HCID 22035097, compound → HCID 21708822, compound

Participants

Reaction Steps

Ten grams (30.9 mmols) of crude 2-(3′-N,N-diethylaminomethyl-2′-hydroxy-5′-methylphenyl)-2H-benzotriazole obtained following the procedures of Synthesis Example 1 and 11.1 g (31.0 mmols) of 5-chloro-2-(2′-hydroxy-5′-methacryloyloxyethylphenyl)-2H-benzotriazole were dissolved in 64 ml of xylene, and 1.5 ml of a 28% sodium methylate•methanol solution were added thereto. The mixture was then refluxed in a nitrogen stream for 10 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature. Yellow crystals precipitated at this stage were separated through filtration, and recrystallized from chloroform to obtain 13.1 g of 6-(4-chloro-2H-benzotriazol-2-yl)-4-methacryloyloxyethyl-2-[3′-(2H-benzotriazol-2-yl)-2′-hydroxy-5′-methylphenyl]methylphenol (hereinafter abbreviated as “RUVA-2” as white crystals (yield 70.3%, purity 98.8%).

Provenance & Evidence