Method for producing substituted parasols

Details Method for producing substituted parasols Method for producing substituted parasols

C - Chemistry, Metallurgy

07

D

C07D 231/38 (2006.01) C07D 231/54 (2006.01) C07D 231/56 (2006.01) C07D 409/04 (2006.01)

Patent

CA 2619780

The invention relates to a method for producing substituted 5-aminopyrazoles consisting in converting a carbonyl compound together with hydrazine derivative and chlorine cyanide into N-cyanohydrazone, which is cyclised in the presence of a strong base.

La présente invention concerne un procédé pour préparer des 5-aminopyrazols substitués, dans le cadre duquel un composé de carbonyle est converti avec un dérivé d'hydrazine et du chlorure de cyanogène, en N-cyanohydrazone qui est rendue cyclique en la présence d'une base forte.

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