72.
    发明专利
    未知

    公开(公告)号:DE3700808A1

    公开(公告)日:1988-07-28

    申请号:DE3700808

    申请日:1987-01-14

    Applicant: BASF AG

    Abstract: Polyaryl ether ketones are prepared by reacting aromatic dihydroxy compounds with aromatic dihalogen compounds in polar aprotic solvents in the presence of alkali metal carbonates, in particular by reacting aromatic dihydroxy compounds I (I) or ring-substituted C1-C8-alkyl, C1-C8-alkoxy, aryl, chlorine or fluorine derivatives thereof, n and m each being 0 or 1, with aromatic dihalogen compounds (II) or ring-substituted C1-C8-alkyl, C1-C8-alkoxy, aryl, chlorine or fluorine derivatives thereof, r and s each being 0 or 1, A being oxygen or a chemical bond and X being chlorine or fluorine.

    73.
    发明专利
    未知

    公开(公告)号:ES2151216T3

    公开(公告)日:2000-12-16

    申请号:ES97117797

    申请日:1997-10-14

    Applicant: BASF AG

    Abstract: Preparation of N-hydroxyalkyl -substituted amino-alkynol derivatives of formula (I) involves reaction of an alkyne of formula R1-C IDENTICAL CH (II) with a 1-oxa-3-aza-heterocycloalkane of formula (III) over a heterogeneous catalyst comprising a compound of a first or second transition group metal. R1= H, alkyl, haloalkyl, cycloalkyl, aryl, alkoxy, alkoxyalkyl, hydroxyalkyl or -CR2R3-N(R4)-A-OH; R2-R4 = H, alkyl, haloalkyl, cycloalkyl, aryl, alkoxy, alkoxyalkyl or hydroxyalkyl; A = 2-5C alkylene (optionally substituted by one or more of alkyl, haloalkyl, aryl, alkoxy, hydroxy and hydroxyalkyl).

    74.
    发明专利
    未知

    公开(公告)号:DE59602064D1

    公开(公告)日:1999-07-08

    申请号:DE59602064

    申请日:1996-08-28

    Applicant: BASF AG

    Abstract: Prodn. of N-alkenylcarbamic acid esters of formula HR C=CR -N(R )-C(O)-O-R (I) is new, in which at least one of the R gps. = H and the other = H or 1-4C alkyl; R = aliphatic, cycloaliphatic, araliphatic or aromatic gp., opt. combined with R to form a 2- to 10-membered bridging gp.; and R = aliphatic, cycloaliphatic or aromatic gp. The process comprises reacting an alkenyl ester of formula HR C=CR -O-C(O)-R (II) (in which R = H or an aliphatic, cycloaliphatic or aromatic gp.) with a carbamate ester of formula HR N-C(O)-O-R (III) in presence of a base. Pref. in the formulae, R = H; R = 1-20C alkyl, or R + R = 2-7C alkylene.

    77.
    发明专利
    未知

    公开(公告)号:DE59503848D1

    公开(公告)日:1998-11-12

    申请号:DE59503848

    申请日:1995-11-21

    Applicant: BASF AG

    Abstract: Novel oxime ethers of formula (I) are claimed as are also (i) prepn. of (I) by reaction of an oxime ether alcohol of formula (II) with an alkyne of formula (III) in presence of a base; and (ii) use of (i) as a comonomer in the prodn. of polymeric coatings or adhesives. R and R = H, 1-20C alkyl, 4-10C cycloalkyl, or 6-10C aryl or together form a 3-14C bridge; R = H, 1-4C alkyl or phenyl opt. with an inert substit.; n = 1-100; and A = 2-10C alkylene opt. with an inert substit.

    80.
    发明专利
    未知

    公开(公告)号:DE59209291D1

    公开(公告)日:1998-05-28

    申请号:DE59209291

    申请日:1992-01-22

    Applicant: BASF AG

    Abstract: Pyrocatechol monoethers or pyrocatechols of the general formula Ia and Ib, respectively, (R and R = H or C1-C8-hydrocarbon radicals; R = C1-C8-hydrocarbon radical) are prepared by a) reacting a 2-hydroxycyclohexanone dialkyl ketal II in the gas phase in the presence of a platinum metal or of a compound of one of these metals as catalyst, so as to obtain the compounds Ia, and b) carrying out step a) in the presence of water so as to obtain the compounds Ib. The products can be used as intermediates for the synthesis of pharmaceutical products, odoriferous substances and flavourings.

Patent Agency Ranking