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    Butene-diol(s) and butene-diol ether(s) prepn. - by reacting vinyl oxirane(s) with water or 1-10C alcohol(s) in absence of catalyst
    102.
    发明专利
    Butene-diol(s) and butene-diol ether(s) prepn. - by reacting vinyl oxirane(s) with water or 1-10C alcohol(s) in absence of catalyst 未知

    公开(公告)号：DE4342030A1

    公开(公告)日：1994-06-16

    申请号：DE4342030

    申请日：1993-12-09

    Applicant: BASF AG

    Inventor： PINKOS ROLF DR ,  FISCHER ROLF DR

    IPC: C07C29/10 ,  C07C29/56 ,  C07C41/03 ,  C07C43/178 ,  C07C29/128 ,  C07C33/035 ,  C07C41/02

    Abstract: Prepn. of butenediols and butenediol ethers of formula (I) and formula R3O-CH-C(R1)=C(R2)-CH2-OR4 (II) comprises reaction of vinyl-oxiranes of formula (III) with water and/or 1-10C alcohols at 0-250 deg.C in the absence of catalyst. R1, R2 = H or 1-5C alkyl, R3 = R4 = H or one of these gps. = H and the other = 1-10C alkyl or hydroxyalkyl. USE/ADVANTAGE - 2-Butene-1,4-diol is useful for the prodn. of butane-1,4-diol and 1-butene-3,4-diol is useful as an intermediate in the prodn. of vitamin A, the diol ethers are useful as crosslinkable diols for the prodn. of polyurethanes and polyesters. This process gives (I) and (II) in high yield and with high selectivity (such that the yield of the vitamin precursor (I) far exceeds that of (II)) and without the high cost involved in sepn. of catalyst (contrast prior-art processes). (I) and (II) are easily sepd. by fractional distn.

    103.
    发明专利
    未知

    公开(公告)号：DE58907409D1

    公开(公告)日：1994-05-11

    申请号：DE58907409

    申请日：1989-12-19

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  FISCHER ROLF DR ,  PRIESTER CLAUS-ULRICH DR

    IPC: C07D201/08

    Abstract: Caprolactam is prepared by heating a 6-aminocaproic ester in liquid phase in the presence of water to 230 DEG -350 DEG C. under superatmospheric pressure in a reaction medium comprising a liquid aromatic hydrocarbon having a boiling point of from 80 DEG to 240 DEG C. which is inert under reaction conditions, and isolating caprolactam from the reaction mixture.

    106.
    发明专利
    未知

    公开(公告)号：DE4228669A1

    公开(公告)日：1994-03-03

    申请号：DE4228669

    申请日：1992-08-28

    Applicant: BASF AG

    Inventor： BORCHERS DIRK DR ,  FISCHER ROLF DR ,  GOETZ NORBERT DR ,  KUEKENHOEHNER THOMAS DR ,  SCHNURR WERNER DR

    IPC: B01J21/04 ,  C07B61/00 ,  C07D309/08 ,  C07D307/32

    Abstract: Tetrahydropyran-4-carboxylic acid and its esters of the general formula I in which R denotes hydrogen, C1- to C6-alkyl, C5- to C8-cycloalkyl or aryl, are prepared by reacting dihydro-2(3H)furanones of the general formula II in which R denotes hydrogen, C1- to C6-alkyl or -CO-R and R denotes hydrogen or C1- to C6-alkyl with water or alcohols of the general formula III R -OH (III> in which R has the abovementioned meaning, at temperatures from 200 to 350 DEG C in the presence of acidic heterogeneous catalysts, by employing fixed-bed acidic heterogeneous catalysts.

    108.
    发明专利
    未知

    公开(公告)号：ES2043636T3

    公开(公告)日：1994-01-01

    申请号：ES87118201

    申请日：1987-12-09

    Applicant: BASF AG

    Inventor： DOCKNER TONI DR ,  SAUERWALD MANFRED ,  FISCHER ROLF DR ,  HUTMACHER HANS-MARTIN DR ,  PRIESTER CLAUS-ULRICH DR ,  VAGT UWE DR

    IPC: C07D201/08 ,  C07D201/16

    Abstract: In an improved process for preparing caprolactam by heating 6-aminocaproic acid, an ester or amide or mixture thereof in the presence of an inert reaction medium which is liquid under the reaction conditions and has a boiling point above that of caprolactam, the improvement comprises using as the reaction medium a hydrocarbon, maintaining a temperature of from 150 DEG to 350 DEG C., charging the 6-aminocaproic acid, ester, amide or mixture thereof at a rate commensurate with their rate of conversion, and separating caprolactam from the reaction mixture at a rate commensurate with its rate of formation.

    109.
    发明专利
    未知

    公开(公告)号：DE3883303D1

    公开(公告)日：1993-09-23

    申请号：DE3883303

    申请日：1988-06-08

    Applicant: BASF AG

    Inventor： BERTLEFF WERNER DR ,  FISCHER ROLF DR ,  KUMMER RUDOLF DR ,  MERGER FRANZ DR ,  SCHNEIDER HEINZ-WALTER DR

    IPC: C07B61/00 ,  C07C67/313 ,  C07C67/333 ,  C07C67/38 ,  C07C69/533 ,  C07C69/66 ,  C07C69/67 ,  C07C69/716

    Abstract: Prodn. of 5-formylvalerate esters (I) is carried out by : (a) hydroformylation of pentenate esters (II) with CO and H2 at elevated temp. and pressure in the presence of carbonyl complexes (III) of gp. VIII metals, to give a mixt. (IV) of 5-, 4- and 3-formylvalerate esters; (b) sepn. of (I) from (IV), leaving a mixt. (V) of 4- and 3-formylvalerate esters; (c) catalytic cracking of (V) at 50-400 deg. C, to give (II), which (d) are recirculated to stage (a). In stage (a), the Co concn. is pref. 0.05-0.3 mole-% w.r.t. (II), the (II) conversion is 10-50% and the temp. 60-160 deg. C. In stage (c), the catalyst pref. contains gp. VIII metal(s) and pref. is a supported catalyst contg. at least 2 gp. VIII noble metals or at least one gp. VIII noble metal plus Fe, Co and/or Ni. Pref. it may also contain Cu, Ag, Zn, Ti, V, Cr, Mo, W, Mn and/or Re. Cracking is carried out at 60-350 deg. C in (gas contg.) O2, pref. with a (V):O2 molar ratio of 1:0.05-3 and opt. in a diluent, esp. water and/or 1-6C alkanol(s).

    110.
    发明专利
    未知

    公开(公告)号：DE4205471A1

    公开(公告)日：1993-08-26

    申请号：DE4205471

    申请日：1992-02-22

    Applicant: BASF AG

    Inventor： GOSCH HANS-JUERGEN DR ,  RUST HARALD ,  FISCHER ROLF DR ,  HECHLER CLAUS DR ,  PINKOS ROLF DR

    IPC: C07C29/80 ,  C07C29/82 ,  C07C31/20

    Abstract: A process for isolating 1,4-butanediol from mixtures obtained by catalytic hydrogenation of maleic acid esters, fumaric acid esters and/or succinic acid esters, which in addition to 1,4-butanediol contain tetrahydrofuran, water, C1-C4-alcohols, succinic acid diesters, hydroxybutyric acid esters, succinic acid alkyl hydroxyalkyl esters, gamma-butyrolactone and butyric acid esters.

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