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Synthesis 1986; 1986(3): 239-240
DOI: 10.1055/s-1986-31631
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Synthesis of 2,6-Diaryl-1(3)-oxo-3(1)-hydroxy-5(7)-imino-7(5)-amino-1H,5H (3H,7H)-pyrazolo[1,2-a]pyrazoles

Gury Zvilichovsky* , Mordechai David
  • *Department of Organic Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Publication Date:
20 August 2002 (online)

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Reaction of 4-aryl-3,5-dihydroxypyrazoles with α-arylmalononitriles led to a series of 2,6-diaryl derivatives of 1(3)-oxo-3(1)-hydroxy-5(7)-imino-7(5)-amino- 1H5H(3H,7H)-pyrazolo[1,2-a]pyrazole. Spectral results and tautomerism of these new products are also discussed.