54458-84-3

Upstream product

• 67-56-1 methanol 
• 610-50-4 1-hydroxyanthracene 
• 82-34-8 1-nitroanthraquinone 
• 82-45-1 1-amino-9,10-anthracenedione 
• 610-49-1 1-aminoanthracene 
• 129-43-1 1-hydroxyanthraquinone 
• 82-39-3 1-methoxyanthracene-9,10-dione 
• 2398-37-0 3-methoxyphenyl bromide 
• 35447-99-5 1,2-dihydrobenzocyclobuten-1-ol 
• 7651-80-1 1-fluoroanthracene 
• 82-49-5 1-anthraquinonesulfonic acid 
• 15100-52-4 anthracene-sulfonic acid 

Downstream Products

• 1629-56-7 1-acetoxy-9,10-anthraquinone 
• 610-50-4 1-hydroxyanthracene 
• 655-04-9 1,2-anthraquinone 

Relevant academic research and scientific papers

Pyrazine compound and application thereof

The invention discloses a pyrazine compound and application thereof. In particular, the present invention provides a compound represented by the formula (I), wherein the extractant composed of the compound has a high extraction rate for lithium ions, and the organic phase is easy to enrich lithium-7 isotopes, so as to realize the extraction and separation of lithium isotopes.

Method for preparing alkyloxy aromatic compound from fluoroaromatic compound

The invention discloses a method for preparing an alkyloxy aromatic compound from a fluoroaromatic compound. The alkyloxy aromatic compound is highly-efficiently prepared through a reaction of the fluoroaromatic compound, a strong alkali, dimethyl sulfoxide and alcohol under certain conditions. The method has the advantages of no metal catalyst, mild and controllable reaction, simple process, good universality, and suitableness for large-scale industrial production.

A New Convenient Synthesis of Alkoxyanthracenes from Alkoxy-9,10- anthraquinones

Methoxy-9,10-anthraquinones with mono-, di- and tetraether groups at different positions 1a-h can be directly reduced to the corresponding methoxyanthracenes 3a-h in moderate to good yields by zinc in refluxing acetic acid. Under similar conditions, ethyl 1′-anthracenoxyacetate (3i) with the ester group unaffected and 1,8-oxybis(ethyleneoxyethyleneoxy)anthracene (5) were also conveniently synthesized in 65 and 70% yields, respectively.

A Rapid, Convergent, and Regioselective Synthesis of Anthracenes

Anthracenes are obtained in moderate to good yield by the simultaneous treatment of benzocyclobutenols and halobenzenes with LTMP in tetrahydropyran.In the key step of this one-pot process, o-toluoyl anion intermediates from the known ring-opening of benzocyclobutenoxides add to halobenzene derived arynes.Methoxy-substituted benzocyclobutenols which are readily made regiospecifically by known methods also react regiospecifically with the single benzyne generated from either a 2- or 3-haloanisole.For example, the only trimethoxyanthracene isolated (48percent yield) from the reaction of 6-methoxybenzocyclobutenol (8) with 5-chloro-1,3-dimethoxybenzene is the 1,3,8-isomer 20.When 1,2-dihydrocyclobutaphenanthren-1-ol (14) and/or halonaphthalenes are the reactants, benzannulated anthracenes are formed; e.g., tribenzanthracene in 68percent yield from 14 and bromonaphthalene.In another extension, pentaphene (31) was made in one pot from o-dichlorobenzene.

Process for the selective production of dihydroxybenzenes

The known nuclear hydroxylation of phenol or substituted phenols or phenol ethers with organic solutions of hydrogen peroxide in the presence of a catalyst is carried out in improved manner by employing both (1) a special, practically water free solution of hydrogen peroxide in an organic solvent which forms an azeotrope with water, which azeotrope boils below the boiling point of hydrogen peroxide, and (2) selenium dioxide as a catalyst. Through this, the nuclear hydroxylation is substantially simpler than previously. Besides, for the first time, it is possible to control the ortho to para ratio or the two ortho ratios to each other.