244-76-8Relevant articles and documents
Synthesis of 6-substituted pyrido[2,3-b]indoles by electrophilic substitution
Schneider, Cédric,Gueyrard, David,Popowycz, Florence,Joseph, Beno?t,Goekjian, Peter G.
, p. 2237 - 2241 (2007)
Regioselective electrophilic aromatic substitutions, acylation, bromination, and formylation, of unprotected pyrido[2,3-b]indole (α-carbolines) at the C-6 position are described. Alternative conditions for the nitration were investigated, which led to the unexpected appearance of the minor C-8 isomer. Georg Thieme Verlag Stuttgart.
Visible-light-driven Cadogan reaction
Qu, Zhonghua,Wang, Pu,Chen, Xing,Deng, Guo-Jun,Huang, Huawen
supporting information, p. 2582 - 2586 (2021/03/09)
Visible-light-driven photochemical Cadogan-type cyclization has been discovered. The organic D-A type photosensitizer 4CzIPN found to be an efficient mediator to transfer energy from photons to the transient intermediate that breaks the barriers of deoxygenation in Cadogan reaction and enables a mild metal-free access to carbazoles and related heterocycles. DFT calculation results indicate mildly endergonic formation of the intermediate complex of nitrobiarenes and PPh3, which corresponds with experimental findings regarding reaction temperature. The robust synthetic capacity of the photoredox Cadogan reaction systems has been demonstrated by the viable productivity of a broad range of carbazoles and related N-heterocycles with good tolerance of various functionalities.
Compound and application thereof in field of organic light emitting
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Paragraph 0052-0054, (2019/06/08)
The invention relates to a compound. The structure of the compound is shown in a following formula (the formula is shown in the description), wherein L1 and L2 are respectively independently selectedfrom single-bond, substituted or unsubstituted arylidene or fused ring sub-aromatic hydrocarbon group containing C6 to C60, and substituted or unsubstituted heteroarylidene or fused heterocyclic sub-aromatic hydrocarbon group containing one or multiple heteroatoms and C5 to C60; Ar1 and Ar2 are respectively independently selected from substituted or unsubstituted arylidene or fused ring aromatic hydrocarbon group containing C6 to C60, and substituted or unsubstituted heteroaryl, arylamine group, secondary amine group or fused heterocyclic aromatic hydrocarbon group containing one or multiple heteroatoms and C5 to C60; at least one of Ar1 and Ar2 is a electron-deficient group. The invention also provides an organic electroluminescence device adopting the novel compound shown in the formula.The organic electroluminescence device has the advantages that the drive voltage is low, and the light emitting efficiency is high.