142055-59-2Relevant academic research and scientific papers
Synthesis of pyrazolo[4,3-c]quinoline-5-oxide by reductive cyclization of 4-acetyl-5-(2-nitrophenyl)pyrazole: Revision of the reported structures
Kalayanov, Genadiy D.,Choi, Joong-Kwon
, p. 1221 - 1227 (2007/10/03)
Cyclocondensation of 3-(2-nitrobenzoyl)pentane-2,4-dione with phenylhydrazine provided 4-(2-nitrobenzoyl)-3,5-dimethyl-1-phenylpyrazole (5) instead of 4-acetyl-3-methyl-5-(2-nitrophenyl)-1-phenylpyrazole (2). Catalytic hydrogenation of 2 resulted in the s
A Comparative Study on the Synthesis of Pyrazoloquinoline Oxides by Reductive Cyclisations
Sicker, Dieter
, p. 275 - 276 (2007/10/02)
Alternate routes for the reductive cyclisation of 4-acetyl-3-methyl-5-(2-nitrophenyl)-1-phenylpyrazole under different conditions are described.Whereas 3,4-dimethyl-1-phenylpyrazoloquinoline 5-oxide is formed by mild noncatalytic reductions, cataly
