Process for preparing 3-pentenic acid esters by carbonylation of alkoxybutenes

    公开(公告)号:CZ290599B6

    公开(公告)日:2002-08-14

    申请号:CZ297197

    申请日:1996-03-15

    Applicant: BASF AG

    Abstract: The present invention relates to a process for preparing 3-pentenic acid esters by carbonylation of alkoxybutenes in the presence of a catalyst and solvent at elevated temperatures and pressures. The invented preparation process is characterized by reacting at least one alkoxybutene containing 1 to 10 carbon atoms in the alkoxy moiety and in allyl position to a double bond with carbon monoxide at a temperature ranging from 60 to 140 degC and under partial pressure of carbon monoxide within the range of 3 to 30 MPa in the presence of a catalyst based on palladium and an ingredient being selected from the group comprising chlorides, acids, nitrogen-containing ligands and phosphorus-containing ligands at molar ration of the ingredient to the catalyst of 0.1 to 10.

    7.
    发明专利
    未知

    公开(公告)号:DE19646679A1

    公开(公告)日:1998-05-14

    申请号:DE19646679

    申请日:1996-11-12

    Applicant: BASF AG

    Abstract: A solid bed catalyst containing either palladium and selenium and/or tellurium on a silica carrier, has a BET surface area of 80-380 m /g, a pore volume of 0.6-0.95 cm /g and a pore diameter of 3 nm to 300 mu m. The proportion of the pore volume with a pore diameter of 10-100 nm is 80-95%. Also claimed are: (i) the preparation of the above catalyst; and (ii) the preparation of 2-buten-1-ol compounds of formula H2R1C-R2C=CR3-CR4R5-OR6 (I) by isomerising 3-buten-1-ol compounds of formula HR1C=CR2-CHR3-CR4R5-OR6 (II) in the presence of hydrogen and the catalyst. In the formulae: R1-R6 = H or aliphatic group (optionally substituted with OH, OR, halogen or carboxyl), or R2 may also be -CHO, or R2 and R5 can combine with the C atoms between them to form an alicyclic ring, or R6 can also be a cycloaliphatic, arylaliphatic or aromatic group or a group of formula C(=O)-R7; R = aliphatic group; and R7 = aliphatic, cycloaliphatic, arylaliphatic or aromatic group.

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