AgNO3-catalyzed decarboxylative cross-coupling reaction: an approach to coenzyme Q was written by Luo, Wan-Yue;Lu, Bin;Qiu, Yong-Fu;Zhou, Rong-Ye;He, Yong-Jing;Wang, Jin. And the article was included in New Journal of Chemistry in 2020.Quality Control of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione This article mentions the following:
An efficient and general method for the synthesis of coenzyme Q compounds through the activation of the 1,4-benzoquinone Csp2-H bond was developed. This C-C bond formation reaction proceeds readily in an open flask by the direct cross-coupling reaction of coenzyme Q0 with com. available aliphatic carboxylic acids utilizing AgNO3 as a catalyst and K2S2O8 as an oxidant in aqueous solution This radical reaction is operationally simple and amenable to gram-scale synthesis. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Quality Control of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione).
2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Quality Control of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem