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The preparation of 5‐methyl‐3,5‐dimethyl‐ and 3,4,5‐trimethyl‐l[2′‐(5′‐nitrothienyl)]pyrazoles from thienylhydrazines are described. The 1H‐nmr spectra of these compounds are discussed.
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GALVEZ et al. (1982) studied this question.
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