Chlorine → 4-Chlorophthalic anhydride
Reaktionsgleichung
[Cl:1][C:2]1[CH2:3][CH:4]2[C:9](=[O:10])[O:8][C:6](=[O:7])[CH:5]2[CH2:11][CH:12]=1.ClCl>>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[O:10])[O:8][C:6](=[O:7])[C:5]2=[CH:11][CH:12]=1Komponenten
3
Reaktionsbedingungen
- Temperatur
- 200 °C
Versuchsvorschrift
To a three necked 50 ml round bottom flask, fitted with a stirrer, gas inlet tube and connected to a trap system, for recovery of products, was placed 20.38 g of 4-chloro-1,2,3,6-tetrahydrophthalic anhydride. The reactor was heated to 200° C. and illuminated with a 15 watt black, blue bulb (GE F15T8-BLB) with a transmission range of 300-400 nm and a maximum at 375 nm. An excess flow of chlorine was begun and the reaction continued for 8 hours. The reactor was purged with nitrogen and sampled. A 12% yield of 4-chlorophthalic anhydride was obtained.