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    Stilbene compounds
    1.
    发明授权
    Stilbene compounds 失效

    公开(公告)号：US4113938A

    公开(公告)日：1978-09-12

    申请号：US851040

    申请日：1977-11-14

    申请人： Adolf Emil Siegrist ,  Bernardo DE Sousa

    发明人： Adolf Emil Siegrist ,  Bernardo DE Sousa

    IPC分类号： C09B57/00 ,  C07D261/20 ,  C09B23/00

    CPC分类号： C07D261/20

    摘要： Novel stilbene compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen or chlorine and A is a mono-nuclear or poly-nuclear aromatic heterocyclic structure which contains oxygen atoms or oxygen and nitrogen atoms and is unsubstituted or substituted by non-chromophoric substituents, as well as their use in a process for optically brightening organic material are disclosed.

    Stilbene compounds
    6.
    发明授权
    Stilbene compounds 失效
    STILBENE化合物

    公开(公告)号：US4113937A

    公开(公告)日：1978-09-12

    申请号：US850861

    申请日：1977-11-14

    申请人： Adolf Emil Siegrist ,  Jean-Paul Pauchard

    发明人： Adolf Emil Siegrist ,  Jean-Paul Pauchard

    IPC分类号： C09B57/00 ,  C07D471/04 ,  C09B23/00

    CPC分类号： C07D471/04

    摘要： Novel stilbene compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen or chlorine and A is a mono-nuclear or poly-nuclear aromatic heterocyclic structure which contains oxygen atoms or oxygen and nitrogen atoms and is unsubstituted or substituted by non-chromophoric substituents, as well as their use in a process for optically brightening organic material are disclosed.

    Aromatic compounds containing ethylene double bonds, processes for their manufacture and use
    8.
    发明授权
    Aromatic compounds containing ethylene double bonds, processes for their manufacture and use 失效
    含有乙烯双键的芳族化合物，其制造和使用的方法

    公开(公告)号：US3991049A

    公开(公告)日：1976-11-09

    申请号：US506663

    申请日：1974-09-16

    申请人： Adolf Emil Siegrist ,  Peter Liechti ,  Hans Rudolf Meyer ,  Kurt Weber

    发明人： Adolf Emil Siegrist ,  Peter Liechti ,  Hans Rudolf Meyer ,  Kurt Weber

    IPC分类号： C07C2/86 ,  C07C17/26 ,  C07C41/30 ,  C07C43/215 ,  C07C63/66 ,  C07D213/06 ,  C07D213/16 ,  C07D213/30 ,  C07D317/50 ,  C07D317/54 ,  C07D333/08 ,  C07D333/16 ,  C08K5/00 ,  C09B23/14 ,  C07C25/18

    CPC分类号： C07D213/16 ,  C07C17/263 ,  C07C2/86 ,  C07C41/30 ,  C07C63/66 ,  C07D213/06 ,  C07D213/30 ,  C07D317/50 ,  C07D317/54 ,  C07D333/08 ,  C07D333/16 ,  C08K5/0041 ,  C09B23/141 ,  C09B23/148 ,  C07C2103/24 ,  C07C2103/26 ,  C07C2103/50

    摘要： The invention provides a new process for the manufacture of aromatic compounds which at least once contain a benzene ring of an aromatic carbocyclic ring system bonded by an ethylene double bond in conjugation with a further aromatic ring system, i.e. contain the stilbene skeleton or stilbene analogon as central structural element, as well as certain classes of new compounds of this type. The process is characterized by the reaction of a Schiff base of an aromatic aldehyde with an aromatic carbocyclic six-membered ring compound which contains one to four methyl groups bonded to ring carbon atoms of a benzene ring, which furthermore contains aromatic rings which are exclusively six-membered carbocyclic rings, and wherein those benzene rings whose methyl groups are to be caused to react are free of other substituents which contain atoms which are replaceable by alkali metal. The reaction is carried out in the presence of (a) a strongly basic alkali compound and (b) an N-dialkyl-acylamide as solvent. The compounds obtainable according to this process show a marked fluorescence emission and therefore are suitable for all purposes where fluorescence properties are used, as for instance optical brighteners, scintillators fluorescence dyes, etc.

    摘要翻译： 本发明提供了一种制备芳族化合物的新方法，所述芳族化合物至少一次含有通过乙烯双键与另外的芳族环系统共轭的芳族碳环系统的苯环，即含有二苯乙烯骨架或1,2-二苯乙烯类似物作为 中心结构元素，以及某些类型的这类新化合物。 该方法的特征在于芳族醛的席夫碱与芳族碳环六元环化合物的反应，所述芳族碳环六元环化合物含有与苯环的环碳原子键合的一至四个甲基，其还包含仅六个芳环的芳环 并且其中要使甲基反应的那些苯环不含有可被碱金属替代的原子的其它取代基。 反应在（a）强碱性碱性化合物和（b）N-二烷基 - 酰基酰胺作为溶剂的存在下进行。 根据该方法可获得的化合物显示出显着的荧光发射，因此适用于所有使用荧光性质的目的，例如荧光增白剂，闪烁体荧光染料等。