ChemicalBook CAS DataBase List ANTHRAQUINONE-2-CARBOXYLIC ACID

ANTHRAQUINONE-2-CARBOXYLIC ACID synthesis

10synthesis methods

Product Name:ANTHRAQUINONE-2-CARBOXYLIC ACID
CAS Number:117-78-2
Molecular formula:C15H8O4
Molecular Weight:252.22

Anthraquinone-2-carboxylic acid is prepared from 4'-methylbenzophenone- 2-carboxylic acid by oxidation with potassium permanganate and ring closure with 5 % oleum.

84-51-5 Synthesis

84-51-5
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$7.00/25g

117-78-2
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$21.00/1g

Yield:117-78-2 95.3%

Reaction Conditions:

with dihydrogen peroxide;titanium(IV) oxide in acetonitrile at 25; for 5 h;Reagent/catalyst;Solvent;Temperature;

Steps:

3
5 g of 2-ethylanthraquinone was dissolved in 25 g of acetonitrile solvent, 0.25 g of the photocatalyst titanium dioxide (average particle size:20 nm) and 0.5 g of hydrogen peroxide were added thereto, followed by stirring for 5 hours of photocatalytic reaction. The photocatalytic reaction temperature was 25 ° C, 2-ethylanthraquinone is photocatalytic oxidation.The reaction was terminated and the catalyst was filtered off. The filtrate was evaporated under reduced pressure to remove the solvent and crystallized again to giveanthraquinone-2-carboxylic acid in a yield of 95.3%.

References:

Tianjin University;Zhang Tianyong;Li Bin CN105152924, 2017, B Location in patent:Paragraph 0018-0024; 0025-0031; 0032-0038; 0039-0045

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84-54-8 Synthesis