4‐Phenyl‐2,3‐dioxobutyro‐1,4‐lactone (1) gave with phenylhydrazine and ils p‐Cl, p‐Br, p‐I and p‐NO2 derivatives, bishydrazones which were eyclized to 1‐aryl‐3‐(α‐hydroxybenzyl)‐4,5‐dione‐4‐arylhydrazones. With o‐phenylene diamine, compound 1 gave either a Schiff base or a substituted quinoxaline, depending upon the ratio of the reactants
In this work pyrazolin derivatives were prepared from the diazonium chloride salt of 4-aminobenzoic...
It was thought interesting to synthesize pyrazole derivatives. The titled compounds were prepared by...
<p>Synthesis of <i>N</i>-phenylpyrazolyl-<i>N</i>-glycinyl-hydrazone derivatives 4a–h.</p
We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...
We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...
Abstract: 3-arylhydrazono-2,4-dioxo-4-phenylbutanoates has been prepared by the coupling of benzoyl ...
Condensation of ethyl 2,4‐dioxo‐6‐phenylhex‐5‐enoates (I; R = H, I; R = Me, I, R = Ph) with various ...
Phenylhydrazines on condensation with quinones give rise to products which behave both as azophenols...
AbstractThe reaction of arylmalononitiles 1a,b with hydrazine hydrate at room temperature has afford...
Treatment of 2,3-diaryloxirane-2,3-dicarbonitriles 1a–c with different nitrogen nucleophiles, e.g., ...
International audience2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]py...
The present work reports the synthesis of 2-ary1—3—oxo-3—pyrazolino[3,4-b]quinoxalines for the firs...
2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]pyrazine were halogenate...
Aryl-and benzoyl-hydrazones of 2,4-O benzylidene D-erythrose were prepared and acetylated. D-glycero...
947-951Quinoxaline 3A with ethyl bromoglyoxylate arylhydrazone 4 in the presence of triethylamine, ...
In this work pyrazolin derivatives were prepared from the diazonium chloride salt of 4-aminobenzoic...
It was thought interesting to synthesize pyrazole derivatives. The titled compounds were prepared by...
<p>Synthesis of <i>N</i>-phenylpyrazolyl-<i>N</i>-glycinyl-hydrazone derivatives 4a–h.</p
We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...
We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...
Abstract: 3-arylhydrazono-2,4-dioxo-4-phenylbutanoates has been prepared by the coupling of benzoyl ...
Condensation of ethyl 2,4‐dioxo‐6‐phenylhex‐5‐enoates (I; R = H, I; R = Me, I, R = Ph) with various ...
Phenylhydrazines on condensation with quinones give rise to products which behave both as azophenols...
AbstractThe reaction of arylmalononitiles 1a,b with hydrazine hydrate at room temperature has afford...
Treatment of 2,3-diaryloxirane-2,3-dicarbonitriles 1a–c with different nitrogen nucleophiles, e.g., ...
International audience2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]py...
The present work reports the synthesis of 2-ary1—3—oxo-3—pyrazolino[3,4-b]quinoxalines for the firs...
2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]pyrazine were halogenate...
Aryl-and benzoyl-hydrazones of 2,4-O benzylidene D-erythrose were prepared and acetylated. D-glycero...
947-951Quinoxaline 3A with ethyl bromoglyoxylate arylhydrazone 4 in the presence of triethylamine, ...
In this work pyrazolin derivatives were prepared from the diazonium chloride salt of 4-aminobenzoic...
It was thought interesting to synthesize pyrazole derivatives. The titled compounds were prepared by...
<p>Synthesis of <i>N</i>-phenylpyrazolyl-<i>N</i>-glycinyl-hydrazone derivatives 4a–h.</p
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