反应详情

In 150 ml of toluene was dissolved 20 g of 2-acetylamino-5-hexadecyloxyphenol obtained in Preparation Example 3, and it was then heated at 80°-90° C. together with 8 g of Amberlyst 15 (produced by Rohm & Haas Co.). To this mixture was added dropwise 30 ml of α-methylstyrene, and the resulting mixture was heated as it is for about 7 hours. After the reaction was completed, Amberlyst 15 was removed by filtration and the filtrate was condensed. After the addition of methanol, the condensed filtrate was cooled with ice whereupon the desired product precipitated. The product was collected by filtration and washed well with methanol. Yield: 6.6 g.

1. customobtained in Preparation Example 3, and it
2. temperaturewas then heated at 80°-90° C. together with 8 g of Amberlyst 15 (produced by Rohm & Haas Co.)
3. temperaturethe resulting mixture was heated as it
4. customAmberlyst 15 was removed by filtration
5. customcondensed