Réaction #4245

Équation de réaction

4-allyl-2,6-diphenylphenyl glycidyl ether

peracetic acid

→

yellow resin

Rendement 86.9%

4-(2,3-Epoxypropyl)- 2,6-diphenylphenyl glycidyl ether

Rendement 86.9%

Solvants

toluene

sodium acetate

toluene

Conditions de réaction

Traitement

1. 1
   Autreequipped with stirrer
2. 2
   workup.ADDITIONWhen the dropwise addition
3. 3
   Autrethe resultant aqueous phase is separated
4. 4
   Lavagethe organic phase is washed with two 150 ml portions of NaHCO3 (5%)
5. 5
   Lavagewashed with 150 ml of water
6. 6
   SéchageThe organic phase is dried over Na2SO4
7. 7
   Filtrationfiltered
8. 8
   ConcentrationThe filtrate is concentrated

Mode opératoire

A 100 ml sulfurating flask equipped with stirrer, cooler, thermometer and drip funnel is charged with 13.7 g (0.04 mole) of 4-allyl-2,6-diphenylphenyl glycidyl ether in 20 ml of toluene and 0.7 g of sodium acetate. Over 2 hours, 9.13 g (0.048 mole) of 40% peracetic acid are added at a temperature in the range from 30° to 50° C. When the dropwise addition is complete, the reaction mixture is stirred for a further 7 hours. When the reaction is complete, the reaction mixture is diluted with 700 ml of toluene, the resultant aqueous phase is separated and the organic phase is washed with two 150 ml portions of NaHCO3 (5%) and then washed with 150 ml of water. The organic phase is dried over Na2SO4 and made peroxide-free with Na2SO3 and filtered. The filtrate is concentrated, affording 12.46 g (86.5%) of a yellow resin with an epoxide content of 4.99 eq/kg (89.5%) and a viscosity of 6850 mPas/40° C.

Source