New nitropyrazole esters, a process for their preparation...

Details New nitropyrazole esters, a process for their preparation... New nitropyrazole esters, a process for their preparation...

C - Chemistry, Metallurgy

07

D

C07D 231/16 (2006.01)

Patent

CA 2210443

New nitropyrazole esters of the formula Image , in which R1 represents C1-C6-alkyl, are prepared by nitration of the corresponding pyrazole esters. The nitropyrazole esters permit the preparation of a known nitropyrazole amide in a particularly simple and economical manner and thereby improve the preparation of active compounds which are accessible from the nitropyrazole amide.

De nouveaux esters de nitropyrazole de formule Image , dans lesquels R1 représente C1-C6-alkyle, sont préparés par nitration des esters de pyrazole correspondants. Les esters de nitropyrazole permettent la préparation d'un nitropyrazole amide connu, de façon particulièrement simple et économique, améliorant ainsi la préparation de composés actifs qui sont accessibles par le nitropyrazole amide.

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