Reacción #1365695

Ecuación de reacción

terephthaloyl chloride

water

terephthaloyl chloride

4,4′-diamino-2,2′-biphenyldisulfonic acid

sodium carbonate

→

desired polymer

Rendimiento 89.5%

4,4′-diamino-2,2′-biphenyldisulfonic Acid benzene-1,4-dicarbonyl Chloride

Rendimiento 89.5%

Disolventes

chloroform

chloroform

chloroform

chloroform

ethanol

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroInto a 1-L fluted round-bottom flask equipped with a mechanical stirring shaft
2. 2
   workup.DISSOLUTIONis dissolved
3. 3
   Otrois obtained
4. 4
   Otrois prepared
5. 5
   Otrois also prepared
6. 6
   workup.STIRRINGThe reaction flask is stirred at high speed (800-1000 rpm)
7. 7
   workup.STIRRINGThe mixture is stirred for five minutes
8. 8
   Otroresulting in an emulsion
9. 9
   workup.ADDITIONadded to the flask as quickly as possible
10. 10
    workup.STIRRINGThe reaction mixture is stirred at high speed at room temperature for 2-3 hours
11. 11
    workup.ADDITIONAt the end of this period the thickened gel-like solution is poured into large flask
12. 12
    FiltraciónThe resulting solid is filtered
13. 13
    Otrodried in a vacuum oven

Procedimiento

Into a 1-L fluted round-bottom flask equipped with a mechanical stirring shaft, is placed 250 mL of deionized water and 7.95 g of sodium carbonate. The mixture is stirred until the carbonate salt is dissolved. Then, 7.64 g of 4,4′-diamino-2,2′-biphenyldisulfonic acid (DABS, 85%) is added and stirring is continued until a homogeneous solution is obtained. A solution containing 2.00 g of PEG 400 distearate surfactant dissolved in 100 mL of purified chloroform is prepared and set aside. Another solution containing 3.79 g of terephthaloyl chloride and 0.05 g of 1,5-benzenetricarbonyl trichloride dissolved in 100 mL of purified chloroform is also prepared. The reaction flask is stirred at high speed (800-1000 rpm), and the chloroform/surfactant solution is added quickly to the flask. The mixture is stirred for five minutes, resulting in an emulsion. Then, the chloroform solution containing the terephthaloyl chloride added to the flask as quickly as possible. The reaction mixture is stirred at high speed at room temperature for 2-3 hours. At the end of this period the thickened gel-like solution is poured into large flask containing 300 mL ethanol/900 mL acetone. The resulting solid is filtered and dried in a vacuum oven to provide 9.15 grams of the desired polymer as a fluff, light purple solid.

Fuente