反应详情

23.8 g (0.06 mol) of 2-(2,4-dihydroxyphenyl)-4,6-bis-(2,4-dimethylphenyl)-1,3,5-triazine (prepared as described in U.S. Pat. No. 3,244,708 Example 16) are suspended in 300 ml of xylene. 12.1 g (0.09 mol) of 97% butyl glycidyl ether and 0.75 g (0.006 mol) of dimethylbenzylamine are added to this suspension, and the mixture is heated to reflux temperature. After a reaction time of 5 hours the clear, brownish solution is cooled and clarified by filtration through 100 g of silica gel. The yellow solution is evaporated and the residue is recrystallized from hexane/toluene. This gives 27.3 g of pale yellow crystals of 2-[2-hydroxy-4(3-butoxy-2-hydroxypropyloxy)-phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin (=86% yield). Melting point: 80-83° C. (Compound 1).

1. temperaturethe mixture is heated
2. temperatureto reflux temperature
3. temperatureAfter a reaction time of 5 hours the clear, brownish solution is cooled
4. filtrationclarified by filtration through 100 g of silica gel
5. customThe yellow solution is evaporated
6. customthe residue is recrystallized from hexane/toluene