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    2.
    发明专利
    未知

    公开(公告)号：DE2939916A1

    公开(公告)日：1981-04-23

    申请号：DE2939916

    申请日：1979-10-02

    Applicant: HOECHST AG

    Inventor： SCHOENBERGER NORBERT DR RER NA ,  SCHINZEL ERICH DR PHIL ,  MARTINI THOMAS DR RER NAT ,  ROESCH GUENTHER

    IPC: C09B57/00 ,  C07D235/02 ,  C07D235/20 ,  C07D235/24 ,  C07D487/14 ,  D06L3/12

    Abstract: Compounds of the general formula (1) (1) wherein R1 denotes hydrogen, halogen, alkyl, alkoxy or, conjointly with R2, a fused benzo ring, R2 denotes hydrogen, alkyl, alkoxy, halogen, phenyl, cyano, carboalkoxy, carboxyl, carbonamido, monoalkylcarbonamido, dialkylcarbonamido, sulfo, alkylsulfonyl, alkyloxysulfonyl, sulfonamido, monoalkylsulfonamido or dialkylsulfonamido or, conjointly with R3, a fused benzo ring, R3 has the same meaning as R2, R4 denotes hydrogen, alkyl, alkoxy, halogen or, conjointly with R3, a fused benzo ring, R5 denotes alkyl, hydroxyalkyl, alkoxyalkyl, optionally substituted aralkyl, cyanoethyl, cycloalkyl or a group of the formulae -CH2CN, -CH2CONH2 or -CH2COO-alkyl, A denotes a group of the formulae or -(CH2)4- R6 denotes hydrogen, alkyl, hydroxyalkyl, alkoxyalkyl, aralkyl or optionally substituted phenyl, n denotes 1, 2 or 3 and X(-) denotes a halide, alkylsulfonate, alkylsulfate, alkylphenylsulfonate or phenylsulfonate ion, and processes for their preparation and their use as optical brighteners.

    5.
    发明专利
    未知

    公开(公告)号：DE2820322A1

    公开(公告)日：1979-11-15

    申请号：DE2820322

    申请日：1978-05-10

    Applicant: HOECHST AG

    Inventor： ERCKEL RUEDIGER DR ,  ROESCH GUENTHER

    IPC: C07D213/78 ,  C07D413/14 ,  C07D417/14 ,  D06L3/12

    Abstract: Compounds of the formula (I) wherein X is O or S, R1 and R2 each are hydrogen, fluorine, chlorine, phenyl, alkyl, alkoxy, dialkylamino, trialkylammonium, acylamino or optionally functionally modified carboxy or sulfo groups, two adjacent radicals R1 and R2 optionally forming together a phenylene, a lower alkylene or a 1,3-dioxapropylene group; and A is a group of the formulae in which R3 is an alpha-, beta- or gamma-pyridyl, pyridyl-methylene, thiophenyl, furanyl, benzofuranyl, pyrazinyl, pyrimidinyl or pyridazinyl group. These compounds, which are suitable as optical brighteners, are prepared by reaction of a compound of the formula with a compound of the formula R3-Z wherein Y is a group and Z is -COCl or vice versa.

    7.
    发明专利
    未知

    公开(公告)号：DE2750947A1

    公开(公告)日：1979-05-17

    申请号：DE2750947

    申请日：1977-11-15

    Applicant: HOECHST AG

    Inventor： PINTSCHOVIUS ULRICH DR ,  SCHNIZEL ERICH DR ,  ROESCH GUENTHER

    IPC: C09B57/00 ,  C07D235/20 ,  C07D263/56 ,  C07D263/62 ,  C07D263/64 ,  C11D3/42 ,  D06L3/12 ,  C07D233/24

    Abstract: Compounds of the general formula I in which X represents a trifluoromethyl group or a fluorine atom, n is 1 or 2, Z is an oxygen atom or a NR grouping, in which R is hydrogen or an optionally substituted alkyl group, the benzo rings optionally containing further nonchromophoric substituents. These compounds may be prepared by reacting the dichloride of 1,4-naphthalene-dicarboxylic acid with 2 mols of an o-aminophenol or of an o-nitroaniline and by subsequently cyclizing the acylamino compound obtained. The products are suitable as optical brighteners.

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