidos iônicos
(Universidade Federal de Santa Maria, 2010-07-08)
This work describes the synthesis of a series of pyrazoles from enaminoketones (RC(O)CH=CHNMe2 where R = hexyl, dimethoxymethyl, Ph, 4-Me-C6H4 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, 4-O2N-C6H4, thien-2-yl, fur-2-yl, pyrrol-2-yl ...
Síntese de 1,1,1-trifluoro-4-metoxi-3-alquen-2-onas funcionalizadas e 1,2-azóis derivados
(Universidade Federal de Santa Maria, 2014-03-03)
This work describes the application of the method of trifluoroacetic anhydride acetal
acylation to four new functionalized ketones: 6-methyl-5-hepten-2-one, 4-phenyl-4-
oxobutanoic acid (3-benzoylpropionic acid), ...
Síntese de novos azóis derivados da 1,1- difenilacetona
(Universidade Federal de Santa Maria, 2014-08-07)
This work describes an efficient method to obtaining new heterocycles from the reaction of acetalization of the ketonic carbonyl, followed by acylation of the enolether, generated in situ from the acetal derivative of ...
Condensação de knoevenagel na síntese de novos sistemas heteroaroil-cumarínicos trifluormetil substituídos
(Universidade Federal de Santa Maria, 2014-03-19)
With the aim to verify the influence of the presence of the trifluoromethyl group and the heterocyclic precursor in the heteroaroyl-coumarin synthesis, this dissertation describes firstly a methodology optimization to ...