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    14.
    发明专利
    未知

    公开(公告)号：DE4233387A1

    公开(公告)日：1994-04-07

    申请号：DE4233387

    申请日：1992-10-05

    Applicant: BASF AG

    Inventor： EBEL KLAUS DR ,  SCHROEDER JUERGEN DR

    IPC: C07C11/12 ,  C07C33/03 ,  C07C33/042 ,  C07C49/675 ,  C07C50/16 ,  C07C33/025

    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.

    15.
    发明专利
    未知

    公开(公告)号：DE4204969A1

    公开(公告)日：1993-08-26

    申请号：DE4204969

    申请日：1992-02-19

    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.

    METHOD FOR THE PRODUCTION OF ACRYLIC ACID BY HETEROGENEOUSLY-CATALYZED GAS-PHASE OXIDATION
    17.
    发明专利
    METHOD FOR THE PRODUCTION OF ACRYLIC ACID BY HETEROGENEOUSLY-CATALYZED GAS-PHASE OXIDATION 未知

    公开(公告)号：MY139958A

    公开(公告)日：2009-11-30

    申请号：MYPI20023634

    申请日：2002-09-27

    Applicant: BASF AG

    Inventor： NESTLER GERHARD DR ,  SCHROEDER JUERGEN DR

    IPC: C07C51/16 ,  B01J23/00 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00 ,  C07C51/25

    Abstract: ACRYLIC ACID IS PREPARED FROM PROPENE BY MEANS OF GAS-PHASE OXIDATION BY A PROCESS IN WHICH A STARTING GAS MIXTURE WHICH CONTAINS PROPENE AND STEAM AND WHOSE MOLAR PROPENE/STEAM RATIO IS  1 AND WHOSE PROPENE CONTENT IS ≤ 5% IS PASSED AT ELEVATED TEMPERATURES THROUGH A FIXED CATALYST BED COMPRISING SUCCESSIVE CATALYST PART-BEDS A AND B, THE PART-BED A PASSED THROUGH FIRST CONTAINING, AS ACTIVE MATERIAL, A MIXED OXIDE CONTAINING THE ELEMENTS MO, BI AND FE AND THE PART-BED B CONTAINING, AS ACTIVE MATERIAL, A MIXED OXIDE CONTAINING THE ELEMENTS MO AND V, IN A MANNER SUCH THAT AT LEAST 96.5 MOL % OF PROPENE ARE CONVERTED IN A SINGLE PASS THROUGH PART-BED A.

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