反应详情

7.65 g (23.45 mmol) 4-pentoxyphenyl (2E)-3-{4-[(ethoxycarbonyl)oxy]phenyl}acrylate, 70 ml pyridine and 40 ml acetone were mixed. A solution of 12.5 ml ammonium hydroxide 25% in water and 30 ml acetone were added dropwise. The reaction mixture was subsequently allowed to react for 18 h at 25° C. and acidified to pH=1 with hydrochloric acid 7 N. The product was filtered off, washed with water and dried under vacuum to give 7.35 g 4-pentoxyphenyl (2E)-3-{4-hydroxyphenyl}acrylate as colourless powder.

1. customto react for 18 h at 25° C.
2. filtrationThe product was filtered off
3. washwashed with water
4. customdried under vacuum