Crystalline modifications to pyraclostrobin

    公开(公告)号:AU2006261191A1

    公开(公告)日:2006-12-28

    申请号:AU2006261191

    申请日:2006-06-19

    Applicant: BASF AG

    Abstract: Crystalline modification IV of pyraclostrobin (A) exhibits at least three reflexes in an X-ray powder diffractogram at 25[deg]C, where the reflections (d) are 6.02 +- 0.01 Å, 4.78 +- 0.01 Å, 4.01 +- 0.01 Å, 3.55 +- 0.01 Å and 3.01 +- 0.01 Å. Independent claims are included for: (1) the preparation of (A); (2) crystalline modification II of pyroclostobin (A1) exhibiting at least four reflexes in a X-ray powder diffractogram at 25[deg]C, where the reflections (d) are 5.93 +- 0.01 Å, 5.82 +- 0.01 Å, 4.89 +- 0.01 Å, 4.78 +- 0.01 Å, 4.71 +- 0.01 Å, 3.97 +- 0.01 Å, 3.89 +- 0.01 Å, 3.77 +- 0.01 Å, 3.75 +- 0.01 Å, 3.57 +- 0.01 Å and 3.43 +- 0.01 Å; (3) the preparation of (A1); and (4) a plant protection agent, which comprises pyraclostrobin in the form of modification IV or in the form of modification II and carrier materials and/or additives. ACTIVITY : Fungicide. MECHANISM OF ACTION : None given.

    12.
    发明专利
    未知

    公开(公告)号:BR0311461A

    公开(公告)日:2005-03-29

    申请号:BR0311461

    申请日:2003-06-06

    Applicant: BASF AG

    Abstract: The present invention relates to a process for the preparation of 1,2,4-triazol-1-ylmethyloxiranes of the formula I in which A and B are identical or different and, independently of one another, are C 1 -C 4 -alkyl, phenyl-C 1 -C 2 -alkyl, C 3 -C 6 -cycloalkyl, C 3 -C 6 -cycloalkenyl, tetrahydropyranyl, tetrahydrofuranyl, dioxanyl or phenyl, where the phenyl radical can carry one to three substituents chosen from the group: halogen, nitro, C 1 -C 4 -alkyl, C l -C 4 -alkyloxy, phenoxy, amino, C 1 -C 2 -haloalkyl or phenylsulfonyl, which comprises reacting a) an oxirane of the formula II in which A and B have the meanings given above and L is a nucleophilically substitutable leaving group, with 4-amino-1,2,4-triazole of the formula III to give 4-amino-1,2,4-triazolium salts of the formula IV and b) deaminating the 4-amino-1,2,4-triazolium salts IV with alkali metal nitrites and acid or organic nitrites to give 1,2,4-triazol-1-ylmethyloxiranes of the formula I, and to 4-aminotriazolium salts of the formula IV as intermediates.

    METHOD FOR THE PRODUCTION OF 1,2,4-TRIAZOLYLMETHYL-OXIRANES

    公开(公告)号:CA2488828A1

    公开(公告)日:2003-12-31

    申请号:CA2488828

    申请日:2003-06-06

    Applicant: BASF AG

    Abstract: The invention relates to a method for the production of 1,2,4-triazol-1-yl- methyl-oxiranes of formula (I) wherein A and B are the same or different and independently represent C1-C4-alkyl, phenyl-C1-C2-alkyl,. C3 --C6-cycloalkyl , C3-C6-cycloalkenyl, tetrahydropyranyl, tetrahydrofuranyl, dioxanyl or phenyl . The phenyl radical can contain 1 3 substituents selected form the group: halogen, nitro, C1-C4-alkyl, C1-C4-alkyloxy, phenoxy, amino, C1-C2- halogenalkyl or phenylsulfonyl, characterised in that a) an oxirane of formu la (II) wherein A and B have the above mentioned meaning and L represents a nucleophilically substitutable leaving group which is reacted with 4-amino- 1,2,4-triazol of formula (III), IV to form 4-amino-1,2,4-triazolium salts of formula (IV). The invention also relates to a method for the production of l,2,4-triazolylmethyl-oxiranes.

    Crystalline modifications to pyraclostrobin

    公开(公告)号:NZ564023A

    公开(公告)日:2010-11-26

    申请号:NZ56402306

    申请日:2006-06-19

    Applicant: BASF AG

    Abstract: Disclosed is a crystalline modification IV of pyraclostrobin which, in an X-ray powder diffractogram at 25°C, shows at least three of the following reflexes: d = 6.02 ± 0.01 Å, d = 4.78 ± 0.01 Å, d = 4.01 ± 0.01 Å, d = 3.55 ± 0.01 Å and d = 3.01 ± 0.01 Å. Also disclosed is a process for preparing a crystalline modification IV of pyraclostrobin as defined above, which comprises: i) dissolving a pyraclostrobin form different from modification IV in an organic solvent or solvent mixture, where the organic solvent or solvent mixture comprises at least 70% by volume of at least one fully water-miscible organic solvent L1 (such as methanol, ethanol, acetone or butanone) and if appropriate up to 30% by volume of water; and ii) effecting crystallization of pyraclostrobin over a period of at least 10 h and/or in the presence of seed crystals of modification IV.

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