54293-71-9Relevant academic research and scientific papers
Synthesis and transformations of ethyl (2E)-3-N,N-dimethylamino-2-(5-ethoxy-1-phenyl-1H-pyrazol-3-YL) propenoate
Bevk, David,Golic, Ljubo,Golobic, Amalija,Svete, Jurij,Stanovnik, Branko
, p. 207 - 218 (2007/10/03)
The reaction of amines (4a-g) with ethyl (2E)-3-N,N-dimethylamino- 2-(5-ethoxy-1-phenyl-1H-pyrazol-3-yl)propenoate (3), prepared in two steps from ethyl (4,5-dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)acetate (1), gave ethyl (2E)-2-(5-ethoxy-1-phenyl-1H-pyraz
Transformations of phenylhydrazones of dialkyl 2-oxo-propane-1,3- dicarboxylate and of ethyl acetoacetate in concentrated sulfuric acid
Bevk, David,Svete, Jurij,Stanovnik, Branko
, p. 1413 - 1415 (2007/10/03)
The hydrazones 3a,b, prepared from phenylhydrazine (1) and dialkyl 2-oxopropane-1,3-dicarboxylate (2a,b) were converted in concentrated sulfuric acid at -5 °C into a mixture of alkyl (3-carboxyindol-2-yl)acetates (5a,b), and ethyl (5-ethoxy-1-phenyl-1H-pyrazol-3-yl)acetate 6. The hydrazone 8, prepared from 1 and ethyl acetoacetate (7) was transformed under the same conditions into a mixture of five compounds: ethyl 2-methylindol-3-carboxylate (9), 2-methylindol-3-carboxylic acid (10), 2-methylindol (11), 5-ethoxy-3-methyl-1-phenyl-1H-pyrazole (12), and 3-methyl-1-phenyl-1H-pyrazol-5- one (13).
