Chem. J. Chinese Universities ›› 1998, Vol. 19 ›› Issue (S1): 184.
• Organic Synthesis Chemistry • Previous Articles Next Articles
CHEN Hansong, LI Zhengming
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Abstract: The reaction of alkyl hydrazine with ethoxymethylenemalononitrile (EMM) is a routine reaction, the corresponding product, pyrazole ring, will be obtained usually, For example, p-chlorophenylhydrazine with EMM[1].However, 5-pyrazole hydrazide[2] is different. When they reacted with EMM on condition that either reflux or room temperature, l,2-bis(5-pyrazolylcarbonyl)hydrazine (3),the abnormal products, instead of 5-amino-4-cyano-1-pyrazolylcarbonyl-1H-pyrazole(4) were formed (see Scheme 1).
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CHEN Hansong, LI Zhengming. A Preliminary Study of the Reaction of 5-Pyrazole Hydrazide and Malononitrile Derivatives[J]. Chem. J. Chinese Universities, 1998, 19(S1): 184.
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