反应详情

温度

0 °C

4-(Chloromethyl)benzyl alcohol (4.68 g), methyl 3-(4-hydroxyphenyl)propanoate (5.40 g) and triphenylphosphine (9.20 g) were dissolved in a mixed solvent of toluene (60 mL)-tetrahydrofuran (30 mL), cooled to 0° C. and diethyl azodicarboxylate (40% toluene solution, 15.2 g) was added dropwise with stirring. After completion of the dropwise addition, the reaction mixture was allowed to warm to room temperature and further stirred for 1 hr. The reaction mixture was concentrated and the residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:19-1:1 in volume ratio) to give the title compound (5.19 g, yield 54%) as colorless crystals.

1. additionAfter completion of the dropwise addition
2. temperatureto warm to room temperature
3. stirringfurther stirred for 1 hr
4. concentrationThe reaction mixture was concentrated
5. customthe residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:19-1:1 in volume ratio)