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    42.
    发明专利
    未知

    公开(公告)号：AT165348T

    公开(公告)日：1998-05-15

    申请号：AT94925456

    申请日：1994-08-13

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH

    IPC: C07B35/04 ,  C07D231/12 ,  C07D521/00

    Abstract: PCT No. PCT/EP94/02708 Sec. 371 Date Feb. 15, 1996 Sec. 102(e) Date Feb. 15, 1996 PCT Filed Aug. 13, 1994 PCT Pub. No. WO95/06036 PCT Pub. Date Mar. 2, 1995A process for preparing pyrazole and its derivatives of the formula I I where R1, R2, R3 and R4 are each hydrogen, halogen, nitro, carboxyl, sulfonyl or C-organic radicals, from alpha,beta-unsaturated carbonyl compounds of the formula II II and hydrazine or hydrazine derivatives of the formula III H2N-NHR4 III wherein, initially without additional diluent, an alpha,beta-unsaturated carbonyl compound of the formula II is reacted with hydrazine or a hydrazine derivative of the formula III, and the resulting reaction mixture is reacted in another step with a mixture of sulfuric acid and iodine or a compound which liberates iodine or hydrogen iodide.

    PROCESS FOR PREPARING N-SUBSTITUTED PYRAZOLES
    43.
    发明专利
    PROCESS FOR PREPARING N-SUBSTITUTED PYRAZOLES 未知

    公开(公告)号：SK117697A3

    公开(公告)日：1998-02-04

    申请号：SK117697

    申请日：1996-02-27

    Applicant: BASF AG

    Inventor： MERKLE HANS R ,  FRETSCHNER ERICH ,  SCHRODER JURGEN

    IPC: C07D231/12 ,  C07D521/00

    Abstract: PCT No. PCT/EP96/00790 Sec. 371 Date Aug. 20, 1997 Sec. 102(e) Date Aug. 20, 1997 PCT Filed Feb. 27, 1996 PCT Pub. No. WO96/27589 PCT Pub. Date Sep. 12, 1996A process for the preparation of an N-alkyl- or N-phenylalkyl-substituted pyrazole I by reacting the corresponding N-unsubstituted pyrazole II with an alcohol III of the formula R1-OH where R1 is the same alkyl or phenylalkyl group to be added to the unsubstituted nitrogen group -NH- of the pyrazole reactant. Both of the reactants, i.e. the pyrazole II and alcohol III compounds, are catalytically reacted in the liquid phase in a molar ratio of from 0.001:1 to 1:1, at temperatures of 50 DEG -400 DEG C. and under a subatmosheric pressure of from 0.8 bar up to a superatmospheric pressure of 250 bar. The catalyst required for this liquid phase reaction is selected as being at least one or more non-heterogeneous acid catalysts, their alkyl esters or their acid anhydrides.

    45.
    发明专利
    未知

    公开(公告)号：NO974044D0

    公开(公告)日：1997-09-03

    申请号：NO974044

    申请日：1997-09-03

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH ,  SCHROEDER JUERGEN

    IPC: C07D231/12 ,  C07D521/00

    Abstract: PCT No. PCT/EP96/00790 Sec. 371 Date Aug. 20, 1997 Sec. 102(e) Date Aug. 20, 1997 PCT Filed Feb. 27, 1996 PCT Pub. No. WO96/27589 PCT Pub. Date Sep. 12, 1996A process for the preparation of an N-alkyl- or N-phenylalkyl-substituted pyrazole I by reacting the corresponding N-unsubstituted pyrazole II with an alcohol III of the formula R1-OH where R1 is the same alkyl or phenylalkyl group to be added to the unsubstituted nitrogen group -NH- of the pyrazole reactant. Both of the reactants, i.e. the pyrazole II and alcohol III compounds, are catalytically reacted in the liquid phase in a molar ratio of from 0.001:1 to 1:1, at temperatures of 50 DEG -400 DEG C. and under a subatmosheric pressure of from 0.8 bar up to a superatmospheric pressure of 250 bar. The catalyst required for this liquid phase reaction is selected as being at least one or more non-heterogeneous acid catalysts, their alkyl esters or their acid anhydrides.

    47.
    发明专利
    未知

    公开(公告)号：NO972900D0

    公开(公告)日：1997-06-20

    申请号：NO972900

    申请日：1997-06-20

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  BRENNER KARL SIEGFRIED ,  FRETSCHNER ERICH ,  SCHOENHERR MICHAEL ,  GASTEL ANNE VAN

    IPC: A01N39/02 ,  A01N39/04 ,  C07C51/41 ,  C07C59/68 ,  C07C59/70

    Abstract: PCT No. PCT/EP95/04934 Sec. 371 Date Jun. 18, 1997 Sec. 102(e) Date Jun. 18, 1997 PCT Filed Dec. 13, 1995 PCT Pub. No. WO96/20155 PCT Pub. Date Jul. 4, 1996Process for preparing solid, free-flowing water-soluble salts of aryloxy-C1-C4-alkanecarboxylic acids by reacting the aryloxy-C1-C4-alkanecarboxylic acids with a salt-forming base, the salt formation taking place in the melt in the presence or absence of an entraining agent suitable for the azeotropic removal of water or in solution in the presence of an entraining agent suitable for the azeotropic removal of water and, if appropriate, removing the entraining agent from the reaction mixture during the reaction or subsequently and then isolating the solid salts in a customary manner.

    Method of preparing 1,2-dimethyl-3,5-diarylpyrazolium methylsulphates
    49.
    发明专利
    Method of preparing 1,2-dimethyl-3,5-diarylpyrazolium methylsulphates 未知

    公开(公告)号：AU6738096A

    公开(公告)日：1997-03-05

    申请号：AU6738096

    申请日：1996-07-26

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH

    IPC: C07D231/12

    Abstract: PCT No. PCT/EP96/03316 Sec. 371 Date Jan. 13, 1998 Sec. 102(e) Date Jan. 13, 1998 PCT Filed Jul. 26, 1996 PCT Pub. No. WO97/06148 PCT Pub. Date Feb. 20, 1997A process for the preparation of 1,2-dimethyl-3,5-diaryl-pyrazolium methylsulfates of the formula I I where R1 and R2 independently of one another are hydrogen, C1-C4-alkyl, C3-C8-cycloalkyl, C1-C4-alkoxy, halogen, nitro, C1-C4-haloalkyl or aryl all of which are inert under the reaction conditions, in which 1-methyl-3,5-diarylpyrazoles of the formula II II where R1 and R2 have the abovementioned meanings are reacted with a) methanol and SO3, b) methanol and sulfuric acid or optionally, c) methanol and methylsulfuric acid elevated temperatures.

    PROCESS FOR PREPARING PYRAZOLE AND ITS DERIVATIVES
    50.
    发明专利
    PROCESS FOR PREPARING PYRAZOLE AND ITS DERIVATIVES 未知

    公开(公告)号：HUT74479A

    公开(公告)日：1997-01-28

    申请号：HU9600419

    申请日：1994-08-13

    Applicant: BASF AG

    Inventor： FRETSCHNER ERICH ,  MERKLE HANS RUPERT

    IPC: C07B35/04 ,  C07D231/12 ,  C07D521/00

    Abstract: PCT No. PCT/EP94/02708 Sec. 371 Date Feb. 15, 1996 Sec. 102(e) Date Feb. 15, 1996 PCT Filed Aug. 13, 1994 PCT Pub. No. WO95/06036 PCT Pub. Date Mar. 2, 1995A process for preparing pyrazole and its derivatives of the formula I I where R1, R2, R3 and R4 are each hydrogen, halogen, nitro, carboxyl, sulfonyl or C-organic radicals, from alpha,beta-unsaturated carbonyl compounds of the formula II II and hydrazine or hydrazine derivatives of the formula III H2N-NHR4 III wherein, initially without additional diluent, an alpha,beta-unsaturated carbonyl compound of the formula II is reacted with hydrazine or a hydrazine derivative of the formula III, and the resulting reaction mixture is reacted in another step with a mixture of sulfuric acid and iodine or a compound which liberates iodine or hydrogen iodide.

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