1334402-95-7Relevant academic research and scientific papers
Dibenzo [c, i] [1,10] O-phenanthroline and its derivatives and preparation method
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Paragraph 0064-0066, (2017/01/26)
The invention discloses a dibenzo[c, i][1, 10]o-phenanthroline, its derivative and preparation method. The compound is characterized in that: two phenanthridines share a benzene ring, and the ortho-position of the nitrogen atom is equipped with a substituent group, which can be hydrogen, alkyl, phenyl or aryl. The preparation method includes: taking 4, 7-dibromobenzo[2, 1, 3]thiadiazole and 2-formyl phenylboronic acid or 2-acetyl(or arylformyl)phenylboronic acid pinacol ester as raw materials, carrying out Suzuki coupling reaction to obtain a series of 4, 7-di[2-formyl, 2-alkylformyl or arylformyl]benzo[2, 1, 3]thiadiazole, and finally carrying out reduction by sodium borohydride/cobalt chloride hexahydrate or lithium aluminum hydride and cyclization so as to obtain a series of dibenzo[c, i][1, 10]o-phenanthroline and its derivatives. The series of organic compounds provided by the invention broadens the scope of organic electroluminescent materials, and the preparation method provides a simple and convenient way for synthesis of phenanthroline series compounds. (formula).
Practical radical cyclizations with arylboronic acids and trifluoroborates
Lockner, Jonathan W.,Dixon, Darryl D.,Risgaard, Rune,Baran, Phil S.
supporting information; experimental part, p. 5628 - 5631 (2011/12/03)
Practical radical cyclizations using organoboronic acids and trifluoroborates take place in water, open to air, and in a scalable fashion employing catalytic silver nitrate and stoichiometric potassium persulfate. Both Pschorr-type cyclizations and tandem radical cyclization/trap cascades are described, illustrating the utility of these mild conditions for the generation of polycyclic scaffolds.
