Reaktion #831117

Reaktionsgleichung

poly(p-hydroxystyrene)

tert-butyl monochloroacetate

K2CO3

→

tert-butyl p-vinylphenoxyacetate p-hydroxystyrene

Lösungsmittel

acetone

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeobtained in the same manner
2. 2
   Sonstigewas reacted
3. 3
   Temperaturunder reflux
4. 4
   TemperaturAfter cooling
5. 5
   Filtrationthe precipitate was filtered off
6. 6
   workup.ADDITIONthe filtrate was poured into H2O (1 l)
7. 7
   Sonstigewas precipitated
8. 8
   FiltrationThe precipitate was filtered
9. 9
   Waschenwashed with H2O
10. 10
    Sonstigedried under reduced pressure

Vorschrift

A suspension of poly(p-hydroxystyrene) (4.0 g) obtained in the same manner as described in Reference Example 1, (2), tert-butyl monochloroacetate (3.0 g) and anhydrous K2CO3 (2.8 g) in acetone (35 ml) was reacted with stirring for 2 hours under reflux. After cooling, the precipitate was filtered off, the filtrate was poured into H2O (1 l) and was precipitated. The precipitate was filtered, washed with H2O and dried under reduced pressure to give 5.2 g of poly(tert-butyl p-vinylphenoxyacetate/p-hydroxystyrene) as white powder having Mw 11000 (GPC with polystyrene calibration). The polymer was found to have tert-butyl p-vinylphenoxyacetate unit and p-hydroxystyrene unit in a molar ratio of ca. 1:1 based on 1HNMR.

Quelle