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2005
Pyrazole derivatives
R 0180
Studies on Reactions of Cyclic Oxalyl Compounds with Hydrazines or HydraPart 2. Synthesis and Reactions of 4-Benzoyl-1-(4-nitrophenyl)19- 132 zones.
-5-phenyl-1H-pyrazole-3-carboxylic Acid. — The synthesis of the title pyrazolecarboxylic acid (III) by reaction of furandione (I) with benzaldehyde hydrazone (II) and
its conversion into corresponding ester (VI), amides [cf. (VIII), (IX)], nitrile (X) and
some pyrazolopyridazine derivatives [cf. (XI), (XIII)] are described. — (SENER, A.;
KASIMOGULLARI, R.; SENER, M. K.; GENC, H.; Chem. Heterocycl. Compd.
(N. Y.) 40 (2004) 8, 1039-1046; Dep. Chem., Fac. Arts Sci., Yuezuencue Yil Univ.,
TR-65080 Van, Turk.; Eng.) — H. Toeppel
2005
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