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    • 2. 发明申请
    • Process for the preparation of bis-benzazolyl compounds
    • 制备双 - 苯并唑基化合物的方法
    • US20070249840A1
    • 2007-10-25
    • US11821009
    • 2007-06-21
    • Victor EliuJulia Hauser
    • Victor EliuJulia Hauser
    • C07D263/64C07D403/10C07D417/10
    • C07D263/62C07D235/20C07D263/64C07D277/66C07D405/14C07D413/14
    • The present invention provides a process for the preparation of a compound of the formula wherein Y represents —O—, —S— or —N(R2)—, R2 being hydrogen, C1-C10alkyl or aralkyl; Z represents a 2,5-furanyl, 2,5-thiophenyl, 4,4′-stilbenyl or a 1,2-ethylenyl residue and R1 represents hydrogen, halogen, C1-C10alkyl, C1-C10alkoxyl, cyano, COOM or SO3M, M being hydrogen or an alkaline or alkaline earth metal, characterized by reacting a compound of the formula with a dicarboxylic acid of the formula HOOC-Z-COOH   (3) or an ester thereof, Y, Z and R1 being as previously defined, in N-methylpyrrolidone or N,N-dimethylacetamide, in the presence of an acidic catalyst and, optionally, in the presence of a secondary solvent capable of removing water from the reaction mixture, which are useful as optical whitening agents for natural and synthetic materials.
    • 本发明提供了制备下式化合物的方法,其中Y表示-O - , - S-或-N(R 2) - ,R 2' 是氢,C 1 -C 10烷基或芳烷基; Z表示2,5-呋喃基,2,5-噻吩基,4,4'-茋基或1,2-亚乙烯基,R 1表示氢,卤素,C 1, C 1 -C 10烷基,C 1 -C 10烷氧基,氰基,COOM或SO 3 M M是氢或碱土金属或碱土金属,其特征在于使下式的化合物与式(Ⅳ)的二羧酸反应式描述=“In-line formula”end =“lead”→> HOOC -Z-COOH(3)<?in-line-formula description =“In-line Formulas”end =“tail”?>或其酯,Y,Z和R 1如前所述 在N-甲基吡咯烷酮或N,N-二甲基乙酰胺中,在酸性催化剂的存在下,任选地,在能够从反应混合物中除去水的第二溶剂存在下,其可用作天然的光学增白剂和 合成材料。
    • 7. 发明授权
    • New bis-naphthoxazolyl-derivatives
    • 新的双 - 苯甲酰基衍生物
    • US3682946A
    • 1972-08-08
    • US3682946D
    • 1970-03-02
    • CIBA GEIGY
    • LIECHTI PETER
    • C07D263/62C07D263/64C07D85/48
    • C07D263/64
    • WHEREIN U denotes a diphenyl radical bonded in the 4,4''-position to the oxazole rings and U1 and U2 denote naphthalene radicals fused to the oxazole rings, and wherein up to four positions capable of substitution in U; U1 and U2 can be substituted with optionally substituted alkyl groups, halogen or optionally functionally modified sulphonic acid groups and up to 2 positions capable of substitution can be substituted with optionally substituted phenyl groups, phenylalkyl groups, -SO2-phenyl, nitrile or optionally functionally modified carboxyl groups. The naphthoxazole compounds are useful as optical brightening agents.

      The present invention relates to new azole derivatives of the naphthoxazole type which in the most general case correspond to the formula
    • 本发明涉及萘恶唑型的新的唑类衍生物,其在一般情况下对应于式WHEREIN U表示在4,4'-位上与恶唑环键合的二苯基,U1和U2表示与 恶唑环,并且其中至多四个能够在U中取代的位置; U1和U2可以被任选取代的烷基,卤素或任选的功能修饰的磺酸基团取代,并且多达2个能够取代的位置可以被任选取代的苯基,苯基烷基,-SO 2 - 苯基,腈或任选的官能改性 羧基。 萘恶唑化合物可用作荧光增白剂。