Potassium Carbonate → 88216-53-9

Participants

Reaction Steps

22.3 g of 4'-cyano-4-hydroxyazobenzene and 14 g of dry potassium carbonate are dissolved in 100 ml of absolute acetone, a pinch of KI is added, and 15.3 g of 6-chlorhexan-1-ol are then added dropwise at the boil. The reaction mixture is refluxed for 6 days. The precipitated potassium chloride is filtered off under suction from the warm mixture, and the solution is evaporated down. 200 ml of CHCl3 are added to the dye obtained, and the chloroform solution is filtered off drom undissolved material, extracted by shaking four times with H2O and evaporated down. The crude product is recrystallized from 300 ml of acetone.

Provenance & Evidence