反应 #2314306

反应方程式

eugenol

eugenol

acetic anhydride

→

3-(4-acetoxy-3-methoxyphenyl)propene

收率 100.0%

溶剂

acetic acid

反应条件

后处理

1. 1
   其他Into a three-neck, 5000 ml round bottom flask equipped with an addition funnel, mechanical stirrer, condenser
2. 2
   温度thermometer, heating mantle and nitrogen inserting tube
3. 3
   workup.STIRRINGstirred for 3 hours
4. 4
   其他was stripped from the reaction mixture at 36° C.

实验过程

Into a three-neck, 5000 ml round bottom flask equipped with an addition funnel, mechanical stirrer, condenser, thermometer, heating mantle and nitrogen inserting tube is charged eugenol (2,519 grams, 15.3 moles). The eugenol was heated to 75° C. The acetic anhydride (1554 grams, 15.2 moles) was added with stirring over a one-hour period. The reaction mixture was then heated to 140° C. and stirred for 3 hours. The acetic acid by-product from the acylation reaction was stripped from the reaction mixture at 36° C. and 0.15 mm Hg pressure. The reaction produced 3-(4-acetoxy-3-methoxyphenyl)propene (3134 grams, 99.3 percent yield.)

来源