88590-00-5Relevant articles and documents
Convenient One-Pot Synthesis of 9 H -Carbazoles by Microwave Irradiation Employing a Green Palladium-Based Nanocatalyst
Steingruber, H. Sebastián,Mendioroz, Pamela,Volpe, María A.,Gerbino, Darío C.
, p. 4048 - 4058 (2021/08/03)
An efficient palladium-catalyzed tandem reaction for the one-pot synthesis of 9 H -carbazoles under microwave irradiation is developed. This approach involves a sequential Buchwald-Hartwig amination and a direct arylation from affordable and inexpensive anilines and 1,2-dihaloarenes. For the development of this purpose, a novel and magnetically recoverable palladium nanocatalyst supported on a green biochar under ligand-free conditions is used. Compared to other existing palladium-based protocols, the present synthetic methodology shows a drastic reduction in reaction times and excellent compatibility with different functional groups allowing to obtain a small library of 9 H -carbazoles in high yields and with good regioselectivity. This procedure represents the first example in the direct synthesis of carbazoles using a heterogeneous palladium nanocatalyst from commercial precursors. To examine the application of this protocol, a direct and scalable synthesis of the bioactive carbazole alkaloid clausenalene from commercially available starting materials is described.
Preparation method of carbazole ring-containing compound
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Paragraph 0071-0074, (2020/05/02)
The invention provides a preparation method of a carbazole ring-containing compound, comprising the following step: a compound shown as a formula I-1 is subjected to a reaction in an organic solvent in the presence of metal and/or metal salt by using triphenylphosphine as a reducing agent to generate a compound shown as the formula I. In the invention, the carbazole ring compound is prepared by taking triphenylphosphine as a reducing agent and utilizing a nitro compound to react under the cooperation of the co-reducing agent, so that the dosage of triphenylphosphine is reduced, the generationamount of dangerous solid wastes is reduced, the post-treatment is easy, and the reaction temperature can be greatly reduced and the reaction time can be greatly shortened while high product yield isensured.
ORGANIC OPTOELECTRONIC DEVICE AND DISPLAY DEVICE
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Paragraph 0298-0300, (2020/05/29)
An organic optoelectronic device and a display device including the organic optoelectronic device, the organic optoelectronic device including an anode and a cathode facing each other, a light emitting layer between the anode and the cathode, a hole transport layer between the anode and the light emitting layer, and a hole transport auxiliary layer between the light emitting layer and the hole transport layer, wherein the light emitting layer includes a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, and the hole transport auxiliary layer includes a third compound represented by Chemical Formula 3,