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Upstream product

• 536-74-3 phenylacetylene 
• 188677-34-1 12-phenylchrysene-5,6-dione 
• 7647-01-0 hydrogenchloride 
• 857592-10-0 2-(2-[1]naphthyl-1-phenyl-vinyl)-aniline 
• 64-19-7 acetic acid 
• 90-11-9 1-Bromonaphthalene 
• 24892-82-8 1-bromo-2-(1-phenylpropen-1-yl)benzene 
• 188677-27-2 3-chloro-4-(2,2-diphenylethenyl)-1,2-naphthoquinone 
• 18099-99-5 3-chloro-1,2-naphthoquinone 
• 115293-30-6 3-hydroxy-2-[1]naphthyl-3,3-diphenyl-propionic acid 

Relevant academic research and scientific papers

A Convenient Synthesis of Phenanthrene and Chrysene Derivatives

Phenanthrenes and chrysenes are readily obtained by reaction of biphenyl-2-diazonium tetrafluoroborates or 2-phenylnaphthalene-1-diazonium tetrafluoroborates, respectively, with mono-substituted acetylenes in pyridine at 0 deg C.

Metal-Free Visible-Light-Mediated Aromatization of 1,2–Dihydronaphthalenes

A series of polyaromatic naphthalenes have been synthesized through the dehydrogenation of the corresponding 1,2-dihydroarylnaphthalenes by using 9-mesityl-10-methylacridinium perchlorate as a photocatalyst and diphenyliodonium triflate as an external oxidant under visible light irradiation. The reaction proceeds smoothly under metal-free conditions and tolerates some functionalities. Interestingly, the reaction is also amenable to the aromatization of tetrahydronaphthalenes and fair conversions were obtained. Preliminary mechanistic investigations have been conducted and a reasonable mechanism is proposed.

Preparation method of fused ring compound

The invention discloses a preparation method of a fused ring compound III. The preparation method comprises the following step: in a solvent and in the presence of palladium acetate, alkali and a ligand, carrying out a reaction shown in the specification on a compound I and a compound II to obtain a compound III. The preparation method disclosed by the invention is relatively good in compatibilitywith a substrate, various polycyclic aromatic hydrocarbon compounds can be simply obtained in a short period of time through convergent synthesis, and particularly, heteroatom-containing polycyclic aromatic hydrocarbon shows extremely excellent regioselectivity.

Sequential Cross-Coupling/Annulation of ortho-Vinyl Bromobenzenes with Aromatic Bromides for the Synthesis of Polycyclic Aromatic Compounds

A sequential cross-coupling/annulation of ortho-vinyl bromobenzenes with aromatic bromides was realized, providing a direct and modular approach to access polycyclic aromatic compounds. A vinyl-coordinated palladacycle was proposed as the key intermediate for this sequential process. Excellent chemoselectivity and regioselectivity were observed in this transformation. The practicability of this method is highlighted by its broad substrate scope, excellent functional group tolerance, and rich transformations associated with the obtained products.