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12.1.4.1.1.5.1 Variation 1: C-Nitration of Pyrazoles with Nitric Acid

DOI: 10.1055/sos-SD-012-00002

Stanovnik, B.; Svete, J.Science of Synthesis, (200212176.

The nitration of N-unsubstituted and N-substituted pyrazoles with nitric acid or with a mixture of sulfuric and nitric acids affords 4-nitropyrazoles 418 (Scheme 234). The 1-aryl substituents are also themselves nitrated at the 4-position.[‌767‌‌770‌]

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