133.
    发明专利
    未知

    公开(公告)号:DE3803860A1

    公开(公告)日:1989-08-17

    申请号:DE3803860

    申请日:1988-02-09

    Applicant: BASF AG

    Abstract: N,N'-disubstituted piperazines of the general formula I (1) where the group is unsaturated (=) or saturated (-) and the substituents R1, R2 and A have the following meanings: A is -, -CH=, -CH2-, -CH2-CH2-, R1 is alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, alkylcycloalkyl, cycloalkenylalkyl, alkylcycloalkenyl, bicycloalkyl, bicycloalkylalkyl or alkylbicycloalkyl, these radicals being unsubstituted or substituted by hydroxy, halogen, alkoxy or trialkylsilyl, R1 is further heterocycloalkyl with oxygen and/or sulfur, heterocycloalkylmethyl with oxygen and/or sulfur, alkyl-substituted heterocycloalkylmethyl with oxygen and/or sulfur, and R2 is alkyl, alkoxy, trimethylsilyl, cycloalkyl, alkylthio, and plant-physiologically tolerated salts thereof, and fungicides containing these compounds.

    137.
    发明专利
    未知

    公开(公告)号:DE59308171D1

    公开(公告)日:1998-04-02

    申请号:DE59308171

    申请日:1993-08-12

    Applicant: BASF AG

    Abstract: Tetrahydropyran-4-carboxylic acid and its esters of the general formula I in which R denotes hydrogen, C1- to C6-alkyl, C5- to C8-cycloalkyl or aryl, are prepared by reacting dihydro-2(3H)furanones of the general formula II in which R denotes hydrogen, C1- to C6-alkyl or -CO-R and R denotes hydrogen or C1- to C6-alkyl with water or alcohols of the general formula III R -OH (III> in which R has the abovementioned meaning, at temperatures from 200 to 350 DEG C in the presence of acidic heterogeneous catalysts, by employing fixed-bed acidic heterogeneous catalysts.

Patent Agency Ranking