106800-35-5

Upstream product

• 832-87-1 2-(2,4,6-trimethoxyphenyl)ethan-1-ol 
• 27214-71-7 cyanidin 3-O-glucopyranoside chloride 
• 1577235-24-5 C₂₀H₂₂O₈ 
• 621-23-8 1,2,3-trimethoxybenzene 

Relevant academic research and scientific papers

Novel oxidation products of cyanidin 3-O-glucoside with 2,2′-azobis-(2,4-dimethyl)valeronitrile and evaluation of anthocyanin content and its oxidation in black rice

The radical oxidation mechanism of anthocyanin derivatives was investigated by the reaction of cyanidin 3-O-glucoside in the presence of radical initiator 2,2′-azobis-(2,4-dimethyl)valeronitrile (AMVN) in EtOH and aqueous CH 3CN. Six different oxidation products were isolated, depending on the solvent employed. These products were identified using NMR spectroscopy and multistep derivatisation reactions. Of the products obtained, two novel oxidised anthocyanin derivatives were isolated from black rice under prolonged storage. A radical reaction mechanism is proposed on the basis of these reaction products. Quantification of oxidised anthocyanins in black rice is demonstrated as a method to verify freshness of the rice.

Hydroxyl-Directed Regioselective Monodemethylation of Polymethoxyarenes

Methoxyl groups ortho to β-hydroxyethyl or γ-hydroxypropyl substituents in polymethoxybenzene derivatives were regioselectively demethylated with sodium thioethoxide in N,N-dimethylformamide.Methoxydihydrobenzofurans or methoxychromans were produced by cyclization of the monodemethylated β-hydroxyethyl or γ-hydroxypropyl derivatives, respectively.