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P-Benzoquinone CAS 106-51-4 Benzoquinone p-Benzoquinone P-quinone PBQ Quinone 

Payment Terms: T/T,L/C,WU 
Place of Origin: Shandong, China (Mainland) 
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Product Detail

Means of Transport: Ocean,Land,Air
Packing: According to the request of...
Brand Name: MOSINTER
Density: 1.256g/cm3
Boiling point: 213.3°C at 760 mmHg
Water solubility: 10 g/L (25℃)
Production Capacity: 3000 Ton/Year
Delivery Date: within 7 days
CAS No.: 106-51-4
Melting Point: 112-116℃
Flashing point: 76.4°C
Vapour pressure: 0.166mmHg at 25°C

An acidic potassium iodide solution reduces a solution of benzoquinone to hydroquinone, which can be reoxidized back to the quinone with a solution of

P-Benzoquinone(CAS: 106-51-4)



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1,4-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula C6H4O2. In a pure state, it forms bright-yellow crystals with a characteristic irritating odor, resembling that of chlorine, bleach, and hot plastic. This six-membered ring compound is the oxidized derivative of 1,4-hydroquinone. The molecule is multifunctional: it exhibits properties of a ketone, forming an oxime; an oxidant, forming the dihydroxy derivative; and an alkene, undergoing addition reactions, especially those typical for α,β-unsaturated ketones. 1,4-Benzoquinone is sensitive toward both strong mineral acids and alkali, which cause condensation and decomposition of the compound.


Quinone is mainly used as a precursor to hydroquinone, which is used in photography and rubber manufacture as a reducing agent and antioxidant.

Organic synthesis

It is used as a hydrogen acceptor and oxidant in organic synthesis. 1,4-Benzoquinone serves as a dehydrogenationreagent. It is also used as a dienophile in Diels Alder reactions.

Benzoquinone reacts with acetic anhydride and sulfuric acid to give the triacetate of hydroxyquinol. This reaction is called the Thiele reaction after Johannes Thiele, who first described it in 1898. An application is found in total synthesis:

Benzoquinone is also used to suppress double-bond migration during olefin metathesis reactions.

An acidic potassium iodide solution reduces a solution of benzoquinone to hydroquinone, which can be reoxidized back to the quinone with a solution of silver nitrate.

Due to its ability to function as an oxidizer, 1,4-benzoquinone can be found in methods using the Wacker-Tsuji oxidation, wherein a palladium salt functions to catalytically oxidize an alkene to its corresponding ketone. This reaction is typically carried out using pressurized oxygen as the oxidizer, and can be done instead with methyl nitrite in solution, but benzoquinone can sometimes be preferential, as it does not require the handling of gases, making it easy to measure out by mass.

1,4-Benzoquinone is used in the synthesis of Bromadol and related analogs. It is also used as a reagent in the "Wacker oxidation" reaction. An interesting analog of fentanyl was also made that used the 1,4-Benzoquinone as the starting material. Another analog based on tramadol also appeared in the patent literature, with 4,4-hydroxy(β-phenethyl) substitution pattern. All the drug molecules are made only after the two olefinic double bonds have been reduced.

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Business Type:Manufacturer, Trading Company
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

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