Zpusob prípravy 1-substituovaných 5-nebo 3-hydroxypyrazolu

    公开(公告)号:CZ301828B6

    公开(公告)日:2010-07-07

    申请号:CZ20011713

    申请日:1999-11-06

    Applicant: BASF AG

    Abstract: Je popsán zpusob prípravy 1-substituovaných 5- a/nebo 3-hydroxypyrazolu vzorcu I a II, který zahrnuje reakci (a) alkylvinyletheru vzorce V, s fosgenem vzorce VIa, "difosgenem" vzorce VIb nebo "trifosgenem" vzorce VIc za vzniku acylchloridu vzorce VII, (b) jeho konverzi na odpovídající 3-alkoxyakryloylchlorid vzorce VIII odstranením chlorovodíku a (c) esterifikaci tohoto produktu alkoholem vzorce IX, za vzniku odpovídajícího alkyl-3-alkoxyakrylatu vzorce III, a reakci tohoto alkyl-3-alkoxyakrylatu vzorce III s hydrazinem vzorce IV, (d) pri pH 6 až 11 za vzniku 5-hydroxypyrazolu vzorce I nebo (e) pri pH 11 až 14 za vzniku 3-hydroxypyrazolu vzorce II. Význam všech substituentu je uveden v popise.

    310.
    发明专利
    未知

    公开(公告)号:BRPI0517879A

    公开(公告)日:2008-10-21

    申请号:BRPI0517879

    申请日:2005-11-24

    Applicant: BASF AG

    Abstract: The invention relates to 2-cyano-3-(halo)alkoxy-benzenesulfonamide compounds I where the variables Alk and R1 to R5 are as defined in claim 1, and/or to their agriculturally useful salts. Moreover, the present invention relates to the use of compounds I and/or their salts for combating animal pests; agricultural compositions comprising such an amount of at least one compound of the general formula I and/or at least one agriculturally useful salt of I and at least one inert liquid and/or solid agronomically acceptable carrier that it has a pesticidal action and, if desired, at least one surfactant; and a method of combating animal pests which comprises contacting the animal pests, their habit, breeding ground, food supply, plant, seed, soil, area, material or environment in which the animal pests are growing or may grow, or the materials, plants, seeds, soils, surfaces or spaces to be protected from animal attack or infestation with a pesticidally effective amount of at least one 2-cyano-3-(halo)alkoxy-benzenesulfonamide compound of the formula I and/or at least one agriculturally acceptable salt thereof. a method for the for the protection of seeds from soil insects and of the resulting plant's roots and shoots from soil and foliar insects comprising contacting the seeds before sowing and/or after pregermination with a 2-cyano-3-(halo)alkoxy-benzenesulfonamide compound of the general formula I.

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