Abstract
With reactions of isomeric 1-methyl-3-nitro- and 1-methyl-5-nitropyrazole-4-carbonitriles with anionic S-, O-, and N-nucleophiles (RSH, PhOH, and 3,5-dimethyl-4-nitropyrazole in the presence of K2CO3 or MeONa), it was shown that for N-substituted 3(5)-nitropyrazoles, the nitro group in position 5 is much more reactive than in position 3.
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