反应详情

1,4-Butanediol (50.00 g) was dissolved in dry toluene (60 ml), para-choloromethylstyrene (15.62 g; 0.1 mol) was then added with stirring. A catalytic quantity of 18-crown-6 (0.3 g) was then added. The flask was stoppered, stirred at room temperature for 18 hours and for a further 4 hours at 45-60°. The resulting solution was then poured in to water (500 ml) and extracted with dichloromethane (3×75 ml). The combined extracts were dried (MgSO4) and evaporated (20°/21 mm) to give a yellow oil, which was distilled to give a yellow oil (14.33 g; 69.6%).b.pt. 152-157°/1 mbar.

1. additionpara-choloromethylstyrene (15.62 g; 0.1 mol) was then added
2. stirringstirred at room temperature for 18 hours and for a further 4 hours at 45-60°
3. extractionextracted with dichloromethane (3×75 ml)
4. dry with materialThe combined extracts were dried (MgSO4)
5. customevaporated (20°/21 mm)
6. customto give a yellow oil, which
7. distillationwas distilled
8. customto give a yellow oil (14.33 g; 69.6%)