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    2.
    发明专利
    未知

    公开(公告)号：DE3881645D1

    公开(公告)日：1993-07-15

    申请号：DE3881645

    申请日：1988-11-04

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  FRANK JUERGEN DR

    IPC: C07D319/06 ,  C07D319/08

    Abstract: (A) Glyoxal monoacetals of formula (Ia) are new, where R5 and R6 = 1-4C alkyl or R5+R6 = (CH2)n or (CH2)mO(CH2)p; n = 3-5; m = 1-3; p = 1-2; R7 = H, or may be 1-4C alkyl when R5=R6=Me. (B) Prodn. of glyoxal monoacetals of formula OHC-CHO (I) is effected by reacting glyoxal (II) with a 1,3-propanediol of formula HO-CHR1-CR2R3-CR4-OH (III) in the presence of H2O and an acid at up to 150 deg.C, using a (III):(II) molar ratio of 0.1-5:1. R1-R4 = 1-6C aliphatic gps. or aromatic gps. or up to three of R1-R4 may be H, or R1+R2 may form a 4- to 7-membered alicyclic ring opt. contg. a heteroatom.

    3.
    发明专利
    未知

    公开(公告)号：DE3933334A1

    公开(公告)日：1991-04-11

    申请号：DE3933334

    申请日：1989-10-06

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  FRANK JUERGEN DR

    IPC: B01J31/02 ,  B01J31/04 ,  C07B61/00 ,  C07C67/317 ,  C07C67/343 ,  C07C67/44 ,  C07C69/67 ,  C07C69/675 ,  C07C69/716 ,  C07C69/738

    Abstract: 3-substituted 2-hydroxy-3-formylpropionic acid esters of the general formula I in which R is a lower alkyl radical and R is a straight-chain or branched alkyl radical containing 1 to 10 carbon atoms. The 2-hydroxy- 3-formylpropionic acid esters of the formula I are obtained by adding an alkanal of the general formula II and an alkyl glyoxylate of the general formula III simultaneously to a catalyst system consisting of a salt or a mixture of a secondary amine and a carboxylic acid in such a way that the temperature does not exceed 90 DEG C, preferably 80 DEG C, or alternatively, by adding one of the reactants of the formulae II or III to a mixture consisting of the catalyst system described above and adding the other reactant in such a way that the temperature does not exceed 90 DEG C. From the 2-hydroxy-3-formylpropionic acid esters of the formula I, the corresponding 3-substituted 3-formylacrylic acid esters can be prepared with good yields by treatment with water-eliminating agents, in particular acetic anhydride.

    4.
    发明专利
    未知

    公开(公告)号：DE59003785D1

    公开(公告)日：1994-01-20

    申请号：DE59003785

    申请日：1990-09-27

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  FRANK JUERGEN DR

    IPC: B01J31/02 ,  B01J31/04 ,  C07B61/00 ,  C07C67/317 ,  C07C67/343 ,  C07C67/44 ,  C07C69/67 ,  C07C69/675 ,  C07C69/716 ,  C07C69/738

    Abstract: 3-substituted 2-hydroxy-3-formylpropionic acid esters of the general formula I in which R is a lower alkyl radical and R is a straight-chain or branched alkyl radical containing 1 to 10 carbon atoms. The 2-hydroxy- 3-formylpropionic acid esters of the formula I are obtained by adding an alkanal of the general formula II and an alkyl glyoxylate of the general formula III simultaneously to a catalyst system consisting of a salt or a mixture of a secondary amine and a carboxylic acid in such a way that the temperature does not exceed 90 DEG C, preferably 80 DEG C, or alternatively, by adding one of the reactants of the formulae II or III to a mixture consisting of the catalyst system described above and adding the other reactant in such a way that the temperature does not exceed 90 DEG C. From the 2-hydroxy-3-formylpropionic acid esters of the formula I, the corresponding 3-substituted 3-formylacrylic acid esters can be prepared with good yields by treatment with water-eliminating agents, in particular acetic anhydride.

    6.
    发明专利
    未知

    公开(公告)号：DE3868141D1

    公开(公告)日：1992-03-12

    申请号：DE3868141

    申请日：1988-05-26

    Applicant: BASF AG

    Inventor： FISCHER ROLF DR ,  FRANK JUERGEN DR ,  MERGER FRANZ DR ,  ROEPER MICHAEL DR ,  VAGT UWE DR

    IPC: C07D307/58 ,  C07D315/00

    Abstract: Prodn. of 2(5H)- furanones of formula (I) comprises reacting 3-formylcarboxylic acid or esters O = C(H)-CH(R1)-C(H)(R2) 0 = C(H)-C(H)(R1)-C(H)(R2)-(O)C-OR3 (II) in presence of acid catalyst at 100-450 deg. C. R1 and R2 = H, 1-6C alkyl, 5-6C cycloalkyl, 7-12C aralkyl or aryl; R3 = H, 1-12C alkyl, 5-6C cycloalkyl, 7-12C aralkyl or aryl. Acid catalysts are acidic oxides of B, AR, Si, P or metals of sub-groups IV-VI,or natural or synthetic zeolites. The catalysts are SiO2, Al2O3, B2O3, TiO2, V2O5, Cr2O6, or X Y or pentasil type zeolites. In (II), R1 and R2 are 1-6C alkyl and R3 = 1-12C alkyl. Reaction is at 200-350 deg. C and 1-50 (pref. 1-5) bar, and lactonisation is in presence of water and/or 1-4C alcohol. Where a heterogeneous catalyst is used, it is 0.5-20 wt. % on (II) for liq. phase reaction, or 0.1-10 (esp. 0.1-5)g (II) is used per g catalyst per hr., for gas phase reaction. Reaction is opt. in presence of 0.1-50 (pref. 0.5-20) moles solvent per mole (II).

    8.
    发明专利
    未知

    公开(公告)号：DE3767208D1

    公开(公告)日：1991-02-14

    申请号：DE3767208

    申请日：1987-05-21

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  FISCHER ROLF DR ,  HORLER HANS DR ,  FRANK JUERGEN DR

    IPC: C07C45/00 ,  C07C45/74 ,  C07C47/277 ,  C07C67/00 ,  C07D319/06

    Abstract: 4-Acetals of butene-1,4-dial of the formula … … in which R represents an alkyl, alkenyl, cycloalkyl or aralkyl radical having 1 to 12 carbon atoms, which may contain alkoxy groups, or both R together denote an alkylene or alkenylene radical having 2 to 10 carbon atoms, which may contain alkoxy groups, and R denotes an alkyl, alkenyl or alkynyl radical having 1 to 12 carbon atoms, which may be substituted by cycloaliphatic, aromatic or heterocyclic radicals or by hydroxyl, ether, thioether, acyl, alkylamino, carboxyl or carbalkoxy groups, or denotes a substituted or unsubstituted aryl radical or an alkoxy, alkylthio or acyloxy group, are prepared by reacting glyoxal monoacetals of the formula … … with aldehydes of the formula… R -CH2-CHO III,… at temperatures up to 150 DEG C

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