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    PREPARATION OF N-SUBSTITUTED PYRAZOLES BY REACTION OF A PYRAZOLE WITH AN ALCOHOL
    111.
    发明专利
    PREPARATION OF N-SUBSTITUTED PYRAZOLES BY REACTION OF A PYRAZOLE WITH AN ALCOHOL 未知

    公开(公告)号：NZ303185A

    公开(公告)日：1999-01-28

    申请号：NZ30318596

    申请日：1996-02-27

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  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.

    Process for producing optically active 2-halogen propionic acids
    112.
    发明专利
    Process for producing optically active 2-halogen propionic acids 未知

    公开(公告)号：AU699638B2

    公开(公告)日：1998-12-10

    申请号：AU4436896

    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.

    PROCESS FOR PREPARING N-SUBSTITUTED PYRAZOLES
    113.
    发明专利
    PROCESS FOR PREPARING N-SUBSTITUTED PYRAZOLES 未知

    公开(公告)号：HU9801876A2

    公开(公告)日：1998-11-30

    申请号：HU9801876

    申请日：1996-02-27

    Applicant: BASF AG

    Inventor： FRETSCHNER ERICH ,  MERKLE HANS RUPERT ,  SCHROEDER JUERGEN

    IPC: C07D231/12

    Abstract: The prepn. of an N-substd. pyrazole deriv. of formula (I) comprises reacting pyrazole deriv. of formula (II) with an alcohol of formula R1OH (III) at 50-400 deg C in the presence of a catalyst. The mole ratio (II): (III) is 0.001-1:1 and reaction is carried out in the liq. phase at a pressure of below atmos. to 250 bar. The catalyst is an acid and/or its alkyl ester or anhydride. The mole ratio catalyst:(II) is 0.0001-0.5:1. R1 = 1-12C alkyl or 7-20C phenylalkyl; R2-R4 = H, 1-12C alkyl, 7-20C phenylalkyl or opt. substd. aryl.

    116.
    发明专利
    未知

    公开(公告)号：TR199700896T1

    公开(公告)日：1998-01-21

    申请号：TR9700896

    申请日：1996-02-27

    Applicant: BASF AG

    Inventor： MERKLE DR HANS RUPERT ,  FRETSCHNER ERICH ,  SCHROEDER DR 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.

    METHOD OF OBTAINING OPTICALLY ACTIVE 2-HALOGENOPROPIONIC ACIDS
    118.
    发明专利
    METHOD OF OBTAINING OPTICALLY ACTIVE 2-HALOGENOPROPIONIC ACIDS 未知

    公开(公告)号：PL321469A1

    公开(公告)日：1997-12-08

    申请号：PL32146996

    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.

    119.
    发明专利
    未知

    公开(公告)号：FI973592A0

    公开(公告)日：1997-09-03

    申请号：FI973592

    申请日：1997-09-03

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH ,  SCHROEDER JUERGEN

    IPC: C07D231/12 ,  C07D521/00 ,  C07D

    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.

    120.
    发明专利
    未知

    公开(公告)号：FI973592A

    公开(公告)日：1997-09-03

    申请号：FI973592

    申请日：1997-09-03

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH ,  SCHROEDER JUERGEN

    IPC: C07D231/12 ,  C07D521/00 ,  C07D

    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.

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