반응 #2030

반응 방정식

potassium thiocyanate

acetone

toluene

→

styrene

4-thiocyanatomethylstyrene

용매

—

solvent

DMF

반응 조건

후처리

1. 1
   기타1.5 g of the terpolymer formed in Step II
2. 2
   기타taken in a 500 mL flask
3. 3
   온도The entire contents of the flask was then heated
4. 4
   온도to reflux for about 30 hours
5. 5
   기타The solvents were evaporated under vacuo
6. 6
   기타the residual solids were precipitated from water
7. 7
   세척The precipitate was washed with methanol
8. 8
   기타dried
9. 9
   기타to yield a white powder of the terpolymer (0.9 g)

실험 절차

The desired terpolymer of styrene, 4-thiocyanatomethylstyrene, and vinyl benzyl polyethylene glycol was synthesized from the terpolymer of Step II as follows: 1.5 g of the terpolymer formed in Step II was mixed with 350 mL of toluene taken in a 500 mL flask and the contents stirred. To this mixture was added 1.2 g of potassium thiocyanate dissolved in 115 mL of a solvent mixture of DMF and acetone (100/15, v/v). The entire contents of the flask was then heated and allowed to reflux for about 30 hours. The contents were then allowed to cool to room temperature at which time slightly turbid mixture became homogeneous. The solvents were evaporated under vacuo and the residual solids were precipitated from water. The precipitate was washed with methanol and dried to yield a white powder of the terpolymer (0.9 g). The structure of the produced terpolymer was verified by 1H and 13C NMR, and IR spectroscopy.

출처