INTERMEDIATE COMPOUNDS FOR PREPARING DERIVATIVES OF 3-HYDROXY-4-ARYL-5-OXOPYRAZOLINE SHOWING HERBICIDE EFFECT

摘要

FIELD: organic chemistry, herbicides. ^ SUBSTANCE: invention relates to new intermediate compounds used for synthesis of derivatives of 3-hydroxy-4-aryl-5-oxopyrazoline exerting herbicide effect. Invention describes compounds of the formula (IV)and (IVa): wherein R4 and R5 form in common the group: -C-R14(R15)-C-R16(R17)-O-C-R18(R19)-C-R20(R21)-(Z2) wherein each among R14, R15, R16, R17, R18, R19, R20 and R21 represents independently of one another hydrogen atom or (C1-C4)-alkyl. Invention provides preparing new intermediate compounds that are useful for preparing the end product eliciting valuable herbicide properties. ^ EFFECT: improved preparing method. ^ 24 tbl, 14 ex