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N-Substituted derivatives of phenyldimethylpyrazolone carbamide

J. Tamchyna and J. Bulík

Slovak Technical University, Bratislava

 

Abstract: By condensation of N-substituted ureas with 1-phenyl-2,3-dimethyl-4-amino-5-pyrazolone (I) at 135°, the following 4-substituted-amino analogs of I were prepd. (substituent and m.p. given): MeNHCO, 205°; EtNHCO, 240°; BuNHCO, 238°; PhNHCO, 235°; H2NCO, 245°.

Full paper in Portable Document Format: 124a209.pdf (in Slovak)

 

Chemical Papers 12 (4) 209–212 (1958)

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