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    Process for the manufacture of 6-nitro-9- amino-2-ethoxy-acridine
    1.
    发明授权
    Process for the manufacture of 6-nitro-9- amino-2-ethoxy-acridine 失效
    6-硝基-9-氨基-2-乙氧基 - 吡啶的制备方法

    公开(公告)号：US3678054A

    公开(公告)日：1972-07-18

    申请号：US3678054D

    申请日：1970-10-09

    Applicant: HOECHST AG

    Inventor： NEEB RUDOLF

    IPC: C07D219/10 ,  C07D37/24

    CPC classification number: C07D219/10

    Abstract: Process for the manufacture of 6-nitro-9-amino-2-ethoxyacridine, wherein 6-nitro-9-chloro-2-ethoxyacridine is reacted with urea in a polar organic solvent in the presence of salts of weak bases with strong acids and, if desired or required, in the presence of catalytic amounts of an aromatic mono- or polyhydroxy compound.

    Abstract translation: 制备6-硝基-9-氨基-2-乙氧基吖啶的方法，其中6-硝基-9-氯-2-乙氧基吖啶与极性有机溶剂中的脲在弱碱的盐存在下与强酸 酸，如果需要或需要，在催化量的芳族单或多羟基化合物的存在下。

    Basic oxazine dyestuffs and process for their preparation
    2.
    发明授权
    Basic oxazine dyestuffs and process for their preparation 失效
    基本恶嗪染料及其制备方法

    公开(公告)号：US3928339A

    公开(公告)日：1975-12-23

    申请号：US43527774

    申请日：1974-01-21

    Applicant: HOECHST AG

    Inventor： MUNDLOS EBERHARD ,  HERZ LUIS ,  NEEB RUDOLF ,  MOHR REINHARD ,  OSTERMEIER JOHANN

    IPC: C09B19/00

    CPC classification number: C09B19/00

    Abstract: Basic oxazine dyestuffs of the formula I

    in which R stands for a lower alkyl group which may be substituted, R1 and R2 each stands for a hydrogen atom or a lower alkyl group which may be substituted and which may form together with the nitrogen atom also a heterocyclic radical, R3 stands for a hydrogen atom or a lower alkyl group which may be substituted, R4 stands for a hydrogen atom, a lower alkyl group which may be substituted, an aryl group which may be substituted, or together with the nitrogen atom and R3 or the benzene nucleus R4 may form a heterocyclic radical, and X stands for an anion, and the benzene nucleus a may carry further non ionic substituents or a fused benzene nucleus. The novel dyestuffs are suitable for the dyeing or printing of tannined cellulose fibers, silk, leather or fully synthetic fibers, such as acetate rayon, polyamide fibers or acid-modified polyamide or polyester fibers, especially of fibers containing polyacrylonitrile or polyvinylidene cyanide. The dyeings produced on these fibers are mostly very bright and have a good tinctorial strength as well as, in general, good fastness properties to light and wet processing, for example good fastness to washing, fulling, cross-dyeing, carbonizing, to the action of chlorine and to perspiration.

    Abstract translation: 式I的基本恶嗪染料，其中R表示可被取代的低级烷基，R 1和R 2各自表示氢原子或可以被取代的，可以与氮原子一起形成的低级烷基也是 杂环基，R 3表示氢原子或可被取代的低级烷基，R 4表示氢原子，可被取代的低级烷基，可被取代的芳基，或与氮原子一起 R3或苯核R4可以形成杂环基，X'代表阴离子，苯核a可以携带更多的非离子取代基或稠合的苯核。

    5.
    发明专利
    未知

    公开(公告)号：MX169972B

    公开(公告)日：1993-08-03

    申请号：MX1455189

    申请日：1989-01-13

    Applicant: HOECHST AG

    Inventor： WYKPIEL NERNER ,  NEEB RUDOLF ,  PLESSEN HELMOLD VON ,  RITTNER SIEGBERT ,  VOLK HRINRICH

    IPC: C07C51/00 ,  C07C51/43 ,  C07C65/11 ,  C07C67/00 ,  C07C51/42

    Abstract: A method for the purification of 2-hydroxynaphthalene-6-carboxylic acid by recrystallisation. In this method, the crude acid is recrystallised from water-miscible linear or cyclic aliphatic ethers, aliphatic polyethers or aliphatic hydroxy ethers or from an at least 10% strength by weight aqueous solution of these ethers. Recrystallisation from a 35-90% strength by weight aqueous solution of 1,4-dioxane is particularly preferred.

    BASIC OXAZINE DYESTUFFS AND PROCESS FOR THEIR PREPARATION
    6.
    发明专利
    BASIC OXAZINE DYESTUFFS AND PROCESS FOR THEIR PREPARATION 未知

    公开(公告)号：CA955256A

    公开(公告)日：1974-09-24

    申请号：CA131396

    申请日：1971-12-30

    Applicant: HOECHST AG

    Inventor： MUNDLOS EBERHARD ,  HERZ LUIS ,  MOHR REINHARD ,  NEEB RUDOLF ,  OSTERMEIER JOHANN

    IPC: C09B19/00

    Abstract: 1339300 Basic oxazine dyestuffs FARBWERKE HOECHST AG 30 Dec 1971 [31 Dec 1970] 60721/71 Heading C4P Novel dyestuffs of the formula (wherein R is optionally substituted C 1-4 alkyl, R 1 and R 2 are each H or optionally substituted C 1-4 alkyl, or -NR 1 R 2 is a heterocyclic radical; R 3 is H or optionally substituted C 1-4 alkyl and R 4 is H or optionally substituted alkyl or aryl, or R 4 forms, together with the nitrogen atom and R 3 or the adjacent benzene nucleus and optionally via a further hetero atom, a heterocyclic radical; X (-) is an anion; and the benzene nucleus "a" may carry further non-ionic substituents or a fused-on benzene ring) are prepared by condensing (i) a 2-nitroso-5-NR 3 R 4 - phenol with a 2-NR 1 R 2 -hydroquinone di-(optionally substituted-alkyl) ether; or (ii) a 3-NR 3 R 4 -phenol with a 2-nitroso-5-NR 1 R 2 - hydroquinone di-(optionally substituted-alkyl) ether, both condensations being effected using salts of the starting materials which provide the anion X (-) and/or in the presence of a strong acid supplying the anion X (-) and, if desired, converting this anion in the product into another anion or replacing it by another anion. Also, products wherein R, R 1 , R 2 and X (-) are as defined above, R 3 is H or optionally substituted C 1-4 alkyl and R 4 is H or optionally substituted alkyl or aryl, but R 3 and R 4 cannot both be H, and ring a carries a fused-on benzene nucleus, are prepared by condensing a 2-nitroso-5- NR 1 R 2 -hydroquinone di-(optionally substitutedalkyl) ether with 2-hydroxynaphthalene in an acid medium supplying X (-) and then treating the resulting benz[a]phenoxazine with a primary or secondary amine NHR 3 R 4 . The dyestuffs are used for dyeing or printing tannined cellulose, silk, leather, acetate rayon, polyamide, acid-modified polyamide, polyester, polyacrylonitrile or polyvinylidene cyanide in shades varying from greenish blue through blue to reddish blue.

    8.
    发明专利
    未知

    公开(公告)号：IT7925681D0

    公开(公告)日：1979-09-12

    申请号：IT2568179

    申请日：1979-09-12

    Applicant: HOECHST AG ,  GERMANIA

    Inventor： NEEB RUDOLF ,  HOHMANN KURT ,  MOHR REINHARD

    IPC: C09B29/00 ,  C09B29/08 ,  C09B44/00 ,  C09B44/20 ,  C09B

    Abstract: Chlorozincate salts of thiazolium azo compounds are prepared by reacting thiazolium azo compounds with an dialkylsulfate having from 1 to 4 carbon atoms in the alkyl radicals, which process comprises carrying out the reaction in an aqueous medium at a temperature of from about 10 DEG to 50 DEG C. in the presence of a zinc compound capable of binding acid, and with the use of from 1.8 to 2.5 mols of the dialkylsulfate, calculated on the starting azo dyestuff, at a pH not exceeding 8, preferably at 3-7. The prepared thiazolium azo compound is precipitated as chlorozincate salt, especially by means of an alkali metal chloride. According to this process, the chlorozincate salts are obtained in higher purity. A perceptible decomposition of the thiazolium azo compound does not occur. Chemicals, for example the alkylation agent and acid-binding agents need be used in a small quantity. In addition to this economy and to the less pollution of the waste water, the process has the advantage that it can be carried out with the use of a small reaction volume.

    9.
    发明专利
    未知

    公开(公告)号：BR9505216A

    公开(公告)日：1997-09-16

    申请号：BR9505216

    申请日：1995-11-17

    Applicant: HOECHST AG

    Inventor： MEIER MICHAEL ,  VOLK HEINRICH ,  NEEB RUDOLF

    IPC: C07D235/26 ,  C09B29/20

    Abstract: Prepn. of 3-hydroxy-N-benzimidazolon-5-yl-naphth-2-amide (I) comprises reacting 5-aminobenzimidazolone (II) and Na2CO3 in N-methylpyrrolidone with a soln. of 3-hydroxy-2-naphthoyl chloride (III) in xylene or toluene; filtration; washing with xylene or toluene; treating the filter cake with water treated with Na2CO3 and steam distn.; filtering the residue by suction, washing and drying.

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