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    61.
    发明专利
    未知

    公开(公告)号：DE59610910D1

    公开(公告)日：2004-03-11

    申请号：DE59610910

    申请日：1996-02-27

    Applicant: BASF AG

    Inventor： MERKLE 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.

    62.
    发明专利
    未知

    公开(公告)号：AT258922T

    公开(公告)日：2004-02-15

    申请号：AT96905803

    申请日：1996-02-27

    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.

    Process for preparing 4-amino-5-chloro-1-phenylpyridazin-6-one
    64.
    发明专利
    Process for preparing 4-amino-5-chloro-1-phenylpyridazin-6-one 未知

    公开(公告)号：CZ20013470A3

    公开(公告)日：2002-03-13

    申请号：CZ20013470

    申请日：2000-03-30

    Applicant: BASF AG

    Inventor： MEKLE HANS RUPERT ,  HERBIG KLAUS ,  FRETSCHNER ERICH ,  FROHLICH HELMUT

    IPC: C07D237/22

    Abstract: In a process for preparing 4-amino-5-chloro-1-phenylpyridazin-6-one by reacting 4,5-dichloro-1-phenylpyridazin-6-one with aqueous ammonia in the presence of a catalyst, the catalyst used is soluble in the aqueous alkaline reaction medium but is essentially insoluble in the reaction medium which has been acidified after removal of the 4-amino-5-chloro-1-phenylpyridazin-6-one.The process of the present invention makes it possible for the catalyst to be recovered and reused in a simple manner.

    PROCESS FOR PREPARING N-SUBSTITUTED PYRAZOLES
    66.
    发明专利
    PROCESS FOR PREPARING N-SUBSTITUTED PYRAZOLES 未知

    公开(公告)号：BG63304B1

    公开(公告)日：2001-09-28

    申请号：BG10190897

    申请日：1997-09-24

    Applicant: BASF AG

    Inventor： MERKELE HANS R ,  FRETSCHNER ERICH ,  SCHROEDER JUERGEN

    IPC: C07D231/12 ,  C07D521/00

    Abstract: A process is disclosed for preparing N-substituted pyrazoles having the general formula in which R1 stands for C1 to C12 alkyl or C7 to C20 phenylalkyl, and R2, R3, R4 represent independently from each other hydrogen, C1 to C12 alkyl, C7 to C20 phenylalkyl or optionally substituted aryl residues, by reacting pyrazoles having the general formula 10 claims in which R2, R3 and R4 have above-said meanings, with an alcohol having the general formula R1-O-H, in which R1 has above-said meanings, at temperatures from 50 to 400oC in the presence of a catalyst. The reaction of pyrazole (II) with compound (III) is carried out in a molar ratio from 0.001:1 to 1: 1 in the liquid phase at a slight negative pressure up to an over pressure of 250 bars. Acids. their alkyl esters and/or their anhydrides are used as catalysts in a molar ratio from 0.0001: 1 to 0.5: 1 in relation to pyrazole (II). 10 claims

    67.
    发明专利
    未知

    公开(公告)号：DE59508152D1

    公开(公告)日：2000-05-11

    申请号：DE59508152

    申请日：1995-12-13

    Applicant: BASF AG

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

    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.

    69.
    发明专利
    未知

    公开(公告)号：NO20000787D0

    公开(公告)日：2000-02-17

    申请号：NO20000787

    申请日：2000-02-17

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  WOERZ OTTO ,  FRETSCHNER ERICH ,  HANSEN HANSPETER ,  MUELLER ALBRECHT ,  BENZ KURT

    IPC: C07D285/24 ,  C07D285/16 ,  C07D

    Abstract: A process for preparing 3-isopropyl-1H-2,1,3-benzothiadiazin-4 (3H)-one 2,2-dioxide (I) or a salt of Iwhich comprises reacting anthranilic isopropylamide IIsimultaneously with sulfur trioxide or chlorosulfonic acid in the presence of an organic base or with adducts of sulfur trioxide and organic basesandphosphorus oxychloride at from 50° C. to the reflux temperature, followed, if appropriate, by conversion into its salts, is described.

    70.
    发明专利
    未知

    公开(公告)号：DE59601603D1

    公开(公告)日：1999-05-12

    申请号：DE59601603

    申请日：1996-01-04

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH ,  HANSEN HANSPETER ,  ZIPPERER BERNHARD

    IPC: C07B57/00 ,  C07C51/09 ,  C07C51/487 ,  C07C53/19

    Abstract: PCT No. PCT/EP96/00012 Sec. 371 Date Jan. 7, 1997 Sec. 102(e) Date Jan. 7, 1997 PCT Filed Jan. 4, 1996 PCT Pub. No. WO96/22272 PCT Pub. Date Jul. 25, 1996The present invention relates to a process for the preparation of optically active 2-halopropionic acids, in which the corresponding optically active alkyl 2-halopropionates are caused to react with a carboxylic acid at elevated temperature in a transacylation reaction with the formation of the optically active 2-halopropionic acid and the alkyl carboxylate, and the optically active 2-halopropionic acid obtained is separated from the reaction mixture. The optically active products produced are important intermediates for the preparation of plant protectants and pharmaceuticals.

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