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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, ...
Acilenaminonas: síntese e aplicação na obtenção de pirazóis, pirazolo[3,4-d]piridazinonas e pirazolo[1,5-a]pirimidinas
(Universidade Federal de Santa Maria, 2009-05-19)
The regioespecific synthesis of a series of 14 N-acylated enaminones (52-88%) from the acylation reaction of secondary β-enamino ketones [RC(O)CH=CHNR1R2; R = Ph, 4-
FC6H4, 4-NO2C6H4, thien-2-yl, CCl3, CF3; R1 = H; R2 = ...
5-Hidróxi-4,5-Diidro-1h-1-(2-hidroxibenzoil)pirazóis: planejamento, síntese e analgesia
(Universidade Federal de Santa Maria, 2007-02-23)
An efficient method to obtain six 4-alkoxy-2-oxo-but-3-enoic acid ethyl esters [EtO2CC(O)C(R2)=C(R1)OR, where R1/R2/R = Me/H/Me (2a), Ph/H/Me (2b), 4-MeC6H4/H/Me (2c), 4-BrC6H4/H/Me (2d), 4-FC6H4/H/Me (2e), H/Me/Et (2f)] ...
Líquidos iônicos: aplicação na síntese de β-dimetilaminovinil cetonas e na N-alquilação de pirazóis
(Universidade Federal de Santa Maria, 2007-02-15)
The synthesis of two 1-methyl-3-alkylimidazolium tetrafluoroborate (where alkyl = butyl, octyl; [BMIM]BF4 and [OMIM]BF4) based on room temperature ionic
liquids (RTIL) is reported. The usefulness of these ionic liquids ...
β-Enaminonas, 5-hidróxi-4,5-diidropirazóis e 5-Hidróxi-4,5-diidroisoxazóis halometilsubstituídos: estudo molecular por difração de raios-x
(Universidade Federal de Santa Maria, 2008-08-08)
The molecular study by X-ray diffraction of β-aminovinyl ketones
[R3C(O)CH=C(R1)N(R4R5), onde R3 = CF3, CCl3, CHCl2; R1 = H, Me; R4 = H; R5 =
benzyl, Ph, 5-methylisoxazol-3-yl; R4, R5 = -(CH2)4-, -(CH2)2O(CH2)2-], methyl ...