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    21.
    发明专利
    未知

    公开(公告)号：DE59303217D1

    公开(公告)日：1996-08-22

    申请号：DE59303217

    申请日：1993-02-08

    Applicant: BASF AG

    Inventor： EBEL KLAUS DR ,  SCHROEDER JUERGEN DR

    IPC: C07C319/14 ,  C07C323/22 ,  C07D333/54

    Abstract: Process for the preparation of benzo[b]thiophenes of the general formula I in which R ,R ,R ,R independently of one another denote hydrogen, C1- to C4-alkyl, C1- to C4-alkoxy, C1- to C4-haloalkyl, nitro, cyano, halogen, C1- to C4-alkylcarbonyl, benzoyl, C1- to C4-alkylcarbonylamino, benzoylamino, N-C1- to C4-alkylphenylamino, C1- to C4-alkoxycarbonyl, C1- to C4-alkylsulphonyl, phenylsulphonyl, aminosulphonyl, aminocarbonyl, C1- to C4-phenylalkyl and nitrobenzyl or R , R or R , R or R , R denote a butadienyl chain which is optionally substituted by R to R , by a) reacting thiophenols of the general formula II in which the substituents R to R have the abovementioned meanings, with chloroacetaldehyde at temperatures from 0 to 150 DEG C and b) cyclising the resultant (arylthio)acetaldehyde of the general formula III in which the substituents R to R have the abovementioned meanings, by introducing it into polyphosphoric acid or a mixture of phosphoric acid and phosphorus pentoxide at temperatures of from 100 to 300 DEG C and pressures from 0.001 to 1 bar.

    22.
    发明专利
    未知

    公开(公告)号：DE59300309D1

    公开(公告)日：1995-08-03

    申请号：DE59300309

    申请日：1993-09-29

    Applicant: BASF AG

    Inventor： EBEL KLAUS DR ,  SCHROEDER JUERGEN DR

    IPC: C07C11/12 ,  C07C33/03 ,  C07C33/042 ,  C07C49/675 ,  C07C50/16

    Abstract: tert-Amyl compounds of the general formula I in which R is and novel processes for the preparation of 2-tert-amylbutadiene by dehydration of 3,4,4-trimethylhex-1-en-3-ol at temperatures from 100 to 350@C and pressures from 0.01 to 50 bar on acidic catalysts, their preparation by partial hydrogenation of 3,4,4-trimethylhex-1-in-3-ol at temperatures from 0 to 50@C and pressures from 0.01 to 50 bar, and their preparation by reacting tert-amyl methyl ketone (3,3-dimethylpentan-2-one) with acetylene in the presence of basic catalysts at temperatures from 0 to 60@C and pressures from 0.01 to 50 bar, furthermore the reaction of 2-tert-amylbutadiene with 1,4-naphthoquinone at temperatures from 20 to 200@C and pressures from 0.01 to 50 bar to give 2-tert-amyl-1,4,4a,9a-tetrahydroanthraquinone, followed by oxidation at temperatures from 0 to 50@C in the presence of a strong base.

    Process for the preparation of N-substituted pyrazoles
    23.
    发明专利
    Process for the preparation of N-substituted pyrazoles 未知

    公开(公告)号：DE4318960A1

    公开(公告)日：1994-12-15

    申请号：DE4318960

    申请日：1993-06-08

    Applicant: BASF AG

    Inventor： EBEL KLAUS DR ,  SCHROEDER JUERGEN DR ,  GROENING CARSTEN DR ,  DOCKNER TONI DR ,  MERKLE HANS RUPERT DR

    IPC: C07D231/12 ,  C07D521/00

    Abstract: Process for the preparation of N-substituted pyrazoles of the formula I in which R is C1- to C12-alkyl or C7- to C20-phenylalkyl and R , R and R independently of one another are hydrogen, C1- to C12-alkyl or C7- to C20-phenylalkyl by reaction of pyrazoles of the formula II in which R , R and R have the abovementioned meanings, with compounds of the formula III R - O - R in which R has the abovementioned meanings and R is hydrogen or R , in the presence of a catalyst at temperatures from 200 to 550 DEG C and pressures from 0.001 to 50 bar by employing a heterogeneous catalyst as the catalyst.

    Prepn. of N-(phenyl)alkyl-pyrazole or deriv., useful as intermediate
    27.
    发明专利
    Prepn. of N-(phenyl)alkyl-pyrazole or deriv., useful as intermediate 未知

    公开(公告)号：DE19509958A1

    公开(公告)日：1996-09-19

    申请号：DE19509958

    申请日：1995-03-18

    Applicant: BASF AG

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

    IPC: C07D231/12 ,  C07D521/00

    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.

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