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Itens para a visualização no momento 1-9 of 9
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 ...
Bi-heterociclos a partir do Ácido Levulínico: Síntese de 5-[(5-(trifluormetil)-5-hidroxi-(3-substituido)-4,5-diidro-1H-pirazol-1-il)-1-propan-1-ona-3-il]-2-metil-7-trifluormetil)pirazolo[1,5-a]pirimidinas
(Universidade Federal de Santa Maria, 2013-03-04)
An efficient method to obtain 2-methyl-5-(methylpropanoate-3-yl)-7-trifluoromethylpyrazolo[1,5-a]pyrimidine 2 from the reaction of compound methyl 7,7,7-trifluoro-4-methoxy-6-oxo-heptenoate with 3-amino-5-methyl-1H-pyrazol. ...
Síntese de (5-trifluormetil-1H-pirazol-1-IL)(quinolin-4-IL)metanonas de interesse farmacológico
(Universidade Federal de Santa Maria, 2016-07-22)
A convergent synthesis of a series of 16 new polysubstituted (5-hydroxy-5-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-1-yl)(quinolin-4-yl)methanones, starting from isatin and alky(aryl/heteroaryl) ketones, is described. The ...
Novos Espirocromenil-Trifluoretanonas a partir de Reações de Trifluoracetilação de Adutos de Kabbe e seus Espiro[diidrocromeno-cicloalcan]pirazóis e Isoxazóis Derivados
(Universidade Federal de Santa Maria, 2013-12-03)
This work describes firstly an efficient and regioselective method for the synthesis of a new series of 2,2,2-trifluoro-1-[4-methoxy-spiro(2H-chromen-2,1 -cycloalkan)-3-yl]ethanones from the Kabbe adducts (spiro[chroman-2,1 ...
Síntese de [2]rotaxanos: relação entre a estrutura de pirazóis ligados ao filamento linear e a formação da molécula entrelaçada
(Universidade Federal de Santa Maria, 2015-02-25)
This work reports the synthesis of new [2]rotaxanes, [2]-[1,2-bis(aminocarbonyl-
(1'-(1',1'-dimethylethyl)-1H-pyrazol-3'-yl))-ethane]-rotaxa-1,7,14,20-tetraaza-
2,6,15,19-tetraoxo-3,5,912,16,18,22,25-tetrabenzocicloexacosano], ...
Síntese de Pirimidinas derivadas de 7,7,7-trialo-4-metoxi-6-oxo-4- heptenoatos de metila e bi-heterociclos trifluormetilados
(Universidade Federal de Santa Maria, 2012-02-27)
An efficient method to obtain pyrimidinones and pyrimidines trialomethylated from the cyclocondensation reaction of compounds of methyl 7,7,7-trihalo-4-methoxy-6-oxoheptenoate
with urea and differents amidines providing ...