2.
    发明专利
    未知

    公开(公告)号:DE4116830A1

    公开(公告)日:1992-11-26

    申请号:DE4116830

    申请日:1991-05-23

    Applicant: BASF AG

    Abstract: Process for the preparation of N,N-disubstituted m-aminophenols, starting from resorcinol, which is converted by reaction with primary amines in a 1st step into N-monosubstituted m-aminophenols, which are converted by treatment with alkylating agents in a 2nd step without intermediate isolation into N,N-disubstituted m-aminophenols.

    New 1,4,5,8-tetra:amino anthraquinone dyestuff cpds. - are used in liquid crystal polymer prodn.

    公开(公告)号:DE4018229A1

    公开(公告)日:1991-12-12

    申请号:DE4018229

    申请日:1990-06-07

    Applicant: BASF AG

    Abstract: New 1,4,5,8-tetraamino-anthraquinone dyestuffs are of formula (I). R1-2 independently= CN or together = a gp. of formula (II). n= 0 or 1; X1-2 independently = H, 1-4C alkyl or halogen; X3 = H or 1-26C alkyl, opt. with ether O atom(s) in the chain and opt. substd. by CN, halogen, OH, NH2, vinyl, 1-6C alkanoyloxy or 3-4C (halo)alkenoyloxy. More specifically, R1R2 = a (II) gp. with X1-2= H; X3= H or 1-13C alkyl, opt. with 1-6 ether O atom(s) in the chain and opt. with substits. as above; esp. n = O and X3= H or 1-13C alkyl, opt. substd. by vinyl or 3-4C (halo)alkenoyloxy; or n= 1 and X3= H or 1-13C alkyl, opt. with 1-6 ether O atom(s) in the chain and opt. substd. by vinyl or 3-4C (halo)alkenoyloxy. (I) can be prepd. by reacting the bis-difluoroboron complex (III) of 1,4,5,8-tetraaminoanthraquinone with alkali cyanides to 1,4,5,8-tetraamino -2,3-dicyanoanthraquinone (IA) (e.g. by the method described in EP 239538). Treatment with H2SO4 converts the dicyano cpd. to the dicarbimide, which is converted to derivs. by reaction with halogen cpds., Hal-X4 (X4= as X3 except H) or substd. anilines.

    8.
    发明专利
    未知

    公开(公告)号:DE59201440D1

    公开(公告)日:1995-03-30

    申请号:DE59201440

    申请日:1992-04-25

    Applicant: BASF AG

    Abstract: Process for the preparation of N,N-disubstituted m-aminophenols, starting from resorcinol, which is converted by reaction with primary amines in a 1st step into N-monosubstituted m-aminophenols, which are converted by treatment with alkylating agents in a 2nd step without intermediate isolation into N,N-disubstituted m-aminophenols.

    10.
    发明专利
    未知

    公开(公告)号:DE3880917D1

    公开(公告)日:1993-06-17

    申请号:DE3880917

    申请日:1988-08-02

    Applicant: BASF AG

    Abstract: New bis-styryl cpds. of formula (I) where R1 is (substd.) phenoxysulphonyl, 1-13C alkylsulphonyl (opt. substd. by OH or 1-4C alkanoyloxy and opt. with O in the chain), 1-8C mono- or di-alkylsulphamoyl (opt. with O in the alkyl chain) or (substd.) phenylsulphonyl, R2, R3 are H, F, Cl, 1-4C alkyl or alkoxy or (substd.) phenoxy, R4 is F, Cl, CN, carbamoyl, 1-8C mono- or di-alkylcarbamoyl (opt. with O in the alkyl chain), pyrrolidino, piperidino, morpholino or piperazino-carbonyl, N-(1-4C alkyl) piperazinocarbonyl, 1-8C alkoxycarbonyl (opt. with O in the alkyl chain) or (substd.) phenoxy-carbonyl, m, n, p, q are 1 or 2.

Patent Agency Ranking