反应详情

A mixture of 11.0 g of 4-hydroxy-2,2,6,6-tetramethylpiperidine and 7.0 g of bis(2,3-epoxypropyl)1,2-cyclohexanedicarboxylate was heated, with stirring, at 170°-180° C. for 5 hours. After completion of the reaction, benzene was added to the reaction mixture and then the benzene solution was washed with water and dried over anhydrous potassium carbonate. The solvent was evaporated under reduced pressure from the benzene solution, leaving a residue, which was then purified by column chromatography through silica gel eluted with a 16:2:1:1 by volume mixture of ethyl acetate, benzene, ethanol and triethylamine, giving the desired Compound No. 90 as a vitreous solid. The Compound had an Rf value of 0.32 on thin-layer chromatography on silica gel developed with a 16:2:3:1 by volume mixture of ethyl acetate, benzene, ethanol and triethylamine.

1. temperaturewas heated
2. additionwas added to the reaction mixture
3. washthe benzene solution was washed with water
4. dry with materialdried over anhydrous potassium carbonate
5. customThe solvent was evaporated under reduced pressure from the benzene solution
6. customleaving a residue, which
7. customwas then purified by column chromatography through silica gel
8. washeluted with a 16:2:1:1 by volume mixture of ethyl acetate, benzene, ethanol and triethylamine