Potassium Carbonate → 2-(1-Acetyl-2,2,6,6-tetramethylpiperidin-4-oxy)-4-(1-hydroxyl-2,2,6,6-tetramethylpiperidin-4-oxy)-6-(2,2,6,6-tetramethylpiperidin-1-yl)-1,3,5-triazine

関与物質

反応手順

4 g of 2-chloro-4-(1-hydroxyl-2,2,6,6-tetramethylpiperidin-4-oxy)-6-(2,2,6,6-tetramethylpiperidin-1-yl)-1,3,5-triazine (product from Example 36) are dissolved in 30 ml of toluene, after which 2.6 g of pulverized KOH, 1 g of potassium carbonate and 0.15 g of tetrabutylammonium hydrogen sulfate are added. 1.95 g of 1-acetyl-2,2,6,6-tetramethyl-4-hydroxypiperidine are added with stirring. The mixture is warmed to 60° for 17 hours. After cooling, 30 ml of water are added. The phases are separated. The organic phase is dried over Na2SO4 and evaporated. After recrystalling from methylene chloride/hexane, dissolving the product in hexane/acetic acid and chromatographic purification on an SiO2 column, the above product, which melts at 175°-176°, is obtained.

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