Synthesis of Piperic Acid

To a reflux apparatus add 4 g of piperine, 45 mL of methanol. 5 mL of water and 9 g of potassium hydroxide with stirring. Reflux for 24 h, cool down, filter and wash with some methanol. Dry in the open air. Then combine the product with 80ml of water and 10 mL of conc. HCl with stirring, cool down and filter. Recrystallize in hot ethanol.



The refluxed mixture, the mixture needs to be filtered and washed


Addition of the HCl


Filtration of the product


Samples of the pure product under normal and UV-light

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