反应详情

β-Nitrocinnamyl alcohol (5.4 g, 0.03 mol) and one equivalent of triethylamine (3.03 g, 0.03 mol) were dissolved in 100 M of toluene. The solution was cooled in an ice bath and perfluorooctanoyl chloride (2.6 g, 0.03 mol) was added dropwise with stirring. The reaction was stirred an addtional two hours and diluted with ether. The reaction was extracted with water and the organic layer was dried over anhydrous magnesium sulfate and evaporated in vacuo. The oily product was crystallized from petroleum ether to give yellow prisms, mp 79-81°, IR 1785, 1655, 1535, 1325, and 1200 cm-1. A solution of the material in 95% ethanol showed an absorption of λmax at 302 nm, epsilon=10,800 which rapidly decreased on exposure to the GE H3T7 source. This loss of the 302 nm absorption was accompanied by a decrease in the pH (increased acidity) of the solution as as indicated by methyl red pH indicator.

1. temperatureThe solution was cooled in an ice bath
2. stirringThe reaction was stirred an addtional two hours
3. extractionThe reaction was extracted with water
4. dry with materialthe organic layer was dried over anhydrous magnesium sulfate
5. customevaporated in vacuo
6. customThe oily product was crystallized from petroleum ether
7. customto give yellow prisms, mp 79-81°, IR 1785, 1655, 1535, 1325, and 1200 cm-1
8. customan absorption of λmax at 302 nm, epsilon=10,800 which
9. customThis loss of the 302 nm absorption
10. temperaturewas accompanied by a decrease in the pH (increased acidity) of the solution as