52107-69-4Relevant articles and documents
DICYANSTYRYL BENZENE DERIVATIVES AND FLUORESCENT MATERIAL COMPRISING THE SAME
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Paragraph 0188-0192, (2019/06/13)
The present invention refers to die [...] benzene derivatives represented by formula 1 are disclosed. The, head of the present invention die [...] benzene to yield fluorescent derivatives (Dicyanstyryl benzene) to minimize environmental pollution by reducing the drain diameter number fluorescent material can be [...] number can be improve. [Formula 1] (by machine translation)
Palladium-catalyzed highly selective ortho-halogenation (I, Br, Cl) of arylnitriles via sp2 C-H bond activation using cyano as directing group
Du, Bingnan,Jiang, Xiaoqing,Sun, Peipei
, p. 2786 - 2791 (2013/04/24)
A palladium-catalyzed ortho-halogenation (I, Br, Cl) of arylnitrile is described. The optimal reaction conditions were identified after examining various factors such as catalyst, additive, solvent, and reaction temperature. Using cyano as the directing group, the halogenation reaction gave good to excellent yields. The method is compatible to the arylnitriles with either electron-withdrawing or electron-donating groups. The reaction is available to the substrate in at least gram scale. The present method was successfully applied to the synthesis of the precursors of paucifloral F and isopaucifloral F.
