Reacción #4243

Ecuación de reacción

4-allyl-2,6-dimethylphenyl glycidyl ether

formic acid

hydrogen peroxide

→

4-(2,3-epoxypropyl)-2,6-dimethylphenyl glycidyl ether

Rendimiento 85.5%

Disolventes

chloroform

chloroform

Condiciones de reacción

Tratamiento posterior

1. 1
   Otroequipped with thermometer, stirrer, cooler and drip funnel
2. 2
   Otrois held at this temperature overnight
3. 3
   Lavadothe resultant solution is washed twice with 3% NaOH solution until neutral,
4. 4
   Secadodried over sodium sulfate
5. 5
   Filtraciónfiltered
6. 6
   ConcentraciónThe filtrate is concentrated

Procedimiento

A 350 ml sulfurating flask equipped with thermometer, stirrer, cooler and drip funnel is charged with 21.8 g (0.10 mole) of 4-allyl-2,6-dimethylphenyl glycidyl ether, 10.9 g (0.24 mole) of formic acid and 135 ml of chloroform. At room temperature, 23.2 g (0.47 mole) of hydrogen peroxide are then added dropise over 4 hours. The reaction miture is held at this temperature overnight. It is subsequently taken up in chloroform and the resultant solution is washed twice with 3% NaOH solution until neutral, made peroxide-free with sodium sulfite, dried over sodium sulfate and filtered. The filtrate is concentrated, affording 20.03 g (80.50% of theory) of 4-(2,3-epoxypropyl)-2,6-dimethylphenyl glycidyl ether in the form of a low viscous resin; epoxide content 7.7 equivalents/kg (90.11% of theory).

Fuente