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• 151509-90-9 5-phenyl-5,10-dihydrobenzo[b]fluoren-11-one 

Relevant academic research and scientific papers

Base-controlled 1,6-enyne-bicyclization: divergent synthesis of benzo[b]fluorenones and benzo[b]fluorenols

An interesting base-controlled protocol for the divergent and atom-economic synthesis of benzo[b]fluorenones and benzo[b]fluorenols with the great diversity in substitution patterns has been developed. Started from readily available 1,6-enynes, good to ex

Facile and Diverse Synthesis of Benzo[b]fluorenone Derivatives through a Copper/Selectfluor-Catalyzed Tandem Annulation of 1,6-Enynes

A facile synthesis of a diverse array of benzo[b]fluorenone derivatives has been developed. The method involves a Cu0/Selectfluor-catalyzed tandem annulation of 1,6-enynes, which takes place under mild reaction conditions. For tert-butylethynyl

Single Cu(I)-Photosensitizer Enabling Combination of Energy-Transfer and Photoredox Catalysis for the Synthesis of Benzo[ b]fluorenols from 1,6-Enynes

An efficient, mild, and atom-economical synthesis of benzo[b]fluorenols from 1,6-enynes has been developed under photocatalytic conditions. A single P/N heteroleptic Cu(I)-photosensitizer might exhibit both energy-transfer and photoredox catalytic activities in the formation of benzo[b]fluorenols.

Method for synthesizing benzofluorenone compound through photocatalysis

The method is, after: reaction (I) of the compound, shown (II) in the formula, is synthesized, at, blue 15W light, and the reaction liquid is subjected to the following treatment LED to obtain the benzo-fluorenone compound, shown in the formula 30-50 °C through a post-treatment process after the 1-3h, reaction . The reaction, liquid is subjected; to the following treatment to obtain the benzo,fluorenone (III) shown; in the general; through a photocatalysis manner after the reaction solution, is subjected to, a photocatalytic mode after the reaction; is carried out in a photocatalysis manner.

Cu-catalyzed synthesis method of benzofluorenone compound (by machine translation)

The method for Cu-catalyzed synthesis of the benzofluorenone compound, is: The method (I) of compound, shown (II) in formula, has a relatively high atom economy, and adopts a non-toxic ethanol as a solvent, to be more green and environment-friendly 70-90 °C; at the same time, 1-3h, reaction conditions are raised; to, reaction, conditions. (III). The reaction solution is subjected to a radical ring addition reaction, to, obtain benzofluorenone. shown, as a compound. (by machine translation)

Method for synthesizing benzofluorenone compound

To the method, after the compound: represented by Formula (I), is subjected to (II) reaction, reaction solution, of Formula, is subjected to post-treatment 70-90 °C to raise oxidation aromatization 1-3h, reaction conditions . The method comprises the following processes: (III). The reaction solution is subjected to post-treatment to obtain compound; shown in the formula shown in claim, under, reaction conditions with low; substrate adaptability and good selectivity, for synthesis of, benzofluorenone; by free radical ring addition .

The invention relates to a copper as catalyst benzo fluorenone and synthetic method of derivative thereof

The invention relates to an organic compound synthetic method and provides a method for synthesis of benzfluorenone and its derivative by copper as a catalyst. The method solves the problem that the existing benzfluorenone and its derivative synthesis met

Base-Catalyzed Cyclization of 1,6-Diynyl Carboxylates Involving Propargyl-Allenyl Isomerization: Efficient Synthesis of Benzo[b]fluorene and Its Analogues

An efficient protocol for the synthesis of benzo[b]fluorenes via base-catalyzed cyclization of 1,6-diynyl carbonates, esters or ethers has been developed. The reaction likely proceeds via base-induced propargyl-allenyl isomerization followed by Schmittel-type cyclization. Heterocycle-fused fluorenes such as thiophene- or pyridine-fused substrates could also be conveniently constructed by this method. The synthetic utility of this reaction was demonstrated by the preparation of up to seven-ring fused polycyclic aromatic hydrocarbons. (Figure presented.).

Fused benzo[b]fluorenols: Palladium-catalyzed intramolecular dehydroaromatization and carbonyl reduction

Benzo[b]fluorenols were prepared by a new palladium-catalyzed one-pot reaction of en-one-ynes with 3-bromoprop-1-yne through intramolecular dehydroaromatization and carbonyl reduction. Copyright

Intramolecular [4 + 2] Cycloaddition Reactions of Diarylacetylenes: Synthesis of Benzo[b]fluorene Derivatives via Cyclic Allenes

(Equation Presented) 2-Propynyldiarylacetylenes undergo thermal intramolecular [4 + 2] cycloaddition to give benzo[b]fluorene derivatives in good yields. The hybridization of the tether connecting the reacting alkynes has a pronounced effect on the course