METHOD FOR PREPARING DERIVATIVES OF 5-AMINO-1-ARYL-3-CYANOPYRAZOLE AND INTERMEDIATE COMPOUNDS FOR THEIR SYNTHESIS Russian patent published in 2004 - IPC

FIELD: organic chemistry, chemical technology, pesticides.

SUBSTANCE: invention relates to a method for preparing derivatives of 5-amino-1-aryl-3-cyanopyrazole of the formula (I)

wherein W represents -CR⁴; R¹ means halogenalkyl; R² means halogen atom; R³ means hydrogen atom; R⁴ means halogen atom. Method involves interaction of compound of the formula (II)

wherein R¹, R², R³ and W have values determined above; R⁷ represents a removing group, and R⁸ represents chlorine or bromine atom with cyanide salt. Invention relates also to intermediate compounds of the formula (II) and formula (IV)

. Invention provides preparing pesticide intermediate compounds of 5-amino-1-aryl-3-cyanopyrazole by suitable and simple method with high yield and high purity.

EFFECT: improved preparing method.

9 cl, 3 ex